Parasound Stereo Amplifier P SP 1500 User Manual

O W N E R ' S  
M A N U A L  
P/SP-1500 AV Processor/Preamplifier  
 
P/SP-1500 Owner's Manual  
3
Setting Up Your Home Theater System  
Refer to Diagram on Page 4  
Speaker Placement  
Proper speaker placement is essential for optimum performance of your home theater system. Improper  
placement of speakers can produce an unnatural sound and greatly diminish the home theater  
experience. Here are some basic guidelines for speaker placement based upon idealized conditions.  
However, it may be necessary to make compromises for furniture, windows, doorways, and other  
aesthetic reasons.  
Front Speakers  
Try to locate your front left and right speakers an equal distance from your television monitor or  
projection screen. Ideally, your viewing/listening position should be at the point of an equilateral  
triangle with the left and right speakers at the other points.  
Center Speaker  
The center speaker’s main function is to reproduce dialog and to join the sonic image from the speakers  
with the visual image on the screen. It is best to place your center speaker directly above or below the  
television monitor for a more realistic effect. The distance from your listening position to the center  
channel speaker should be the same distance as from your listening position to the left and right  
speakers. This necessitates placing the center speaker somewhat behind the left and right speakers. This  
placement assures the sound from all three front speakers will arrive at your listening position at  
precisely the same time. If you are using a direct view television with a picture tube, we strongly  
recommend a shielded center channel speaker if you intend to locate it near the monitor. The magnetic  
field of an unshielded speaker will cause an extreme discoloration of most direct view TV screens. If  
you are placing your front speakers behind a high-quality perforated projection screen, locate your center  
speaker at the same height as your left and right speakers.  
Conventional Surround Speakers  
Surround speaker placement is a little more flexible than the front speakers. In the Dolby Pro Logic and  
even Dolby Digital (AC-3) mode surround speakers are intended to create a more diffuse ambient effect  
rather than a precise sonic image. To avoid drawing your attention away from the action on the screen,  
you should not be able to localize the sound coming from your surround speakers. Therefore, you  
should try to avoid pointing the surround speakers directly toward your listening position and place them  
behind you and at least three feet above your ear level when you are seated. You may even want to try  
aiming them at the wall or ceiling for a greater ratio of reflected to direct sound to help reduce  
localization. Experimentation with surround speaker placement is often required to yield optimum  
results.  
THX Dipole Surround Speakers  
THX certified dipole surround speakers are designed for superior surround channel performance. If you  
are using THX Home Cinema front and rear firing dipole surround speakers, locate them at least two  
feet above and to the sides of your listening area. This places you in the “null” of the dipole speakers to  
minimize localization of the surround speakers.  
Subwoofer  
The best way to position your subwoofer is to first hook it up and place it close to your listening  
position. Next, stand in various spots within your room and find the location that will give you the  
strongest and most balanced bass without excessive boominess. Once you have found the optimum  
location, simply relocate the subwoofer to that spot.  
 
4
P/SP-1500 Owner's Manual  
L. Surr  
R. Surr  
Typical home theater setup using THX dipole surround speakers.  
Note that all three front speakers are the same distance to the listening area.  
L. Surr  
R. Surr  
Typical home theater setup using conventional surround speakers  
Note that all three front speakers are the same distance to the listening area  
 
P/SP-1500 Owner's Manual  
5
Making Connections to Your P/SP-1500  
Refer to Diagram on Page 6  
Input Connections  
Before making any connections to your P/SP-1500, be sure to turn off the power to your amplifiers.  
Also, make sure there is no strain or tension on any connections that could make them pull loose.  
Audio/Video Input Connections  
Your P/SP-1500 comes equipped with four audio/video line inputs, three audio-only inputs, plus a six  
channel discrete input for an external digital surround adaptor. All seven inputs are compatible with any  
typical analog line level source such as a compact disc player, digital to analog converter, tuner, tape  
deck, or the audio output of a laser disc player or video cassette recorder. The four audio/video inputs  
also have switching capability for both NTSC composite video or S-video. You may use just the audio  
jacks of any of the audio/video inputs if your system needs to accommodate more audio than video  
source components.  
Video Inputs 1-3 (Playback Only)  
Connect the audio and video outputs of any audio/video source such as a laser disc player, video cassette  
recorder, satellite receivers, etc. to these inputs. This input has accompanying S-video or composite  
video connections, but it does not provide an audio/video record output. If your video cassette recorder  
has only a mono output you can use either the left or right audio input jack of your P/SP-1500.  
However, the internal circuitry will not produce surround effects from mono signals.  
Video Input 4 (Record and Playback)  
Use this input for to the video cassette recorder you also intend to use for recording. The Video 4 input  
has accompanying composite and S-video switching and full audio/video recording output capability.  
Its record input accepts signals from any of the other six line inputs. Connect the left and right audio  
output connectors from the video cassette recorder you will use for recording to the Video 4 Play  
connectors of the P/SP-1500. Next, connect the left and right audio input connectors of the video  
cassette recorder you will use for recording to the Video 4 Rec connectors of the P/SP-1500.  
Audio 1-3 (Audio Only)  
Connect a line level source to these audio-only inputs such as a compact disc player, digital to analog  
converter, tuner, or tape deck.  
S-Video and Composite Video Connections  
Your P/SP-1500 has both composite RCA and S-video circuits with separate video amplifiers for each of  
the four audio/video inputs. If you connect a video signal to one of the RCA composite input  
connectors, the signal will only be available through the RCA composite Monitor and Video 4 Record  
output connectors. Likewise, if you connect a video signal to the S-video input, the video signal will  
only be available through the S-video Monitor and Video 4 Record output connections.  
Connecting the Television Monitor or Video Projector  
Connect the RCA composite or S-video Monitor output connector of your P/SP-1500 to the input  
connector of your monitor or projector. If you have a monitor with a separate S-video and composite  
inputs, connect the P/SP-1500 S-video output to one of the monitor’s inputs (such as External 1) and the  
composite output to another input (such as External 2). This way, you can view both composite or S-  
video sources by selecting External 1 or External 2 on your video monitor or projector.  
 
