SEQ 301
Operation Manual
S Y S TE MES
10074 SW Arctic Drive Beaverton, OR 97005 503-641-7287
SEQ301
TABLE OF CONTENTS
Front Panel Features
Rear Panel Features
Specifications
Block Diagram
Warranty
pg. 2
pg. 3
pg. 4
pg. 5
INTRODUCTION
The ADVANTAGE” SEQ301 is a two rack space, 30-band, 1/3 octave graphic
equalizer. The SEQ301 uses Contant-Q technology to guarantee more precise
room tuning with less filter interaction, better filter combining characteristics,
and constant filter bandwidth at any setting. These benefits, combined with
accurate front panel representation of the EQ curve, make equalization an
easier, more intuitive process, The SEQ301 carries a five-year warranty.
SEQ301 features include:
+ 1/3-octave 30-band graphic equalizer (25Hz~20kHz)
+ +12dB filter control cut and boost gain range
+ +12dB master level control gain range
+ +15dBu peak LED indicates 9dB of headroom
+ high-pass filter switch (18dB/octave @ 20Hz)
+ adjustable low-pass filter (18dB/octave @ 3kHz~37kHz)
¢ equalization bypass switch for comparison to flat signal
¢ balanced input and output on plug-in barrier strips
+ RFlfiltering for protection from radio interference
+ FET output muting to prevent turn on/off transients
+ Constant-Q filter design for more precise equalization
+ incorporates AES recommended grounding practices
+ CE marked and UL / C-UL listed power source
4 covered by Five-Year ‘Gold Seal Warranty
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After reading this manual, if you have any questions or need technical
assistance, please call Biamp Systems toll-free 1-800-826-1457.
TG
FRONT PANEL FEATURES
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Filter Controls: These 30 slide controls adjust the gain in each
of the filter bands (25Hz-20kHz). Each control has a range of
+12dB boost/cut, with a center detent (flat),
Master Gain Control: This slide controls adjust the overall gain
of the equalizer only when the EQ Bypass Switch (see below) is
depressed. It has a range of £12dB. Use this control to
compensate for changes in gain due to filter adjustments.
LPF Frequency Adjust: This screwdriver adjustable control
varies the cutoff frequency of the output low-pass filter from
3kHz to 37kHz. |
LPF In/Out Switch: This switch inserts an 18dB/octave low-
pass filter at the output of the equalizer.
HPF In/Out Switch: This switch inserts an 18dB/octave high-
pass filter at the output of the equalizer. The cutoff frequency is
20Hz. Use the high-pass filter to eliminate subsonic frequencies
which waste amplifier power and may damage speakers,
EQ In/Out Switch: This switch enables or disables the graphic
equalizer filter controls and the master gain control. The LPF &
HPF are independent of this switch. Use the EQ In/Out Switch
to compare equalized signal to un-equalized signal.
Power On Indicator: This red LED indicates that power is
applied to the unit.
Peak Indicator: This red LED indicates that signal levels at the
equalizer output have reached +15dB (9dB below clipping).
When the Peak Indicator lights, lower the Master Gain Control
or reduce input signal level.
REAR PANEL FEATURES
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AC Power Cord: The external power transformer provides 27
Volts AC to the equalizer, and is detachable via a 5-pin DIN
connector, The equalizer has two internal ‘self-resetting’ fuses
(there are no user servicable parts inside the unit). If the
internal fuses blow, they will attempt to re-set after a short
period. However, this may be an indication that the equalizer
requires service.
Output: This plug-in barrier strip connector provides balanced
output from the equalizer. For unbalanced output, connect to
the Output with high to (+) and ground to (v), leaving (-)
unconnected. Signal levels will be reduced by 6dB when the
Output is unbalanced.
Input: This plug-in barrier strip connector provides balanced
input to the equalizer. For unbalanced input, connect to the
Input with high to (+) and ground to both (-) & (y).
