SRS Labs Speaker System CSD 07D User Manual

®
Circle Surround Digital Decoder  
U S E R ’ S  
M A N U A L  
Model CSD-07D  
This product is manufactured by SRS Labs, Inc.  
P00193 V2.0-FW1.0.6.0  
 
Contents:  
Company Information  
Introduction  
2
3
Front Panel  
4
Rear Panel  
5
CSD Setup  
6
Placement Diagram  
CSD Operation  
Button Function Diagram  
Specifications  
7
8
11  
13  
14  
15  
Technical Support  
Warranty Information  
Company Information:  
SRS Labs is a recognized leader in the advancement of  
audio and voice technology. The company works with the  
world’s top manufacturers to provide a richer entertainment  
experience through patented sound techniques. SRS Labs’  
technologies can be heard through products ranging from  
televisions, LCD and plasma monitors, cell phones, MP3  
players, car audio systems, and notebook and desktop  
computers. The company also offers hardware and software  
tools to professionals and consumers for the creation,  
production and broadcast of content featuring SRS Labs’  
technologies. Based in Santa Ana, Calif., the company also  
has licensing representation in Hong Kong, Japan, Europe,  
and Korea. For more information about SRS Labs, Inc.  
please visit www.srslabs.com.  
2
 
Introduction  
The SRS CSD-07D Circle Surround® Digital Reference Decoder is for use in  
professional studio production, mastering and broadcast environments to  
monitor audio, video and multimedia programs encoded with Circle Surround  
(CS) and other matrix-encoded, two-channel (Lt/Rt) Surround Sound  
systems. It can be distributed across two-channel carriers such as stereo  
broadcast television (analog and digital), cable or satellite transmission, VHS  
videotape, computer and console games, CDs, streaming media and two-  
channel DVD soundtracks.  
As a high-performance 5.1 or 6.1 multichannel decoder, the CSD-07D also  
delivers superior performance for decoding of any Dolby Surround® encoded  
content (LCRS). The CSD-07D is a versatile tool for professionals to  
accurately monitor the production of such program material and to evaluate  
the previously matrix-encoded soundtracks of feature films being prepared  
for distribution across consumer two-channel formats.  
Aside from functioning as a reference monitor, the CSD-07D also features SRS  
Labs’ Xtracttechnology for use on mono, stereo or LCRS encoded Lt/Rt  
signals. This function enables the repurposing of legacy material for newer  
discrete or 5.1 Lt/Rt releases. The post process enhancements enable the  
mixer to expand the sonic quality in addition to the number of channels  
available. Mixers can now make any content fit into their 5.1 or 6.1 mix.  
The SRS CSD-07D Decoder allows the user to monitor in six modes; CS  
Cinema (for mixing and extracting Film and TV content), CS Music (for mixing  
and extracting Music content), CS mono (for extracting mono material to 5.1 or  
6.1), LCRS (for monitoring backwards compatibility to legacy LCRS decoders),  
stereo or mono. This allows the mixer to review the mix in all standard playback  
formats. The seventh mode, Test Mode, cycles pink noise throughout the  
channels for calibration purposes. The SRS CSD-07D is the perfect  
complement to the SRS CSE-07D Encoder.  
3
 
Panel  
Reference)  
4
6
3
5
7
2
1
put Signal Presence Indicators  
nc Source Selector  
5. Monitor Mode Selector  
6. Lt/Rt Mode Selector  
mple Rate Indicator  
7. Output Signal Presence Indicators  
nter Mode Selector  
 
Panel  
Reference)  
4
6
3
5
7
8
2
1
S Pair 4 Output (Cs)  
S Pair 3 Output (Ls/Rs)  
S Pair 2 Output (C/LFE)  
S Pair 1 Output (L/R)  
5. External Sync Input (AES 11)  
6. AES Input (Lt/Rt)  
7. Serial Port  
8. JEDEC Power Connector  
(Auto-switching 100-240VAC, 47-63 Hz)  
 