CD  
Player  
Audio Cassette Deck  
Video Cassette Recorder  
TV Monitor  
Laser Disc Player  
Audio  
Video  
Audio  
Video  
L
L
L
L
L
L
LD Play  
R
R
R
R
R
R
Audio Out  
Audio Out  
Video Out  
Video In  
Line Out  
Rec/In  
Play/Out  
Rec/In  
Video In  
Play/Out  
Video Out  
Discrete 5.1 Adapter  
Monitor  
Video 4 Rec Video 4 Play  
Video 3 Play Video 2 Play Video 1 Play  
Monitor  
Video 4 Rec Video 4 Play Video 3 Play Video 2 Play Video 1 Play  
Comp  
S
Video Video  
PARASOUND P/SP-1500  
AV Processor / Preamplifier  
Parasound Products, Inc  
San Francisco, CA U.S.A.  
AC 120V 60Hz  
Video  
Audio 3  
Audio 2  
Audio 1  
Video 4 Rec Video 4 Play  
Video 3 Play Video 2 Play Video 1 Play  
Rec Output  
Rear  
Center  
Front/Direct  
R
L
L
External  
Remote  
Input  
DC Trigger  
Center  
Speaker  
Sub Control  
+12V GND  
L C R full range  
Sub off  
None  
Small  
L C R full range  
Sub full range  
R
Large  
or THX  
L C R high pass  
THX Filters  
Subwoofer  
Audio Inputs  
Audio Outputs  
Power Consumption 20 W  
Notes:  
Alternate Connection  
1. If you are using amplifiers with different power ratings, use  
the highest rated power amplifier for the center and subwoofer  
channels. Use the next most powerful amplifier for the left and  
right channels. Your smallest amplifier should be used for the  
surround channels.  
1
2
1
2
1
2
2. Connections from the video components to the P/SP-1500  
show both S-video and composite video jacks. If the video  
component you are connecting to the P/SP-1000 has both,  
use only one type at a time.  
Amplifier 1  
Amplifier 2  
Amplifier 3  
3. For clarity, drawing does not show all possible connections.  
4. Safety and patent information are on the bottom panel.  
Left Speaker  
Center Speaker  
Right Speaker  
Left Surround  
Right Surround  
Subwoofer  
Powered Subwoofer  
Input and Output Connections to the Parasound P/SP-1500  
 
P/SP-1500 Owner's Manual  
7
5.1 Outboard Adaptor Input Connection  
The DB-25 connector on the rear panel of your P/SP-1500 will accept the processed analog output of an  
outboard 5.1 digital adaptor such as the Parasound P/DD-1500 Digital Surround Processor (available Fall,  
1996). With this advanced feature, you can play Dolby Digital AC-3 sources and keep up-to-date with the  
latest advancements in digital surround and home theater technology.  
Audio Output Connections  
Front Left and Right Channel Outputs  
Connect the left and right Front/Direct outputs of your P/SP-1500 to the inputs of the two channel  
amplifier or multi-channel amplifier that will power your front left and right (L, R) speakers.  
Center Channel Output  
Connect the Center output of your P/SP-1500 to the input of the amplifier or the channel of a  
multi-channel amplifier that will power your center (C) speaker.  
Left and Right Surround Channel Outputs  
Connect the left and right Rear outputs of your P/SP-1500 to the inputs of the two channel amplifier or  
multi-channel amplifier that will power your left and right surround (LS, RS) speakers.  
Subwoofer Output  
Connect the Subwoofer output of your P/SP-1500 to the input of the power amplifier or channel of a  
multi-channel amplifier that will power your subwoofer or to the line input of a powered subwoofer (Sub).  
Audio Only Record/Play Connections  
Use these outputs in conjunction with any of the audio inputs and an audio tape deck. Connect the left and  
right Play/Output of your tape deck to the left and right input connectors of Audio 1, Audio 2 or  
Audio 3. Next, connect the left and right Rec Output of your P/SP-1500 to the left and right Audio  
Record/Input connectors of your tape deck.  
Recording From Your P/SP-1500  
You can use your P/SP-1500 for both audio/video and audio only recording with the Video 4 and Audio  
Rec Output connections. To record through either of these recording output connectors, simply select the  
source you want to record on the front panel or remote control and the P/SP-1500 simultaneously routes  
the audio and video to the connectors of Video 4 Rec and to the audio connectors of Audio Rec Output.  
Subwoofer Control Switch  
The three position Subwoofer Control switch allows you to configure the subwoofer output jack to suit  
your speaker system. If your front speakers are designed to run full range and you are not using a  
subwoofer, set the Subwoofer Control switch to the L, C, R, Full Range/Sub off position. If your front  
speakers are designed to run full range and you are using a subwoofer with a built in low-pass filter, set the  
switch to the L, C, R, Full Range/Sub full range position. If you are using a THX-approved speaker  
system that includes a subwoofer, set the switch to the L, C, R, Sub/THX Filters position. This activates  
the built-in THX designed asymmetrical low pass and high pass crossover for the subwoofer and front left,  
center, and right speakers. The low-pass filter for the subwoofer has a high frequency roll-off of 24 dB per  
octave starting at 80 Hz. The high-pass filter has a low frequency roll-off of 12 dB per octave starting at  
80 Hz for the front left, center, and right speakers.  
 
