Harrison 32Cpre Plus Microphone Preamp In Format User Guide
- July 25, 2024
- HARRISON
Table of Contents
32Cpre Plus Microphone Preamp In Format
User Guide
Introduction
Welcome to the Harrison family of 500 series modules and thank you for your
purchase of the 32Cpre+ module. All Harrison 500 series modules are compatible
with the API 500 format rack systems.
The 32Cpre+ will be a tremendous asset to your studio workflow and recording
process.
The 32Cpre+ includes a classic transformer coupled mic preamp design that
provides warm yet extremely accurate results. This preamp design uses state of
the art component technologies while preserving the sound quality found on
100’s of hit records produced over the decades.
The 32Cpre+ also includes a set of legendary Harrison High Pass and Low Pass
filters that have been a mainstay in classic Harrison console designs for the
past 50 years.
A front panel XLR and HiZ instrument connector is provided allowing easy and
fast connectivity when a different microphone or instrument is needed in a
pinch.
With your new 32Cpre+ module your recordings will instantly have a punch and
smoothness that only comes with high performance analog circuit design along
with decades of experience in professional audio product design and
development.
This module has been specifically designed to operate in a 500 format rack
such as the API lunch box or equivalent. In common with many such modules, the
nominal input / output operating level is +4 dBu.
Thank you! The Harrison Team
HP and LP Filters
The classic 32Cpre+ filters are switched into the signal path with the IN
button.
These filters have 12dB/octave slope with the 3 dB corner frequency.
- High Pass Filter: corner frequency range 25 Hz – 3.1 KHz
- Low Pass Filter: corner frequency range 160 Hz – 20 KHz
Note: The frequency ranges of the filters overlap considerably, as on our
original 32C console. It is thus possible to adjust the controls such that no
signal passes through. Control room pranksters have been delighted by this
feature for more than 4 decades. Transformer Preamp
The 32Cpre+ sports a classic transformer coupled mic preamplifier. This time
tested preamp design has been used in professional studios for the past 50
years.
The preamp provides +20 to +70dB of smooth gain with the -20 (Pad) switch not
selected.
Front Panel Combo Connector
The combo XLR with ¼” jack connector lets you plug a microphone or instrument
into the 32Cpre+ directly without having to access the rear panel of the 500
rack. This allows your main input source to be connected at all times while
Block Diagram being able to quickly connect an alternate input such as
another microphone choice or an instrument.
The HiZ switch selects the unbalanced ¼” instrument input as the alternate
source for the module.
The xlr switch selects the alternate balanced front panel XLR connector as the
input source.
Other Functions
The 48v switch activates phantom power to the rear and front XLR connectors.
The -20 switch applies a 20dB pad to the input signal just prior to the preamp
gain.
The reverses the polarity of the input signal.
The INPUT led, meters the input level with a bi-color signal-present LED
indicating activity and clipping of the module source.
Use
Try your new 32Cpre+ on any kind of input source. Use it on vocals, drums,
acoustic or electric guitars, keyboards etc. etc. Discover what a well crafted
preamp and filter front end system can add to your arsenal the same way 100’s
of legendary engineers did using Harrison consoles through the decades.
Enjoy!
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