The Dual Stereo Return Module; Input Section; Equalizer Section - D&R CinemIX Owner's Manual

THE DUAL STEREO RETURN
MODULE
4.0
Cinemix's Dual Stereo Module is one of the most comprehensive products the
D&R design team has developed yet. Two completely separate stereo modules
(four inputs) are fitted on the same metal strip. Although designed for effects
returns, this module can be used for stereo keyboards, drum machines, stereo
tape machines, or any other device needing both inputs on one fader.
The maximum number of stereo input modules both frames can accept
is 5. These five stereo modules are normalled to signal processor
outputs in the patchbay.

4.1 Input section

The input section consists of two stereo gain controls. The gain control
is a concentric dual pot (with two knobs) used to adjust the gain of two
line amps, stereo A and stereo B.
The adjustment range is from -20dB to +20dB.
The Mono A and Mono B switches summ the left right signals.

4.2 Equalizer section

The D&R design team opted for a four band fixed frequency equalizer
on the STEREO B input path. The selected frequencies produced the
most musical sounding results.
HF 10kHz
The HF (high frequency) section has shelving characteristics with a
boost or cut of 16dB at a fixed frequency of 10kHz.
HMF 5kHz
The HMF (high mid frequency) section has bell curve characteristics
with a boost or cut of 16dB at a fixed frequency of 5kHz.
LMF 250Hz
The LMF (low mid frequency) section has bell curve characteristics
with a boost or cut of 16dB. This band has a fixed frequency of
250 Hz.
LF 60Hz
The LF (low frequency) section has shelving characteristics with a boost
or cut of 16dB at a fixed frequency of 60Hz.
All level controls are center detented making neutral positions easy to
establish. All frequency ranges have been carefully selected following
extensive examination of all types of music (and noise). Test
comparisons of other equalizers helped the D&R design team create an
equalizer that sounds very musical , but at the same time, raising the
standard in specs and sound quality. Noise and distortion are kept to an
absolute minimum.
A High Pass Filter in / out switch is fitted to roll off the low
frequencies at 100 Hertz.
An equalizer on-off switch is fitted to allow easy comparisons.
Cinemix manual page: 36