Chamber reverb 145
PRO1 Live Audio System
Operator Manual
Chamber reverb
The chamber reverb emulates the sound of echo chambers found in early recording
studios. This is characterised by a rapid build up of reflection density within a small to
medium sized space coupled with a relatively colourless and smooth decay.
Reflective surface materials and air absorption properties can be simulated by adjusting
the high and low frequency cut amount and high frequency damping. Low frequency
decay and cross-over parameters allow relative control over the low band reverb tail
length. This can be used to either simulate real room responses, which often have a
longer decay time at low frequencies, or alternatively can be useful to reduce low
frequency energy in a live environment where it may already be present due to the
natural reverberation of the venue.
Item Element Function
1 input meter Two adjacent 11-LED columns — one each for left and
right — comprise the input meters.
2 mix control knob Adjusts the dry/wet signal ratio.
3 modulation
control knob
Specifies the combined rate and depth of modulation
applied the reverb tail.
4 contour time
control knob
Controls the time over which the reflection density
increases during the initial portion of the reverb tail.
5 lf x-over control
knob
Specifies the cross-over frequency for the low
frequency decay (lf decay), in the range 20Hz –
500Hz.
6 output meter Two adjacent 11-LED columns — one each for left and
right — comprise the output meters.
7 Audition button This momentary-action button triggers a short
internally generated sound to aid reverb evaluation
(as a check).
8 hf cut control
knob
High frequency cut control knob applies a 6dB/Oct
low pass filter to the input signal, in the range 200Hz
to 20kHz.
9 lf cut control knob Low frequency cut control knob applies a 6dB/Oct
high pass filter to the input signal, in the range 10Hz
to 500Hz.
10 hf damp control
knob
High frequency damping, progressively reduces the
high frequency content over time, in the range 1kHz
to 20kHz.
11 lf decay control
knob
Specifies the ratio of decay for low frequency content,
in the range 0.5 – 2.0.
6
15 14 13 12 11 10 9 8
1
42 3 5
16 7
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