8
P/SP-1500 Owner's Manual  
Center Channel Speaker Selector  
Set this rear panel switch to accommodate the type of center channel speaker you will be using.  
Following are descriptions of the preferred center channel switch settings based upon the center speaker  
you will be using.  
Large or THX (Wide Band)  
Switch to the Large or THX position for center channel speakers that have extended low bass capability  
and can play as loud as your front left and right speakers without bass distortion. Use this setting for  
THX Home Cinema center speakers. In this position, the P/SP-1500 routes the entire audio bandwidth  
(20 Hz - 20 kHz) to the center channel output.  
Small (Normal)  
Switch to the Small position for smaller sized center channel speakers. In this position, the P/SP-1500  
protects your center channel speaker from bass overload and distortion by diverting bass frequencies  
below 100 Hz to the left and right channels. In this position, front channel imaging remains tonally  
balanced even with the limited bass capability of a smaller center channel loudspeaker.  
None (Phantom)  
Switch to the None position if you do not have a center channel speaker. In this position, the front right  
and left speakers share reproduction of the mono center channel signal to create a “phantom” image in  
the center. However, without a good quality center channel speaker, you will be missing one of the key  
benefits of Dolby Pro Logic and THX Cinema processing.  
External Remote Control Input  
The external infrared input works with many popular infrared repeater systems to allow for remote  
control operation when infrared signals cannot directly reach the front panel receiver. The external  
remote input connector is a standard 1/8 inch (3.5 mm) mini jack. Wire the tip for this plug positive and  
the sleeve negative. Your Authorized Parasound Dealer or Custom Installer can recommend a  
compatible repeater system for your P/SP-1500.  
DC Trigger  
This connector provides a +12 Volt DC 350 milliampere capacity trigger whenever you turn on the  
P/SP-1500. Use this connector to activate equipment such as relays, rear screen projectors, motors for  
film screens, power amplifiers or other components that can be triggered with DC voltage. You can also  
use this DC Trigger connection to activate the two 15 Ampere relays in the optional Parasound SCAMP  
Signal Controlled Amplifier Power automatic switching component. Contact your Parasound Dealer or  
Custom Installer for more information about the SCAMP.  
AC Line Cord Receptacle  
The rear panel mounted IEC standard AC receptacle accepts an audiophile-grade AC cord supplied with  
your P/SP-1500. Plug the female end of the AC cord firmly into the AC receptacle and make sure that it  
is properly seated. Connect the male end directly to an AC wall outlet that is always "live" so that the  
P/SP-1500 retains all its memorized settings. Avoid use of an extension cord or power strip since these  
often degrade sound quality.  
 
Infrared Sensor  
Front Panel Display  
B
O
Y
S
-
U
N
D
D
R
O
L
U
C
R
L
R
O
O
P
G
I
C
dB  
R
L
C
p l i f i e r  
P r o c e s s o r / P r e a m  
A
S
F
I
L
M
L
U
V
P / S P - 1 5 0 0  
A
SUB  
RS  
LS  
Volume  
Stereo  
Dolby  
THX  
5.1  
Audio  
3
Audio  
2
Audio  
1
Video  
4
Video  
3
Video  
2
Video  
1
On-Off  
Direct Pro Logic Cinema  
Discrete  
On Off Switch  
Audio/Video Inputs  
Audio Inputs  
Primary Modes  
Volume Control  
Off  
On  
Mute  
Off Mute and On Buttons  
R-15  
Cal  
Input Level Calibration  
and Trim Controls  
Volume Controls  
Input  
Trim  
Volume  
Display  
Delay  
Delay and Display Buttons  
Video 1  
Video 4  
Video 2  
Audio 1  
Video 3  
Audio 2  
Input Section  
Mode Section  
Audio 3  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Ambiance  
Pro Logic  
P/SP-1500 Front Panel and Remote Control  
 
