Manual

For optimum performance at line level, this module employs a double-balanced,

instrumentation-grade input amplifier (3 x ICs) rather than the inferior differentially-

balanced amplifier (1 x IC).

Isolation between the two inputs (Line 1 and Line 2) is so high, they may remain

connected to the mixer simultaneously. Line 2 input is selected by switch (3).

Following the input amplifier is the continuously-variable, input-gain control (23) and

phase change (4).

The three high-pass filters are independent of the equaliser and are selected by

combining switches (5) and (6). HPF frequencies are to be found in the TECHNICAL

SPECIFICATION. The equaliser is identical with that in the microphone/line module

and is engaged by EQ (9).

For convenience in post-production, and in order that external processing equipment

may remain connected to the module, an insert in/out switch has been included -

INST (17).

The channel output can be selected to pre fader via the DIL switch on the main PCB.

(Refer to page 74)

Extra gain in pre-fader auxiliaries has been deemed unnecessary in post-production

and has not been included in this module - auxiliary level controls are attenuators

only, whether the source is pre or post fader. Otherwise, the auxiliary section is

identical with that in the microphone/line module.

Routeing to main output (channel mute) - L-R (16), routeing to monitor 1 - MON (18),

PFL and LED - (19) and (20), overload LED - (21), panpot (29) and clean feed are all

identical with those in the microphone/line module.

Mono line modules have been designed to be used in pairs and situated in the mixer

frame in positions 1/2, 3/4, 5/6 etc. On the mother board, between these positions

are small plug-in PCBs carrying the two encoding/decoding matrix amplifiers and

which are engaged by MTX 1 (2) and/or MTX 2 (15) on BOTH modules of the stereo

pair.