1
SEQ-1
Issue 2
(540) 427-3505
SEQ-1
SEVEN BAND EQUALIZER
INTRODUCTION
These instructions contain the specifications and
information necessary to install, operate, and
maintain the SEQ-1, Seven Band Equalizer,
manufactured by Clarity, 1111 Industry Avenue,
Roanoke, VA 24013.
SPECIFICATIONS
Features
•
7 active filters
•
Modified 1 octave equalization
•
+ 12 dB boost or cut
•
Constant Q equalization
•
Rocker-type power switch
•
Power "ON" indicator
•
Bypass switch to remove EQ from circuit
(slide type)
•
High impedance output
•
Line output
Nominal Specifications
•
Type of Inputs:
Hi impedance 10K ohms (unbalanced)
Stereo HiZ 10K ohms (unbalanced)
•
Type of Outputs:
Line (balanced)
Hi impedance 10K ohms (unbalanced)
•
Frequency Response: 35 Hz -20 kHz +1dB
•
Distortion:
< 0.3%
•
Frequency Centers:
Band 1 = 60 Hz
2 = 200 Hz
3 = 560 Hz
4 = 1100 Hz
5 = 2200 Hz
6 = 4500 Hz
7 =10000Hz
Power Requirements
•
-24 VDC
•
150 mA
Dimensions
•
8.6"W x 3.5"H x 5.5"D
(21.8cm W x 8.9cm H x 14.0cm D)
Environment
•
Temperature:
0 to 50 Degrees C
•
Humidity:
0-85% non-precipitating
OPERATION
The SEQ-1 is used to boost or attenuate specific
frequencies to improve voice intelligibility or
attenuate frequencies to help reduce feedback. The
unit can also be used to modify the frequency
response of speakers.
A "POWER" switch, "POWER" indicating LED, 7
slide controls (1 for each of the bands), and "EQ"
bypass switch are located on the front of the unit.
The frequencies boost/cut (1 to 12 dB), are modified
with each filter's slide control. The manual "EQ"
bypass switch allows comparison of before
equalization, and after effect, in the area being
equalized. All frequency adjustments are bypassed
when the "EQ IN/OUT" switch is in the "OUT"
position.
INSTALLATION
The SEQ-1 was designed for shelf or rack mounting
(two units can be mounted side by side in a 19"
equipment rack - rack mounting requires the SEQ-
RMK rack mount kit).
Connections are accomplished utilizing (3) phono
jacks (2 input, 1 output) and/or (9) screw terminals.
Only qualified service personnel should install the
SEQ-1. See Figures 1 and 2 for actual connections.
All connections should be made and double checked
before DC power is supplied to the unit.
947447