10  
P/SP-1500 Owner's Manual  
Operating Your P/SP-1500  
Refer to Diagram on Page 9  
Using the Remote Control with On Screen and Front Panel Displays  
The remote control included with your P/SP-1500 gives you complete access to all functions including  
power, direct input selection, modes, volume, and calibration. The advanced on-screen and front panel  
displays keep you informed of all of the various functions of the P/SP-1500.  
On and Off Switches  
There are separate On and Off remote control commands for the P/SP-1500 and a combined On-Off  
button on the front panel. Press the On button to turn the unit on and press the Off button to turn it off.  
When the P/SP-1500 is first turned on, the on-screen display shows the previously selected input, mode,  
input level, and master volume level. At the same time, the front panel indicates the selected input, one  
of three key processing modes, active channels, and master volume level. The on-screen status remains  
on the screen for about four seconds. Whenever you turn on the P/SP-1500, it displays the source,  
mode, and volume that were present when the unit was last turned off.  
Off  
On  
Mute  
R-15  
Cal  
Trim  
Delay  
Input  
Volume  
SOURCE  
MODE  
VIDEO 1  
Display  
Video  
Video  
1
4
THX CINEMA  
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
dB  
L
C
R
INPUT LEVEL - 3 dB  
VOLUME - 28 dB  
Audio  
3
LS SUB RS  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Stereo  
THX  
5.1 Ch  
Dolby  
Volume  
Ambiance  
Pro Logic  
Direct Pro Logic Cinema Discrete  
Mute  
Press the mute button to completely interrupt the audio signal from reaching the output of the  
P/SP-1500. When the mute function is engaged, Mute is displayed on the front panel and on-screen.  
The mute button will not affect the Video 4 and Audio Rec output jacks.  
Display  
Pressing the Display button will show you the status of the P/SP-1500’s primary functions: selected  
input, processing mode, input level, and master volume level. This display will remain on until you  
press Display again or unless the unit is turned off. If there is no video source playing when you press  
display, the P/SP-1500 shows the current status on a blue background. If a video source is playing, the  
status appears over the video signal.  
Off  
On  
Mute  
R-15  
Cal  
Trim  
Delay  
SOURCE  
MODE  
VIDEO 1  
Input  
Volume  
THX CINEMA  
Display  
Video 1  
Video 4  
INPUT LEVEL - 3 dB  
VOLUME - 28 dB  
Video 2  
Audio 1  
Video 3  
Audio 2  
Audio 3  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Ambiance  
Pro Logic  
 
P/SP-1500 Owner's Manual  
11  
Volume  
You can adjust the Volume from the remote control or on the front panel. The on-screen and front panel  
displays indicate the volume level in decibels relative to THX Reference Level and all active channels will  
flash for three about seconds each time you change the volume. The volume keys are also used in  
conjunction with the Cal and Trim functions (see page 14 and 16).  
Input Level Controls and Input Overload Indicator  
These remote control adjustments limit the amount of signal sent to the surround processor from your  
source components to maximize headroom. You can attenuate the Input level from its maximum of  
0 dB to a minimum of -12 dB. Any time the input circuitry is being overdriven, the P/SP-1500 displays  
Over on the front panel display and  
in the upper right hand corner of the on-screen display any time  
there is an overload. Set the Input level so the overload indicators flicker only with the highest peak  
levels. If the Over indicators flash frequently, reduce the Input level accordingly.  
Off  
On  
Mute  
R-15  
Cal  
Trim  
Delay  
SOURCE  
MODE  
VIDEO 1  
Input  
Volume  
THX CINEMA  
Display  
Video  
Video  
1
4
L
C
R
dB  
INPUT LEVEL - 2 dB  
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
LS SUB RS  
Over  
Audio  
3
Stereo  
THX  
5.1 Ch  
Dolby  
Volume  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Direct Pro Logic Cinema Discrete  
Ambiance  
Pro Logic  
Input Selectors  
You can select any of the seven inputs from the remote control or on the front panel. When you select an  
input, a green LED on the front panel will illuminate corresponding to the selected input The  
on-screen display will show the selected input, mode and input level.  
Processing Modes  
There are seven processing modes available with your P/SP-1500. All seven modes are accessible from the  
remote control while the four most used processing modes are also accessible on the front panel.  
Dolby Pro Logic  
You can select the Dolby Pro Logic mode from the remote control or on the front panel. This mode  
accurately decodes Dolby Surround encoded material to provide multi-channel playback including  
dedicated center and surround channels. Most video releases of major movies and many television  
programs, compact discs and video games are Dolby Surround encoded. You may use the Dolby Pro  
Logic mode on a wide variety of non-encoded material with good results. Most stereo recordings will  
produce surround effects to varying degrees, and center channel signals such as vocals will emanate more  
naturally from the center channel. All output channels are operative in this mode.  
THX Cinema  
When you select the THX Cinema mode on the front panel or remote control, the P/SP-1500 engages  
proprietary Lucasfilm circuitry along with Dolby Pro Logic processing. These THX processing circuits  
include re-equalization, timbre matching, and de-correlation. THX Cinema processing greatly enhances  
the film experience by equalizing excess treble mixed into many soundtracks and optimizing the  
performance of surround speakers. If you are using THX Home Cinema speakers, you will probably want  
to engage the THX Cinema mode for the playback of most film soundtracks. You can choose the THX  
Cinema mode from either the remote control or on the front panel.  
 