CSD-07D Set-up:  
Placement and Use:  
Install the CSD-07D in the Lt/Rt monitor bus, and before the signal routing to the speaker  
system.  
To ensure accurate monitoring of the Circle Surround mix, it is recommended that a  
minimum of 5.1 channels be monitored while mixing. Failing to do this may lead to  
consumers hearing something that was overlooked in the mix process. If necessary, it  
is possible to place the unit in Phantom Center mode.  
Like all matrix encoding systems, it is important to maintain the phase and level  
relationships between channels. If for any reason symmetry is not maintained, the  
channel separation will slowly degrade.  
One of the features of the CSD-07D Decoder is the ability to generate a compelling,  
multichannel experience of up to 6.1 channels from any monaural, stereo, Dolby  
Surround, and down-mixed DTS or Dolby Digital® content.  
If you want to create a 5.1 or 6.1 surround mix from an existing mono, stereo or LCRS  
source, route the stereo signal to the CSD-07D and set the decoder in the appropriate  
mode (see Decode Mode on pg. 8).  
The result is an immersive 5.1 or 6.1 channel soundstage from older LCRS, stereo and  
mono content, ready for remix or storage onto multichannel recording formats. Once  
remixed, the multichannel master can then be encoded into a Circle Surround Lt/Rt  
signal. As with all Circle Surround-encoded content, this signal is backwards  
compatible with all existing playback formats from mono to 5.1 channel surround sound  
(i.e. Pro Logic II® and Circle Surround) decoding.  
Power:  
The Circle Surround Decoder comes with an auto-switching power supply and JEDEC  
power connector. It is important that the power supplied is within the appropriate voltage  
range. Failure to do so could result in damage to the unit.  
6
 
7
 
CSD-07D Operation (see front panel image on page 4)  
1. Input Signal Presence:  
Displays signal presence and clip on corresponding  
input channels. When the LEDs glow green on the  
front panel, the corresponding channel is receiving a  
signal > -44 dBFS at the input. If the LED is not  
illuminated, a signal > -44 dBFS is not present. The  
clip indicator LEDs will turn red at 0 dBFS.  
*
Note that if the signal indicator is not illuminated, it may simply indicate a transitory period where no  
content is present in the source mix.  
2. Sync Source Switch:  
Determines the input source for the Sync signal.  
When using the clock within the audio signal, choose  
AES pair 1. When using an external clock source,  
plug the clock input (AES 11) into the External Sync  
XLR in on the back of the unit and select AES 11  
clock. If there is no valid sync on the selected source,  
the corresponding LED will flash.  
3. Center / Phantom Switch: Determines whether the unit outputs a discreet center  
channel or mixes center into left and right. If a center  
channel speaker is not available, select the  
“Phantom” option. If monitoring with a discreet center,  
select the “Center” option. This function works in  
mono monitoring as well.  
4. Sample Rate Indicator:  
Displays the sample rate of the clock source selected  
above. If there is no valid sample rate, no LED will be  
illuminated. If the sample rate is 44.1kHz or 48kHz,  
the corresponding LED will be illuminated.  
5. Monitor Mode:  
Determines how the decoder monitors the incoming  
signal. The orange LEDs next to the modes will  
indicate mode status (See Page 11 for Button  
Function diagram). The five modes are as follows:  
CS Cinema Lt/Rt LED Solid: Press the Monitor Mode  
button until it cycles to Lt/Rt.  
Monitors the mix with Circle Surround Cinema  
decoding. This is ideal for monitoring or extracting TV  
and film content. Use the additional Lt/Rt Mode  
selector (see below) to choose whether the output is  
LCRS, Circle Surround Cinema or Circle Surround  
Discrete compare.  
Stereo Stereo LED Solid: Press the Monitor Mode button  
until it cycles to Stereo.  
8
 
Monitors the incoming matrix encoded mix as stereo.  
Use this setting to confirm backwards compatibility  
with stereo playback devices.  
CS Music Stereo LED Blinking: While in Stereo mode,  
press and hold the Decode Mode button until the LED goes out and  
release. To return to any other mode press and release to cycle  
through to the appropriate mode.  
Monitors the mix with Circle Surround Music decoding.  
This is ideal for monitoring or extracting music content.  
Mono Mono LED Solid: Press the Monitor Mode button  
until it cycles to Mono.  
Monitors the incoming matrix encoded mix as mono.  
Use this setting to confirm backwards compatibility  
with mono playback devices.  
CS Mono Mono LED Blinking: While in Mono mode,  
press and hold the Decode Mode button until the LED goes out and  
release. To return to any other mode press and release to cycle  
through to the appropriate mode.  
Monitors the mono mix with Circle Surround Mono  
decoding. This is ideal for extracting mono music or film  
content.  
Test – In order to enter the test mode, press and hold  
the “Decode Mode” button for one second, then release.  
This mode will generate a pink noise test signal that  
cycles between all channels. Once the sequencer has  
started, it can be paused on a selected channel and  
restarted by pressing and quickly releasing the “Decode  
Mode” button. In order to exit the test mode, press and  
hold the “Decode Mode” button for one second, then  
release. By functioning in this way, accidental entry into  
the test mode is minimized.  
6. Lt/Rt Mode Selector:  
Determines the surround output mode (See Page 11  
for Button Function diagram).  
CS Cinema Lt/Rt LED Solid: Press the Lt/Rt Mode  
button until it cycles to Circle Surround.  
Allows the mixer to monitor TV or film content in  
6.1 surround.  
CS Discrete Compare Function Circle  
Surround LED Blinking: While in CS Cinema, Music  
or Mono mode, press and hold the Lt/Rt Mode button for one  
second and release. To exit CS Discrete Compare, press  
and hold the Lt/Rt Mode button for one second, then release.  
Allows the mixer to monitor CS content in 5.1 or  
6.1 surround with adjusted calibration (L and R -2  
dB and surrounds -6 dB). This emulates the  
9
 
