AMC MA 21 Manual do utilizador - Página 7

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Operation

Function description of MA 21 amplifier

100V OUTPUT

Output terminal is designed to connect speaker line to amplifier. There are availa-

ble two types of output: low impedance 8 Ω and 100 V outputs for constant volt-

age audio line. Each of the amplifier zones can run only one output configuration

at the same time. Operating amplifier using 8 Ω and 100 volt concurrently may

cause damage to the amplifier or connected speakers.

LOW IMPEDANCE OUTPUT

Output designed for 8 Ω loudspeakers. Operating amplifier using 8 Ω and 100

volt concurrently may cause damage to the amplifier or connected speakers.

PREAMP OUTPUTS

This is line level RCA output to connect audio recording equipment or any other

purpose. Subwoofer out and record out are the same type preamp output con-

nected in parallel inside the amplifier.

LINE LEVEL AUDIO INPUT

RCA input for line level audio. Signal from line inputs can be selected and broadcast to

zones by using line input selector located in the front panel.

PAGING MICROPHONE INPUT

This input is designed to connect Talk St Z2 paging microphone to amplifier. 5

pin XLR connector's audio inputs pin's and 3 pin XLR are connected in parallel

with each other, because of this reason please connect only one microphone in

one MIC input.

USER MANUAL

MA 21 Two zone mixing amplifier

Paging microphone input pinout 5pin XLR connector:

1. GND

2. MIC audio signal +

3. MIC audio signal -

5. Zone 1 mute trigger

MIC 2 and MIC 3 input zoning can be controlled by external buttons, relays or

external devices as well.

Application and circuit diagram:

Microphone is muted in both zones

Microphone is muted in zone 2

Microphone is muted in zone 1

MICROPHONE INPUT

This is balanced microphone input. This input as well as MIC 2 and MIC 3 inputs

are suitable for dinamic microphones only. MIC 1 input is priority input.

4. Zone 2 mute trigger