12  
P/SP-1500 Owner's Manual  
Stereo Direct  
For critical listening, the Stereo Direct mode engages a precision bypass relay to route the selected input  
source around all the surround processing circuitry of the P/SP-1500 and directly to its preamp section. As  
a result, only the front left, right and subwoofer channels are active in the Stereo Direct mode. You can  
select this mode from the remote control or on the front panel.  
Hall  
The Hall mode simulates the reverberant sonic characteristics of a concert hall. This mode enhances both  
classical and rock music recordings. You can select the Hall mode only from the remote control. All  
channels are operative in this mode.  
Ambiance  
The Ambiance mode adds a sense of spaciousness from the surround channels without any processing of  
the front left and right channels. You can select the Ambiance mode only from the remote control. All  
channels except center are operative in this mode. The ambiance mode is designed primarily as a subtle  
enhancement to music rather than films.  
Mono  
When you select the Mono mode, the P/SP-1500 routes the summed left and right signals to the center and  
subwoofer channels only. This mode works well for classic films, and older mono music recordings. If you  
have the rear panel center speaker selected to the None position, the mono signal will appear in the front left  
and right speakers to form a phantom image.  
5.1 Discrete  
When you select the 5.1 Discrete mode, the P/SP-1500’s output circuitry “looks” to the DB-25 connector  
on its rear panel for analog signals decoded from a digital 5.1 outboard processor. There is an expanding  
library of films available that are encoded in either Dolby Digital (AC-3) or DTS (Digital Theater Sound).  
We designed the Parasound P/DD-1500 Dolby Digital (AC-3) processor (available Fall, 1996) specifically  
to connect to this input. Be aware that if you have not connected a compatible outboard processor to the  
DB-25 input, there will be no output from the P/SP-1500 when you select the 5.1 Discrete mode. You can  
select the 5.1 mode from the remote control or on the front panel.  
Storing Input Levels and Modes to Specific Inputs  
For ease of operation, you can program the P/SP-1500 to memorize the input level and mode for a specific  
input. For example, you may want your laser disc player connected to Video 1 to automatically be activated  
in the THX Cinema mode with an input level of -3 dB each time this input is selected. You can use either  
the remote control or front panel to memorize the input level and mode for a given input. Simply set the  
desired input level and select the mode you want to store, then hold down the source select input button  
where you want it stored until the word MEMORIZE flashes within the on-screen display. When MEMORIZE  
stops flashing after three seconds, the P/SP-1500 has stored the input level and mode for the input displayed  
on the screen. Whenever you return to a programmed input, the P/SP-1500 recalls its memorized input  
level and mode.  
Off  
On  
Off  
On  
Mute  
Off  
On  
Mute  
Mute  
Cal  
Trim  
Delay  
Cal  
Trim  
Delay  
Cal  
Trim  
Delay  
SOURCE  
MODE  
VIDEO 1  
Input  
Volume  
Input  
Volume  
Input  
Volume  
Display  
Display  
Display  
THX CINEMA  
Video  
Video  
1
4
Video  
Video  
1
4
Video  
Video  
1
4
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
INPUT LEVEL - 3 dB  
Audio  
3
Audio  
3
Audio  
3
5.1 Ch  
THX  
Mono  
5.1 Ch  
THX  
Mono  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Stereo  
Direct  
Stereo  
Direct  
Ambiance  
Pro Logic  
Ambiance  
Pro Logic  
Ambiance  
Pro Logic  
MEMORIZED  
3
Hold down input  
2
DownSloealedctfmroomde Www.Somanuals.com. All Manuals Search And Download.  
1
Set input level  
P/SP-1500 Owner's Manual  
13  
Surround Channel Delay  
The surround delay circuitry allows you to choose the amount of time it takes sound from the surround  
channel speakers to follow the sound from the front left, right, and center speakers. This establishes the  
precedence effect for the front channel speakers and helps you associate the sound with the image on the  
screen rather than from behind you. (The precedence effect is how our hearing tends to identify or  
localize sounds that we hear first when being subjected to a number of similar sounds coming from all  
around us.) You can set the Delay time in 5 millisecond intervals from 15 to 30 milliseconds. Although  
the recommended delay time for Dolby Pro Logic is 20 milliseconds, you can use the remote control to  
adjust the delay time to best suit your listening room. The front panel and on-screen display both  
indicate the amount of surround delay time. Use the chart below to best select the surround delay time  
for your system.  
Off  
On  
Mute  
R-15  
Cal  
Trim  
Delay  
Input  
Volume  
SOURCE  
MODE  
VIDEO 1  
THX CINEMA  
20MS  
Display  
Video  
Video  
1
4
Video  
Audio  
Hall  
2
1
Video  
Audio  
3
2
L
C
R
DELAY  
Audio  
3
LS SUB RS  
mS  
5.1 Ch  
THX  
Mono  
VOLUME  
- 28 dB  
Stereo  
Direct  
Stereo  
THX  
5.1 Ch  
Dolby  
Ambiance  
Pro Logic  
Volume  
Direct Pro Logic Cinema Discrete  
25 ms 20 ms  
15 ms  
40  
15 ms  
35  
30  
25  
15 ms  
15 ms  
10 ms  
5 ms  
20  
15  
Differential  
Arrival Time  
10  
Preferred  
5
0
Acceptable  
Not Recommended  
0
5
10  
15  
20  
25  
30  
35  
40  
Distance from listening area to front speakers (feet)  
XX ms  
Useable speaker placement range with  
delay time  
 