discrete by removing the consumer system  
compensation adjustments. This also closely  
emulates PLII without any of the dimension,  
panorama and spread settings enabled.  
LCRS LCRS LED Solid: Press the Lt/Rt Mode button  
until it cycles to LCRS.  
Emulates the performance of older four channel  
surround receivers.  
7. Output Signal Presence:  
Displays signal presence and clip on corresponding  
output channels. When the LEDs glow green on the  
front panel, the corresponding channel is outputting a  
signal > -44 dBFS at the input. If the LED is not  
illuminated, a signal > -44 dBFS is not present. The  
clip indicator LEDs will turn red at 0 dBFS.  
Note that if the signal indicator is not illuminated, it may simply indicate a transitory  
period where no content is present in the source mix.  
10  
 
Monitor Mode  
Button Flow  
Power Up  
CS Cinema Mode  
Long  
Press Lt/  
Rt LED  
on  
Short  
Press  
A
Test Mode  
Channel  
Sequence  
Stereo Monitor  
Mode  
Long  
Press  
Stereo  
LED off  
Short  
Press  
Long  
Press  
CS Music Mode  
(Stereo LED  
blinks)  
Channel Hold  
Long  
Press  
Stereo  
LED on  
Long  
Press  
Stereo  
LED off  
Short  
Press  
Long  
Press  
Short  
Press  
A
Mono Monitor  
Mode  
Long  
Press  
Mono  
LED off  
CS Mono Mode  
(Mono LED blinks)  
Long  
Press  
Stereo  
LED on  
Long  
Press  
Stereo  
LED off  
Short  
Press  
A
11  
 
Lt/Rt Mode  
Button Flow  
CS Music Mode  
(Stereo LED  
blinks)  
CS Mono Mode  
(Mono LED blinks)  
CS Cinema Mode  
Short  
Press  
Key  
LCRS Mode  
Short Press  
Long Press LED on  
Long Press LED off  
=
=
=
<1 second  
2 seconds  
>4 seconds  
Decode  
Mode  
Button  
Short  
Press  
Lt/Rt  
Mode  
Button  
CS Playback  
(previous state)  
Short  
Press  
Mode State  
12  
 
Specifications  
Frequency Response:  
20 Hz – 20 kHz (L, C, R, Rs, Cs, Ls);  
20 Hz to 80 Hz (LFE)  
Inputs (Digital only):  
1 balanced XLR (Lt/Rt); input level per AES3 standards  
Input Impedance:  
Outputs:  
110  
4 balanced XLRs (L/R, C/LFE, Ls/Rs, Cs); output levels  
per AES3 standards  
Output Impedance:  
Sample Rates:  
110 Ω  
44.1 kHz or 48 kHz (locked to input sync source sample  
frequency)  
Decoding Latency:  
Processing:  
<8.2 ms  
SRS – Circle Surround II Decoding algorithm with multi-  
band steering on ADI DSP  
Front Panel Indicators/Controls:  
Input signal presence @ -44 dBFS (1 LED per  
channel); Clip indicator @ 0 dBFS  
Sync Source Selector – AES Pair 1/AES11 Clock &  
status LEDs  
Sample Rate Indicator – 44.1kHz/48kHZ status LEDs  
Center Mode Selector – Discrete/Phantom & status LEDs  
Monitor mode selector – Lt/Rt (CS Cinema, CS  
Discrete Compare and LCRS switching using Lt/Rt  
selector below), Stereo (Stereo and CS Music), Mono  
(Mono and CS Mono) and Test (Pink noise cycled  
through channels @ -10 dBV) & status LEDs  
Lt/Rt Mode Selector – LCRS / Circle Surround Cinema  
/ Circle Surround Discrete Compare & status LEDs  
Output signal presence @ -44 dBFS (1 LED per  
channel); Clip indicator @ 0 dBFS  
Power Requirements:  
Power Consumption:  
Dimensions:  
Auto-switching 100-240VAC, 47-63 Hz  
8 W  
Rack mount; 1 ru (1.75” x 19” x 12”)  
5 lbs. 7 oz.  
Weight:  
Recommended Cable:  
Double Shielded (Foil/Braid) AES/EBU cable. Nominal  
impedance 110 (Ex. Belden 1696A)  
Note: 0 dBu = 0.775 Vrms  
(Specifications subject to change without notice)  
13  
 
