USER MANUAL
Xwave
Enhancement Module
5.1 Channel
January 1999
A15-0159-110
QS7785PF Daughter Board
The information in this document is subject
to change without notice
Federal Communications Commission (FCC) Statement
This equipment has been tested and found to comply with the limits for a class B digital
device, pursuant to part 15 of the FCC rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of the following
measures:
!!!!
Reorient or relocate the receiving antenna.
!!!!
Increase the separation between the equipment and receiver.
!!!!
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected.
!!!!
Consult the dealer or an experienced radio/TV technician for help.
Warning:
Use only shielded cables to connect I/O devices to this equipment.
You are cautioned that changes or modificatio ns no t expressly approved by the
party responsible for compliance could void your authority to operate the
equipment.
Note:
The user may find the following booklet prepared by the Federal Communications
Commission helpful:
" How to Identify and Resolve Radio-TV Interference Problems. "
This booklet is available from the U.S. Government Printing Office,
Washington, DC 20402
Stock No. 004-000-00345-4.
All brands and trademarks are registered by their respective companies.
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QS7785PF Daughter Board
TABLE OF CONTENTS
DESCRIPTION....................................................................................... 3
EATURES
F
YSTEM REQUIREMENTS
S
OARD FIGURE
B
ONNECTORS
C
UMPER SETTINGS FOR
J
HARDWARE INSTALLATION........................................................... 5
ANDLING THE DAUGHTER BOARD
H
NSTALLING THE DAUGHTER BOARD
I
...........................................................................................................................3
Hardware Features........................................................................................................................3
.....................................................................................................3
Sound Card....................................................................................................................................3
...................................................................................................................3
......................................................................................................................4
External Connectors......................................................................................................................4
Internal Connectors.......................................................................................................................4
JP1 .................................................................................................4
.....................................................................................5
...................................................................................5
Connecting the right devices..........................................................................................................6
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QS7785PF Daughter Board
DESCRIPTION
The QS7785 is a 3D audio processor IC that lets you upgrade your sound card’s
stereo output to 5.1 channel audio output. In addition you can connect your MIDI
device directly to this daughter board.
Features
Hardware Features
• 3D synthesized surround sound for left and right speakers
• 3D stereo sound enhanced for left and right front speakers
• Center and subwoofer speaker outputs
System Requirements
Sound Card
• Sound Blaster 16 or compatible sound card required with a 16-pin feature
connector.
Board Figure
Spacer Support Spacer Support
Center Speaker
and Subwoofer
Rear Speakers
Front Speakers
MIDI IN
MIDI OUT
SPDIF OUT
J1
J2
J3
J4
J5
J6
Spacer Support
Figure - 1
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3
QS7785 Audio
Processor
JP1
Spacer Support
QS7785PF Daughter Board
Connectors
This Daughter Board includes six external connectors and one Jumper switch.
External Connectors
J1: ................
J2: ................
J3: ................
J4: ................
J5: ................
J6: ................
∅ 3.5mm Phone Jack for
∅ 3.5mm Phone Jack for
∅ 3.5mm Phone Jack for
External Connector for
External Connector for
External Connector for
CENTER SPEAKER and SUBWOOFER
REAR SPEAKERS
FRONT SPEAKERS
MIDI INPUT
MIDI OUTPUT
SPDIF OUTPUT
Internal Connectors
J1: ................
3-pin Jumper
Jumper Settings for JP1
This Daughter Board includes a 3-pin Jumper to select between “5.1 Channels”
or “2-Channel Enhanc ement”.
1
2
5.1 Channels
(using Connector J1/J2/J3
for 6 Speakers)
3
3
3
2
2
1
1
2-Channel Enhancement
(using Connector J3
for the FRONT Speakers)
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QS7785PF Daughter Board
HARDWARE INSTALLATION
Handling the Daughter Board
WARNING:
"
Static electricity can damage your equipment. Do not take the card out of
its static protective bag until you are ready to work with it.
Follow these precautions when handling the board:
• Before you open the static protective bag, touch it to a metal expansion slot cover
on the back of your computer. This drains static electricity from the package and
from your body.
• Do not touch any exposed printed circuitry after opening the package.
• Keep other people from touching the board. They might have a static-electricity
build-up.
• Limit your movement. Movement causes a build-up of static electricity.
Installing the Daughter Board
Follow the steps below to install the daughter board into your co mputer.
1.) Turn off the system and all peripheral devices.
2.) Disconnect the power cord and all peripheral devices from the system.
3.) Remove the system cover and identify two unused PCI slots.
4.) Unscrew both slot cover plates.
5.) Before you insert your PCI sound card into the PCI expansion slot connect the
daughter board’s 16-pin expansion connector to the upgrade connector of your
sound card. Make sure the 4 plastic bolts are connected to the sound card
properly.
(To install your sound card, please refer to your PC user’s manual, and sound
card’s manual respectively for specific instructions.)
6.) Insert now your sound card with the daughter board into the two PCI
expansion slots. Press down gently on the top edges of the sound card to
ensure that all connecting points are seated securely.
7.) Anchor the board’s mounting brackets using the screws removed earlier.
8.) Replace the cover of your PC and reconnect the power cord.
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QS7785PF Daughter Board
Connecting the right devices
1.) First attach the provided cable of your SUBWOOFER and CENTER SPEAKER
to the 3.5mm Phone Jack J1 on the daughter board.
2.) Secondly attach the provided cable of your REAR SPEAKERS to the 3.5mm
Phone Jack J2 on the daughter board.
3.) Then attach the cable of your FRONT SPEAKERS to the 3.5mm Phone Jack J3
on the daughter board.
4.) Connect your MIDI IN cable to the MIDI IN connector J4 on your daughter
board.
5.) After this step connect your MIDI OUT cable to the MIDI OUT connector J5 on
your daughter board.
6.) Finally connect your Dolby Digital Surround Sound receiver to the S/PDIF
connector J6 on your daughter board.
NOTE: To avoid double processing of your audio source please turn off or
disable all other effects of your audio source.
A15-0159-110
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QS7785PF Daughter Board
MEMO
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QS7785PF Daughter Board
MEMO
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