14  
P/SP-1500 Owner's Manual  
Calibrating Your Home Theater System  
Calibration involves independently adjusting the output level for each of the six channels of your  
P/SP-1500 to accommodate different types of speakers and their placement variations. System  
calibration is critical for optimum performance of your home theater. The P/SP-1500’s front panel and  
on-screen display make system calibration very easy to perform. Since the only way to adjust individual  
channel levels properly is from your listening/viewing position, the calibration controls are only  
accessible from the remote control.  
The most objective way to calibrate your system is with a sound pressure level (SPL) meter such as the  
Realistic Sound Level Meter (catalog # 33-2050) available from Radio Shack stores in the USA for  
around $30.00. If you use an SPL meter for calibration, hold it upright directly in front of your head  
while you are seated in your listening area as you make adjustments. If an SPL meter is unavailable,  
you can still adjust levels by ear with excellent results.  
You can only perform system calibration from the remote control after selecting the Dolby Pro Logic  
mode. Begin calibration by holding down the Cal button on the remote control while watching either  
the front panel and/or on-screen display. Upon entering the Cal mode, the entire on-screen display  
flashes CALIBRATE CH LEVELS and will also show individual channels and their decibel levels. The  
master level will also automatically change to 0 dB to represent the THX reference level.  
After four seconds, the blue background of the on-screen display will change to red, and you will hear  
the "pink noise" test tone in the left channel to signal the beginning of the calibration cycle. The letter  
L will also flash on-screen and on the front panel. As you continue to press the Cal button, the test  
signal and displays will advance in the order of L, C, R, LS, RS, AND SUB. Advance through the  
individual channels by sequentially pressing the Cal button.  
Adjust each channel level with the volume buttons on the remote control until each speaker plays at the  
same apparent loudness. (This is where the SPL meter comes in very handy.) As you press the volume  
up or down button, the decibel levels in the on-screen and the front panel displays will change in 1 dB  
increments for the channel that is flashing.  
You complete the calibration sequence after adjusting the subwoofer by pressing Cal once again. You  
will automatically exit from the calibration mode and the screen will return to normal. When you press  
the Cal button any time after calibration, the P/SP-1500 displays your six original calibrated levels along  
with acknowledgment of calibration with the word MEMORIZED. This calibration recall feature allows  
you to return to your calibrated levels if you suspect that individual channels have been changed.  
Once you have completed the calibration procedure, record your individual calibrated channel levels  
here for future reference in case your P/SP-1500 loses AC power for over 24 hours.  
CALIBRATE CH LEVELS  
CALIBRATE CH LEVELS  
L
C
R
L
C
R
___dB  
___dB  
___dB  
___dB  
___dB  
___dB  
LS  
SUB  
RS  
LS  
SUB  
RS  
___dB  
___dB  
___dB  
___dB  
___dB  
___dB  
Date _______  
Date _______  
 
P/SP-1500 Owner's Manual  
15  
Off  
On  
Off  
On  
Mute  
Mute  
R-15  
R-15  
Cal  
Trim  
Delay  
Cal  
Trim  
Delay  
Input  
Volume  
Input  
Volume  
Display  
Display  
CALIBRATE CH LEVELS  
Video 1  
Video 4  
Video 1  
Video 4  
L
C
R
Video 2  
Audio 1  
Video 3  
Audio 2  
Video 2  
Audio 1  
Video 3  
Audio 2  
0 dB  
0 dB  
0 dB  
Audio 3  
Audio 3  
L
C
R
dB  
LS SUB RS  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
Hall  
5.1 Ch  
THX  
Mono  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Stereo  
Direct  
Ambiance  
Pro Logic  
Ambiance  
Pro Logic  
Stereo  
THX  
5.1 Ch  
Dolby  
Volume  
Direct Pro Logic Cinema Discrete  
CALIBRATE CH LEVELS Flashes  
Select Dolby Pro Logic on remote or front panel  
Hold Cal button  
for 3 seconds  
1
2
3
Off  
On  
Mute  
R-15  
Cal  
Trim  
Delay  
Input  
Volume  
Display  
CALIBRATE CH LEVELS  
Video 1  
Video 4  
L
C
R
Video 2  
Audio 1  
Video 3  
Audio 2  
0 dB  
0 dB  
0 dB  
Audio 3  
L
C
R
dB  
LS SUB RS  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Ambiance  
Pro Logic  
Stereo  
THX  
5.1 Ch  
Dolby  
Volume  
Direct Pro Logic Cinema Discrete  
Screen turns red and L Flashes on-screen and front panel  
Set channel levels  
with Volume buttons  
5
4
Off  
On  
Mute  
R-15  
Cal  
Input  
Volume  
Trim  
Display  
Delay  
CALIBRATE CH LEVELS  
CALIBRATE CH LEVELS  
Video 1  
Video 4  
L
C
R
L
C
R
Video 2  
Audio 1  
Video 3  
Audio 2  
0 dB  
0 dB  
0 dB  
0 dB  
0 dB  
0 dB  
Audio 3  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Ambiance  
Pro Logic  
MEMORIZED  
Press Cal to advance to next channel  
After adjusting last channel (SUB)  
screen shows MEMORIZED and  
returns to normal  
7
6
 
