®
Circle Surround Encoder
USER’S MANUAL
Model CSE07 www.srslabs.com
This product is manufactured by SRS Labs, Inc.
man100.V20703
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 his 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 leading provider of advanced technology
solutions. SRS Labs develops audio, voice and speaker
technologies and licenses these patented technologies to
electronics manufacturers throughout the world. SRS Labs'
technologies are featured in over 250 million of the finest
home theater and audio products, computer and Internet
applications, and portable audio devices. SRS Labs also
utilizes their broad technology portfolio to specifically
address the needs of traditional television and cable
broadcasting, as well as Internet streaming, on-demand
material and online radio in hardware and software products.
2
Introduction
The SRS CSE-07 Circle Surround® 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) for transmission via any two-channel medium, such as
broadcast television or radio (including digital) or two-channel Internet streams. Circle
Surround encoded material can also be stored for playback over two-channel mediums
such as VHS, PC and console games, DVDs and CDs.
Based on an SRS patented 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 192 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-07 to be the most flexible and
powerful encoding solution available.
Surpassing the limitations of previous matrix encoders, the CSE-07 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-07 Circle Surround Decoder is the perfect
compliment to the SRS CSE-07 Encoder for professional studio environments. It offers
Circle Surround decoding and features two proprietary SRS post processing technologies –
TM
SRS Dialog Clarity
Enhancement and SRS TruBass®.
3
Front Panel
(Quick Reference)
2
4
5 6
3
1
4
1. Power 4. Bass Manage Mode Button and LED
2. Power indicator LED 5. Output Signal Level Meters
3. Input Signal Presence Indicators 6. Output Signal Clip Indicator
Rear Panel
(Quick Reference)
10
9
8
7
6
5
4
3
2
1
5
1. LFE Input 6. Center Input
2. Left Surround Input 7. Left Input
3. Center Surround Input 8. Right Total Output
4. Right Surround Input 9. Left Total Output
5. Right Input 10. JEDEC Power Connector (switchable from 110V to 220V)
CSE-07 Set-up:
Placement and Use:
The CSE-07 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-07 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-07 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-07 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-07 encoder.
For best results when monitoring the encoding process, use the CSD-07 Circle
Surround Decoder from SRS Labs.
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 a manually switching power supply and
JEDEC Power Connector. It is important that the rear voltage selector is set to
the appropriate voltage. Failure to do so could result in damage to the unit.
6
7
7
CSE-07 Operation (see front panel image on page 4)
1. Power: When the box is powered off or unplugged, a hard relay
bypass is triggered to prevent disruption of the signal
on the left and right inputs.
2. LED Power indicator: Displays whether or not the unit is turned on and receiving
power. If the unit is powered on, the LED will glow green.
3. Input Signal Presence: Displays signal presence & clip on corresponding input
channels. When the LEDs glow green on the front
panel, the corresponding channel is receiving a signal >
-25 dBu at the input. If the LED is not illuminated, a
signal > -25 dBu is not present. The clip indicator LEDs
will turn red at +22 dBu. (Actual clip occurs at +24 dBu)
* Note: If the signal indicator is not illuminated, it may simply indicate a
transitory period where no content is present in the source mix.
4. 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,C,R,RS,CS,LS) will
go through a 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 before the LED turns red, then the unit
will toggle out of Bass Management mode.
* Note: This button will also 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 Bass Manage 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
remain in the current Bass Manage Mode. Once the unit is in
test mode, pink noise will cycle through the channels.
Pausing test cycle: press and release the Bass Manage 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 Bass Manage button for
one second, then release.
5. Output Signal Level: Indicates the strength of the outgoing signal.
6. Output Signal Clip: The clip indicator LEDs will turn red at +22 dBu.
(Actual clip occurs at +24 dBu)
8
Specifications
Frequency Response: 20 Hz – 20 kHz +/- 1 dB (L, C, R, RS, CS, LS);
20 Hz to 60 Hz (LFE)
Dynamic Range: > 120 dB typical (A-weighted)
Distortion (THD): < .005% THD typical (A-weighted) at max level
Inputs: 7 balanced XLRs (Pin 2 "hot" per AES Standards);
+4 dBu nominal input level; +24 dBu maximum input level
Input Impedance: 20 kΩ
Outputs: 2 balanced XLRs (Pin 2 "hot" per AES Standards);
+4 dBu nominal output level; +24 dBu maximum output level
Output Impedance: 150 Ω
A-D Conversion: 24 bits
D-A Conversion: 24 bits
Sample frequency: Fixed at 48 kHz
Encoder Processing Latency: 11.3 ms
Processing: SRS – CSII
TM
encoding algorithm with multi-band
steering on ADI DSP
Front Panel Indicators/Controls:
Power
Input signal presence @ -25 dBu (1 LED per channel);
Clip indicator @ +22 dBu (actual clip @ +24dBu)
Bass Manage Mode
Output signal level (11 LEDs per channel); 3 dB steps
with clip indicator @ +22 dBu (actual clip @ +24dBu)
Power Requirements: Manual switching 110/220 VAC, 60/50 Hz
Power Consumption: 25 W
Dimensions: Rack mount; 1 ru (1.75” x 19” x 12”)
Weight: 7 lbs. 14 oz.
Optional Equipment: SRS CSD-07 Decoder for monitoring
Note: 0 dBu = 0.775 Vrms
(Specifications subject to change without notice)
9
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
Encoder please call or e-mail: prosupport@srslabs.com
For business and pricing inquiries please call or e-mail:
prosales@srslabs.com.
© 2003 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.
, , , Dialog Clarity, TruBass, 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.
10
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
11
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