INTRODUCTION
The RA402 provides two four section equalisers in a standard 19"x 3.5"
(482.6mm x 88.9mm) rack mounting unit. Each section has controls for
centre frequency, bandwidth, equalisation and an In/Out switch.
The frequency controls cover the entire audio spectrum from 20Hz to
18kHz in 4.5 octave ranges, giving 2.7 octave overlap between sections.
A Q range of 0.89 to 13 (5.5dB/octave to 36dB/octave) is available on
the bandwidth control and up to 21dBs of boost or cut can be applied
with the equalisation control.
Each equaliser has an input gain control with 20dB of make up gain
and an overall in/out switch.
The peak LED will light and stay on for 100mS if any of the sections
should should detect an instantaneous overload.
INSTALLATION
Immediately the RA402 is unpacked it should be inspected for transit
damage. The unit left the factory in perfect order and any damage
should be reported to the carriers immediately.
CHECK THAT THE MAINS SELECTOR ON THE REAR PAN-
EL IS SET TO THE CORRECT MAINS VOLTAGE FOR YOUR
AREA.
Signal connections are made via the XLR type connectors on the rear
panel. Both inputs and outputs are electronically balanced and should
be wired as shown in diagramatic form on the rear panel alongside the
sockets. Signal ground and chassis ground are separate, they can be
linked inside one of the cable XLRs if required.