16  
P/SP-1500 Owner's Manual  
Using the Trim Function for Temporary Level Adjustment  
If you want to temporarily adjust the individual levels of any channel for a particular soundtrack or  
recording, use the Trim button on the remote control. For example, you may want to boost your  
subwoofer or surround levels for a particular soundtrack without having to change the levels back when  
you play your next selection.  
The Trim function works in much the same way as the calibration function. Since the Trim function is  
designed to let you make adjustments "on-the-fly", the on-screen display is superimposed on the picture  
you are viewing instead of turning the screen blue or red. Begin adjusting levels by holding down the  
Trim button on the remote control while watching either the front panel and/or on-screen display.  
Upon entering this mode, the on-screen display flashes TRIM LEVELS. It also displays the individual  
channels and their decibel levels. At the same time, the master level changes to 0 dB to represent THX  
reference level and the letter L will flash on-screen and on the front panel. As you continue to press the  
Trim button, the displays will advance in the order of L, C, R, LS, RS, AND SUB. Advance through the  
individual channels by sequentially pressing the Trim button. Adjust the channel level with the volume  
buttons on the remote control to suit your tastes. As you press the volume up or down button, the  
decibel levels in the on-screen and the front panel displays will change in 1 dB increments for the  
channel that is flashing.  
Once you have finished the Trim sequence after adjusting the subwoofer (if desired), press Trim again.  
You will automatically exit from the Trim mode and the screen will return to normal. Since the trim  
function is temporary, if you change inputs, modes, or turn the P/SP-1500 off, the individual channel  
levels will automatically return to the settings memorized during calibration.  
Off  
On  
Off  
On  
Mute  
Mute  
R-15  
R-15  
Cal  
Trim  
Delay  
Cal  
Trim  
Delay  
Input  
Volume  
Input  
Volume  
Display  
Display  
TRIM LEVELS  
Video 1  
Video 4  
Video 1  
Video 4  
L
0 dB  
C
0 dB  
R
0 dB  
Video 2  
Audio 1  
Video 3  
Audio 2  
Video 2  
Audio 1  
Video 3  
Audio 2  
Audio 3  
Audio 3  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
Hall  
5.1 Ch  
THX  
Mono  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Stereo  
Direct  
Ambiance  
Pro Logic  
Ambiance  
Pro Logic  
Hold Trim button until TRIM LEVELS and L flashes  
Adjust level with  
Volume buttons  
2
1
Off  
On  
Mute  
R-15  
Cal  
Input  
Volume  
Trim  
Display  
Delay  
TRIM LEVELS  
TRIM LEVELS  
Video 1  
Video 4  
L
C
R
L
C
R
0 dB  
Video 2  
Audio 1  
Video 3  
Audio 2  
0 dB  
0 dB  
0 dB  
0 dB  
0 dB  
Audio 3  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
LS  
0 dB  
SUB  
0 dB  
RS  
0 dB  
Hall  
5.1 Ch  
THX  
Mono  
Stereo  
Direct  
Ambiance  
Pro Logic  
Press Trim to advance to next channel  
After adjusting last channel (SUB)  
screen returns to normal  
4
3
 
P/SP-1500 Owner's Manual  
17  
Maintaining Your P/SP-1500  
Your P/SP-1500 requires no periodic maintenance and has no user serviceable parts inside. To avoid the  
risk of electric shock do not remove the top cover. Clean the chassis with a soft cloth moistened only with  
Windex or clear water. Never use solvents or abrasives.  
Remove the two AA batteries from the remote control if you do not plan to use it for an extended period.  
Remove the battery cover annually to inspect and remove leaking batteries.  
P/SP-1500 Troubleshooting Guide  
No Power  
Make sure the AC cord is properly seated in the IEC AC receptacle on rear panel.  
No Output to One or All Channels  
Make sure that P/SP-1500 indicators are on.  
Check interconnects to power amplifier(s).  
Check power amplifier(s).  
Check channel levels with Trim or Cal buttons on remote control.  
Hum in Speakers  
Check for a grounding problem with the cable TV system; call your cable operator.  
Consider installing a cable isolation device such as the Video Link #634 or the Mondial Magic  
No Output to Surround Channels  
Make sure that source playing is in stereo; processor cannot derive surround channels from mono signals.  
No Center Channel Output  
Make sure the Center Speaker switch on the rear panel is not set to the None position.  
No Sub Channel Output  
Make sure the Sub Control switch on the rear panel is not in the Off position.  
Lights on Front Panel are Working, but No Response Via Remote or Front Panel.  
The microprocessor "brain" within P/SP-1500 may have “locked up” due to an AC voltage spike.  
Remove power cord from outlet for 30 seconds and plug back in.  
Audio Present, but No Video Output  
Make sure that composite or S-video output connections are consistent with inputs. See Page 6  
Check video source  
Try another video source.  
No On-screen Display  
Check monitor or projector connections.  
Loses Memorized Settings  
Check to make sure that AC outlet is always live and not switched off.  
 
18  
P/SP-1500 Owner's Manual  
Remote Control Won't Work  
Check batteries  
Check for front panel operation to verify problem is not with P/SP-1500  
DC Trigger Won't Activate Other Components  
Check voltage at connector with DC voltmeter  
Make sure other components do not require voltage exceeding +12 Vdc or current exceeding 350 mA  
If All Else Fails  
If you cannot get your P/SP-1500 to operate properly after referring the troubleshooting guide, call your  
Parasound dealer or Parasound Technical Service. We can suggest other diagnostic tests you can easily  
perform. If we determine that your P/SP-1500 should be returned to Parasound or an Authorized  
Parasound Warranty Center for inspection and possible servicing, call for the location of a warranty  
center near you. If you choose to send it to Parasound, contact us to obtain a Return Authorization (RA)  
number. You will be asked to re-pack the unit in its original packaging plus an additional outer box for  
protection during transit. The Return Authorization number must be clearly marked on the outer carton  
only. You should ship the unit by UPS with adequate insurance. You must also include a copy of your  
purchase receipt to validate your ownership.  
Units that arrive without your specific Return Authorization number, without a suitable shipping carton  
or evidence of improper internal packing must be refused. We do not accept collect shipments. After  
repair under warranty, the unit will be returned to you via prepaid UPS. In the case of an out of warranty  
repair, contact us and we will advise you of the repair charges before you ship the unit to us. The same  
packing and Return Authorization requirements apply.  
Notes:  
 
