“Q” Range Q = 0.4 to 4.0 Adjustable on middle ranges
Q = 1.0 Fixed on low & high ranges
Maximum Output Level > + 28 dBu
Maximum Input Level (EQ Flat) + 28 dBu
Maximum Input Level (EQ Full Boost) + 17 dBu
Frequency Response +0/-3 dB <2 Hz to >300 kHz
Frequency Response, Stereo Deviation < .15 dB
Noise (All EQ Stages In, Controls Flat) -106 dBu
Maximum Boost (21 Step Detented) +20 dB
+10 dB with range switch in
Maximum Cut (21 Step Detented) -20 dB
-10 dB with range switch in
EQ Frequencies
Low Range Switch (Centers - Peak/Shelf Selectable):
20, 34, 56, 100, 180, 270
Low Mid Sweep:
20 Hz - 220 Hz or 200 Hz - 2.2 kHz.
10X Range switch selectable.
Hi Mid Sweep:
250 Hz - 2.5 kHz or 2.5 kHz - 25 kHz.
10X Range switch selectable.
High Range Switch (Centers - Peak/Shelf Selectable)
4.8 k, 5.8 k, 8.0 k, 10 k, 16 k, 21 k
THD + Noise 20 Hz - 30 kHz < .009%
typ < .003 %
CMRR > 60 dB
Typ > 80 dB
Slew Rate > 50 volts per microsecond
Main Hard-wire Bypass Switch For Each Channel? Yes
Peak/Shelf Selection On High & Low Range? Yes
Hard-wire Bypass Switching On Individual EQ Bands? Yes
Input Impedance 25 kilohms
Minimum Output Load Impedance 50 ohms
Recommended Load > 500 ohms
Output Impedance 5 ohms
EQ Amplifiers Pure Class-A Discrete J-FETs