SPECIFICATIONS
Frequency Response (20Hz-20kHz @ +4dBu): a +0/-0.5dB
Total Harmonic Distortion + Noise (20Hz-20kHz @ +4dBu): < 0.008%
Intermodulation Distortion (SMPTE): < 0.008%
Hum & Noise (20Hz-20kHz @ unity gain w/ filters flat): -82dBu
Dynamic Range (20Hz-20kH2): 103dB
Maximum Input Level: +24dBu
Input Impedance (balanced): 20k ohms
Maximum Output (600 ohm load): +21dBm
Output Impedance (balanced): 200 ohms
High-Pass Filter (18dB/octave): 20Hz
Low-Pass Filter (18dB/octave): 3kHz-37kHz
Power Consumption: < 10 Watts
Power Requirements: 115/230VAC 50/60Hz
Dimensions: |
Height (2 rack spaces) 3.5" (89mm)
Width 19" (483mm)
Depth 7.25" (184mm)
Weight: 7 lbs. (3.18kg)
BLOCK DIAGRAM
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SEQ301 Block Diagram
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WARRANTY
BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR
LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE
PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL.
BIAMP Systems expressly warrants this product to be
free from defects in material and workmanship for a
period of 5 YEARS from the date of purchase as a
new product from an authorized BIAMP Systems
dealer under the following conditions.
1. The Purchaser is responsible for completing and
mailing to BIAMP Systems, within 10 days of
purchase, the attached warranty application.
2. In the event the warranted BIAMP Systems product
requires service during the warranty period, BIAMP
Systems will repair or replace, at its option, defective
materials, provided you have identified yourself as the
original purchaser of the product to any authorized
BIAMP Systems Service Center. Transportation and
Insurance charges to and from an authorized Service
Center or the BIAMP Systems factory for warranted
products or components thereof to obtain repairs shall
be the responsibility of the purchaser.
3. This warranty will be VOIDED if the serial number
has been removed or defaced; or if the product has
been subjected to accidental damage, abuse, rental
usage, alterations, or attempted repair by any person
not authorized by BIAMP Systems to make repairs; or
if the product has been installed contrary to BIAMP
Systems's recommendations.
4. Electro-mechanical fans, electrolytic capacitors,
and the normal wear and tear of appearance items
such as paint, knobs, handles, and covers are not
covered under this warranty.
5. BIAMP SYSTEMS SHALL NOT IN ANY EVENT BE
LIABLE FOR SPECIAL, INCIDENTAL, OR
CONSEQUENTIAL DAMAGES, INCLUDING LOST
PROFITS, LOSS OF USE, PROPERTY DAMAGE,
INJURY TO GOODWILL, OR OTHER ECONOMIC LOSS
OF ANY SORT. EXCEPT AS EXPRESSLY PROVIDED
HEREIN, BIAMP SYSTEMS DISCLAIMS ALL OTHER
LIABILITY TO PURCHASER OR ANY OTHER PERSONS
ARISING OUT OF USE OR PERFORMANCE OF THE
PRODUCT, INCLUDING LIABILITY FOR NEGLIGENCE
OR STRICT LIABILITY IN TORT.
6. THIS WARRANTY IS IN LIEU OF ALL OTHER
WARRANTIES EXPRESSED OR IMPLIED. BIAMP
SYSTEMS EXPRESSLY DISCLAIMS ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE. THE REMEDIES SET
FORTH HEREIN SHALL BE THE PURCHASER'S SOLE
AND EXCLUSIVE REMEDIES WITH RESPECT TO ANY
DEFECTIVE PRODUCT. THE AGENTS, EMPLOYEES,
DISTRIBUTORS, AND DEALERS OF BIAMP SYSTEMS
ARE NOT AUTHORIZED TO MODIFY THIS WARRANTY
OR TO MAKE ADDITIONAL WARRANTIES BINDING ON
BIAMP SYSTEMS. ~~ ACCORDINGLY, ADDITIONAL
STATEMENTS SUCH AS DEALER ADVERTISEMENTS
OR REPRESENTATIONS DO NOT CONSTITUTE
WARRANTIES BY BIAMP SYSTEMS.
7. No action for breach of this warranty may be
commenced more than one year after the expiration of this
warranty.
Thank you for purchasing BIAMP SYSTEMS...
AMERICAN SOUND CRAFTSMANSHIP
Biamp Systems
10074 S.W. Arctic Drive
Beaverton, Oregon 97005 USA
(503) 641-7287
http://www.biamp.com
585.0138.00
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