P/SP-1500 Owner's Manual  
19  
P/SP-1500 Specifications  
Dolby Pro Logic/THX Cinema  
Preamp Direct  
Audio Section  
Frequency Response  
Front  
Rear  
Center (Small)  
Center (Large or THX)  
Subwoofer  
12 Hz-60 kHz  
500 Hz-6.5 kHz  
200 Hz-60 kHz  
12 Hz-60 kHz  
10 Hz-80 Hz  
10 Hz-100 kHz  
10 Hz-80 Hz  
< 0.01 %  
< 0.15 %  
200 mV  
Harmonic Distortion  
Front  
Center  
Rear  
Subwoofer  
< 0.06 %  
< 0.06 %  
< 0.6 %  
< 0.15 %  
Input Sensitivity  
All Channel Inputs  
200 mV  
Input Impedance  
All Inputs  
47 kΩ  
47 kΩ  
IM Distortion  
(1 kHz 1V Output)  
All Channels  
< 0.06 %  
< 0.01 %  
Signal/Noise Ratio  
(Flat/A-Weighted)  
Front  
Center  
Rear  
78 dB / 92 dB  
78 dB / 92 dB  
78 dB / 85 dB  
78 dB / 92 dB  
85 dB / 100 dB  
85 dB / 100 dB  
Subwoofer  
Video Section  
(Output 1 V / 75 Load)  
Sensitivity  
Frequency Response  
Overload  
1 V + /- 1 dB  
0.3 MHz -10 MHz + /- 1 dB  
1.4 V  
Dimensions  
19" wide x 3 1/2" high x 13" deep 4 1/8" high with feet  
Weight  
16 lb  
Power Requirements  
110 V - 120 V 60 Hz AC, 19 W; may be rewired for 220 V - 240 V, 50 Hz  
 
20  
P/SP-1500 Owner's Manual  
Special Features  
Four Audio/Video Inputs  
Audiophile IEC AC Cord  
Seven Processing Modes  
Rear Panel Infrared Input  
On-Screen Display  
Automatic Bypass Direct Output  
Adjustable Surround Delay Times  
32,000 µF Main Power Supply  
Precision Resistors and Capacitors  
Silver Plated Internal Wiring  
Preamp Direct Circuitry  
Gold Clad Precision Bypass Relays  
Center Speaker Selector (Phantom)  
Heavy Duty Two Rack Space Chassis  
Lucasfilm THX Certified  
5.1 Discrete Upgradeability  
Built-in Asymmetrical Crossover  
Calibrated Level Memory  
Relay Switched S-Video Capability  
High Current Audio Section  
External Infrared Input  
Independent Regulated Power Supplies  
Selectable Center Channel Operation  
Analog Pro Logic Processing  
Specifications and features subject to change without notice  
 
P/SP-1500 Owner's Manual  
21  
Parasound Limited Warranty (USA only)  
Your Parasound P/SP-1500 is covered by a limited warranty against defects in materials and  
workmanship for a period of two years from date of purchase. This warranty is provided by the  
Parasound dealer where the unit was purchased. Warranty repair will be performed only when a copy of  
your purchase receipt is presented to validate your ownership, date of purchase and authorized status of  
the selling dealer. Defective parts will be repaired or replaced without charge by your authorized  
dealer’s store or the location designated by your dealer that is authorized to service Parasound  
equipment. Additional information is available by calling or writing to the Service Manager, Parasound  
Products, Inc. at the address below. Charges for unauthorized service and transportation costs are not  
reimbursable under this warranty.  
This warranty becomes void if the product has been damaged by alteration, misuse, accident or neglect.  
Alteration includes any removal or defacement of its serial number. This warranty  
becomes void if unit has been connected or operated contrary to printed instructions. The warrantor  
assumes no liability for property damage or any other incidental or consequential damage whatsoever  
which may result from the failure of this product. Any and all warranties of merchantability and fitness  
implied by law are limited to the duration of this expressed warranty.  
Some states do not allow limitations on how long an implied warranty lasts, so the above limitations  
may not apply to you. Some states do not allow the exclusion or limitation of incidental or  
consequential damages, so the above limitation or exclusion may not apply to you.  
This warranty gives you specific legal rights and you may also have other rights which vary state by  
state.  
Manufactured under license from Lucasarts Entertainment Company. U.S. and foreign patents pending.  
Lucasfilm Audio and Home THX are trademarks of Lucasarts Entertainment Company, Lucasfilm is a trademark  
of Lucasfilm Ltd.  
This unit is manufactured under license from Dolby Laboratories Licensing Corporation. "Dolby",  
"Pro Logic", and the double-D symbol are trademarks of the Dolby Laboratories Licensing Corporation.  
affordable audio for the critical listener  
Parasound Products, Inc. 950 Battery Street, San Francisco, CA 94111  
415-397-7100 / FAX 415-397-0144  
© 1996 Parasound Products, Inc.  
Rev. B  
 

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