32Classic MS
Introduction
Overview
Introduction
The 32Classic MS is a 19” 1 RU analog channel strip that include the 32Classic MS mic-preamp with transformer, a front
panel mic/instrument (HiZ) input, balanced insert point, Harrison’s classic 32C 4 band EQ with high pass and low pass
filters and a channel direct output level control “Fader” section with 0dB fixed level switch.
The unit also includes a mix bus routing section which allows the channel signal to feed a stereo Mix bus with panning.
The balanced Mix bus can be cascaded across other 32Channel MS units via rear panel “summing” bus connectors The
Mix bus can then be connected to one of the cascaded 32Channel MS units utilizing an included jumper cable whereby
the Mix Master section on that channel provides the master summing and output level controls.
This unique feature allows the customer to build an analog mixer one 32Classic MS (Mix Strip) at a time in a 19” rack.
Input Section
Each 32Classic MS includes the exact transformer mic preamp found in the Harrison 32Classic large format analog
console. The preamp includes 48v phantom power, a fixed -20dB pad and polarity reverse.
The microphone signal can be injected into the 32Classic MS unit via the rear XLR connector or the front panel XLR
(combo jack) connector when the (FRONT) MIC switch is selected. An instrument signal can be injected into the preamp
via the front panel ¼” connector (combo jack) when the (FRONT) HiZ switch is selected.
Note: if both the MIC and HiZ switches are selected the HiZ (instrument) input will be the active preamp source.
A Line input to the 32Classic MS is also included via a rear XLR. The Line input has a switch for activation and a
potentiometer providing +/- 6dB input level trim.
The Input Section also includes and Insert Point with an activation switch (INS) on the front panel and rear XLR
connectors. The insert point is directly after the input section and before the EQ section in the signal flow.
Lastly the Input Section provides a bi-color signal (SIG) meter LED.
32Classic MS EQ Section
Each 32Classic MS unit includes a four-band parametric EQ with High Pass and Low Pass filters. This is the exact same
EQ design found in the Harrison 32Classic large format analog console and is based on the legendary original Harrison
32 Series console from 1975.
The four EQ bands range from LO (40-600Hz), MID (200-3.1kHz), MID (400-6kHz) and HI (900-13kHz) with +-10dB of
boost and cut. Each band features a proportional Q design whereby the Q changes as the boost and cut is adjusted. The
LO and HI bands are Shelf bands by default and can be switched to bell mode via the bell switch provided.
The EQ section also includes a pair of the famous Harrison High Pass (HP) and Low Pass (LP) filters. The filters have
extremely wide ranges HP (25-3.15kHz) and LP (160-20kHz).
The EQ section provides separate in / out switches for the filters (FLT) and the EQ (EQ).
4 32Classic MS
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