SRS Labs CSE-07D User manual

Circle Surround Digital Encoder
®
USER’S MANUAL
Model CSE-07D www.srslabs.com
This product is manufactured by SRS Labs, Inc.
P00192 V2.0
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IMPORTANT SAFETY INSTRUCTIONS:
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any of the ventilation openings. Install in accordance with the manufacturers
instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two
blades with one wider than the other. A grounding type plug has two blades and a third grounding
prong. The wide blade or the third prong are provided for your safety. When the provided plug
does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with a cart, stand, tripod, bracket or table specified by the manufacturer, or sold with the
apparatus. When a cart is used, use caution when moving the cart/apparatus combination to
avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus is
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does
not operate normally, or has been dropped.
The lightning flash with arrowhead symbol is intended to
alert the user to the presence of uninsulated “dangerous
voltage” within the product’s enclosure that may be of
sufficient magnitude to constitute a risk to persons.
The exclamation point, within an equilateral triangle, is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
WARNING: This equipment has been tested and found to comply with the limits for Class A digital device
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance
with the instruction's manual, may cause interference to radio communications. Operation of this
equipment in a residential area is likely to cause interference in which case the user will be required to
correct the interference at their own expense. The user is cautioned that changes and modifications
made to the equipment without approval of the manufacturer could void the user's authority to operate
this equipment.
It is suggested that the user use only shielded and grounded cables to ensure compliance with FCC
Rules.

Contents:
Company Information 2
Introduction 3
Front Panel 4
Rear Panel 5
CSE Setup 6
Placement Diagram 7
CSE Operation 8
Specifications 9
Technical Support 10
Warranty Information 11
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.
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3
Introduction
The SRS CSE-07D Circle Surround®Digital Encoder enables audio professionals to
encode up to 6.1 channels of discrete program material (Left, Center, Right, Right
Surround, Center Surround, Left Surround, LFE). 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.
Based on an SRS patented advanced matrix system, Circle Surround encoded Lt/Rt
material is incredibly robust and suitable for either analog or digital distribution. It supports
quality bit rates as low as 40 kbps and delivers compelling home-theater audio performance
at compression rates of 96 kbps and above. Circle Surround is also compatible with a
variety of codecs and compression schemes. Sound designers, mixers and facilities
creating multichannel audio content will find the CSE-07D to be the most flexible and
powerful encoding solution available.
Surpassing the limitations of previous matrix encoders, the CSE-07D Circle Surround Encoder
supports current multichannel material, accepting up to 6.1 channels of discrete audio input for
two-channel Lt/Rt encoding. Circle Surround also provides the unique ability to localize specific
broadband audio signals in the Left or Right surround channel as individual sound sources.
Previous matrix encoders only allow for the encoding of Left, Center, Right and mono,
bandwidth limited, surround channels. Circle Surround now provides the capability to encode
Left, Center, Right, Right Surround, Center Surround, Left Surround and LFE channels. This
major breakthrough in matrix technology raises the potential for audio on all platforms – music,
film, television, games and Internet streaming.
Circle Surround encoded material is backwards compatible with all existing playback formats
from mono to 5.1 channel surround sound (i.e. Circle Surround 5.1 and Pro Logic II®)
decoding. Optimal performance, however, is achieved with a Circle Surround II decoder.
For monitoring purposes, the SRS CSD-07D Circle Surround Digital Decoder is the perfect
compliment to the SRS CSE-07D Encoder for professional studio environments. In
addition, the CSE-07D has two channels of analog outputs for backwards compatibility with
analog decoders such as the CSD-07.

Front Panel
(Quick Reference)
5 6 7
4
3
2
1 8
1. Input Signal Presence Indicators 5. Bass Manage Mode Button and LED
2. Sample Rate LEDs 6. Test Mode Button and LED
3. Sync Source Button and LED 7. Output Signal Level Meters
4. AES Status LEDs 8. Output Signal Clip Indicator

Rear Panel
(Quick Reference)
2
1 10
9
8
7
6
5
4
3
1. Pair 4 (Cs) Input 6. Digital (Lt/Rt) Output
2. Pair 3 (Ls/Rs) Input 7. Serial port
3. Pair 2 (C/LFE) Input 8. Analog Right Total Output
4. Pair 1 (L/R) Input 9. Analog Left Total Output
5. External Sync Input 10. JEDEC Power Connector (Auto-switching 100-240VAC, 47-63 Hz)

6
CSE-07D Set-up:
Placement and Use:
The CSE-07D encoder is designed to take the stems from your surround mix and
pass them onto a recording or broadcast device matrixed into a left total and right
total stereo signal.
Install the CSE-07D after your mixing console, and before your monitoring device,
recording device or transmission path.
The inputs to the Circle Surround encoder may be used on an as-needed basis. If
you are creating an original surround mix, you may feed the CSE-07D encoder
from a 7-channel buss, with one of the channels dedicated for low frequency
effects. It is not mandatory for all inputs to be used for surround encoding. The
CSE-07D will pass through mono or stereo inputs, or a four, five or six-channel
mix with an LFE channel. (See diagram on page 7)
If you are re-mastering existing source material with one to 6.1 stems, simply
match the outputs of your source to the corresponding channel-inputs on the
CSE-07D encoder.
For best results when monitoring the encoding process, use the CSD-07 Circle
Surround Decoder or CSD-07D Circle Surround Digital Decoder from SRS Labs.
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.
Power:
The Circle Surround Encoder 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.