2909 Daimler Street  
Santa Ana, CA 92705  
Tel: (949) 442-1070  
Fax: (949) 442-1484  
For questions regarding use and operation of the Circle Surround  
Decoder please call or e-mail: [email protected]  
For business and pricing inquiries please call or e-mail:  
© 2005 SRS Labs, Inc. All Rights Reserved. No part of this publication may be  
reproduced, transmitted, transcribed, stored in a retrieval system, or translated into  
any human or computer language, in any form or by any means whatsoever, without  
express written consent from SRS Labs, Inc.  
,
,
and Circle Surround are registered trademarks of SRS Labs, Inc.  
This product is covered under U.S. Patent Numbers 5,319,713; 5,333,201;  
5,638,452; 5,771,295; 6,198,827; 6,285,767; 5,850,453 and other U.S. and  
International patents pending.  
14  
 
SRS Labs, Inc. hereby warrants to the original purchaser of this product that it is free of manufacturing  
defects in material workmanship.  
a. Parts: For ONE-YEAR from date of original purchase at retail, we will repair or replace, at our  
option, any defective part without charge for the part. Parts used for replacement are  
warranted for the remainder of the original warranty.  
b. Labor: For ONE-YEAR from the date of original purchase at retail, SRS Labs, Inc. will provide  
the labor for warranty repair without charge at the SRS Labs, Inc. corporate office or at any  
SRS Labs, Inc. authorized Service Center.  
1. This warranty is void if the unit’s serial number has been altered or removed. This warranty does not  
cover defects or damage caused by:  
a. Abuse, modification, mishandling, accident, alteration repair or service by anyone other than  
an authorized SRS Labs, Inc. Service Center.  
b. Physical abuse to or misuse of the unit.  
c. Operation in a manner contrary to the instructions, which accompany the unit.  
d. Freight damage, improper installation or application, the malfunction of another component or  
device with which the product interfaces or any damage caused by acts of God such as  
lightning or fluctuations in electrical power.  
2. Any express warranty not provided herein, and any other which, but for this provision, might  
arise by implication or operation of law, is hereby excluded and disclaimed. There are no other  
warranties, expressed or implied, including the implied warranty of fitness for a particular  
purpose. If applicable law does not permit SRS Labs, Inc. to disclaim implied warranties, any  
warranties implied by law are limited to the ONE-YEAR term of the express warranty given  
herein.  
3. The sole and exclusive remedy under this warranty is repair or replacement at SRS Labs, Inc.’s option  
of any product that proves to be defective in manufacture or material within ONE-YEAR warranty period.  
To the fullest extent allowed by law, SRS Labs, Inc. disclaims all liability for other direct, incidental or  
consequential damages alleged to be caused by a defective product; that is, SRS Labs, Inc. will not be  
responsible for any personal injury, property damage (other than the cost of replacing the product) or  
any other monetary damage such as lost wages or profits caused by any use, attempted use or inability  
to use the product.  
4. This warranty gives you specific legal rights and you may also have other rights, which vary from  
State to State.  
5. To obtain warranty service, contact the SRS Labs, Inc. Corporate Office at 800-2HEAR3D or at  
www.SRSLABS.com or your nearest authorized SRS Labs, Inc. Service Center to obtain a return  
authorization number. All shipping charges must be prepaid. If the requested repair or service (including  
parts replacement) is within the terms of this warranty, SRS Labs, Inc. will pay return shipping charges  
only within the United States and Canada. Present your sales receipt or other document, which  
establishes proof and date of purchase. Returned products must be accompanied by written description  
of the reason for the return and the circumstances under which the defect became apparent. The return  
of the owner registration card is not a condition of warranty coverage.  
6. BEFORE REQUESTING SERVICE, please review the instruction manual to insure proper installation  
and correct customer control adjustment. If the problem persists, contact your nearest SRS Labs, Inc.  
dealer for the name(s) of authorized SRS Labs, Inc. Service Center(s). If you are unable to obtain this  
information, please call 1-800-2HEAR3D (800-243-2733).  
7. The warranty for your product can be registered online at www.srslabs.com/warranty.asp  
15  
 

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