Installation guide

46/50 Integrated Mixer Amplifier Setup And Installation Guide

CLOUD ELECTRONICS LIMITED

6.2 Connecting Multiple PM4s to a 46/50

Multiple PM4 microphones can be connected to the 46/50 by wiring them either in parallel with

their analogue interface or daisy chaining the digital interface. See the “PM4/8/12/16

Installation and User Guide”, page 27, “Systems with multiple paging microphones” for

more details. If wiring using the analogue interface note that the 46/50 can only supply enough

power for one paging microphone, any additional PM4 mics will require their own external power

supply (CPM-PSU) and should not have their +V termination wired back to the 46/50. See

section 10 for details of current availibility and consumption.

6.3 Microphone Gain Control

Pre-set gain controls are provided adjacent to the respective microphone input. The gain can be

adjusted from 10dB to 50dB. A high overload margin is maintained at all gain settings.

6.4 Microphone Equalisation

Two-band equalisation is provided for both Mic 1 and Mic 2. The pre-set controls to adjust the

equalisation are located to the right of each rear panel microphone connector. The

characteristics of the equalisation are optimised for the tonal correction of speech signals. The

HF control provides ±10dB at 5kHz whilst the LF control provides ±10dB at 100Hz.

6.5 High Pass Filter

Both microphone channels pass through independent high pass filters operating at 100Hz that

provide effective attenuation of breath blasts and LF handling noises. The circuitry providing this

feature is fixed and cannot be defeated.

V6 070113