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8
CSE-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. Sample Rate LEDs: Indicates the sample rate of the Master sync source.
3. Sync Source Button: Selects whether the sync source is AES Pair 1 or the AES 11
clock inserted in the external clock input.
4. AES Status LEDs: There is an AES status Indicator per channel pair. If an LED is not
illuminated, then the pair is not locked. If the LED is solidly
illuminated, then the Channel pair is locked. If the LED is flashing,
then the Channel pair sample rate does not match the master.
5. Bass Manage Mode: This mode is used to enable or disable the Bass Management
function. When the box is powered up, it is placed in Bass
Manage mode with the LED indicator green. While Bass
Management is on, any information that enters the satellite
channels (L, R, C, LS, RS, CS) will go through an 80 Hz high-
pass filter. Any information that goes through the LFE will go
through a corresponding low pass filter. If the switch is
pressed and released, then the unit will toggle out of Bass
Management mode.
6. Test Mode Button: This button will generate a pink noise test signal to ensure
accurate channel routing during transmission. Though the
encoder outputs only two channels, a Circle Surround Lt/Rt test
signal is generated. Due to the fact that this signal is in the
transmission path, a special button sequence is required to avoid
accidentally entering test mode during broadcasting or recording.
Entering test mode: press and hold the Test Mode button until
it glows red. Once it glows red, release the button. The unit is
now in test mode. The LED will only glow red for a few
seconds. If the button is released while the LED is not red, the
unit will not enter test mode. Once the unit is in test mode,
pink noise will cycle through the channels.
Pausing test cycle: press and release the Test Mode button
briefly to pause on the desired channel. Press and release
the button again to restart the cycle.
Exiting test mode: press and hold the Test Mode button for
three seconds, then release.
7. Output Signal Level: Indicates the strength of the outgoing signal.
8. Output Signal Clip: The LED will turn red at 0 dBFS (+24 dBu for the analog output).

9
Specifications
Frequency Response: 20 Hz – 20 kHz (+/- 1 dB for analog out) (L, R, C, Ls, Rs,
Cs, Ls); 20 Hz to 80 Hz (LFE)
Inputs (digital only): 4 balanced XLRs (L/R, C/LFE, Ls/Rs, Cs); input level per
AES3 standards
Input Impedance: 110 Ω
Digital Outputs: 1 balanced XLR (Lt/Rt); output level per AES3 standards
Digital Output Impedance: 110 Ω
Analog Outputs: 2 balanced XLR (Lt & Rt) @ +4 dBu nominal output level;
+24 dBu maximum output level; pin 2 hot per AES3 standards
Analog Output impedance: 50 Ω
Dynamic Range (Analog out): >110 dB Typical (A-weighted)
Distortion (THD) (Analog out): <.005% THD Typical (A-weighted) at maximum level
D-A Conversion: 24 bits
Sample Rates: 44.1 kHz or 48 kHz (locked to input sync source sample
frequency)
Encoding Latency: <8.2 ms
Processing: SRS – Circle Surround II Encoding algorithm on ADI DSP
 Input signal presence @ -44 dBFS (1 LED per
channel); Clip indicator @ 0 dBFS
Front Panel Indicators/Controls:
 Sync Source Selector – AES Pair 1/AES11 Clock &
status LEDs
 Sample Rate Indicator – 44.1kHz/48kHZ status LEDs
 AES Status Indicator – L/R, C/LFE, Ls/Rs, & Cs status
LEDs
 Bass Manage Mode selector – Bass Manage Mode
button & status LED
 Test Mode Selector – Test Mode button & status LED
(Cycles encoded pink noise through all channels at
-10dBV to be decoded by the CSD-07 or CSD-07D)
 Output Signal Level meters (11 LEDs per channel); 3
dB steps with clip indicator @ 0 dBFS (+24 dBu Analog)
Power Requirements: Auto-switching 100-240VAC, 47-63 Hz
Power Consumption: 8 W
Dimensions: Rack mount; 1 ru (1.75” x 19” x 12”)
Weight: 5 lbs. 10 oz.
Optional Equipment: SRS CSD-07 or SRS CSD-07D Decoder for monitoring
Recommended Cable: Double Shielded (Foil/Braid) AES/EBU cable. Nominal
impedance 110 Ω(Ex. Belden 1696A)
Note: 0 dBu = 0.775 Vrms
(Specifications subject to change without notice)

10
2909 Daimler Street
Santa Ana, CA 92705
Tel: [phone]
Fax: [phone]
For questions regarding use and operation of the Circle Surround
Encoder please call or e-mail: [email protected]
For business and pricing inquiries please call or e-mail:
[email protected].
© 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 and other U.S. and International patents pending.

11
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