Martin Audio MA1.6s Specifications download pdf (Page 4)

4 INTRODUCTION

Thank you for purchasing a MARTIN AUDIO power amplifier. This manual

contains important information on operating your amplifier correctly and

safely. Please take some time to read this manual and familiarize yourself

with the advanced features of this amplifier.

4.1 The front panel

Figure 1. Front panel

1. Carry/protection handle

Both handles can be used to carry the amplifier; they also act as protection

for the front panel and controls. In fixed installations or where rack front

covers are too shallow, they may be removed by unscrewing the retaining

bolts behind the front panel.

2. Input level attenuators

These controls are used to set the signal level entering the amplifier. They

are calibrated in dB to assist the set up of active loudspeaker systems.

(See page 14).

3. Protect indicator LED

This indicator illuminates if the amplifier attempts to function above its

maximum operating temperature (90˚C). The indicator first comes on as a

warning to either turn down the input level or check the cooling

arrangements, after which point the amplifier will mute the input signal.

When the cooling fans have returned the output heat sinks to the normal

operating temperature, the input signal is un-muted.

The Protect LED also illuminates when constant signals above 12kHz at full

power are detected at the output terminals. When this occurs the input

signal is muted until the VHF signal is no longer present. (See page 16).

4. Clip/limit indicator LED

This indicator signals when the amplifier output is clipping or limiting. It has

two different indication states:

• When the clip limiter is engaged, it has a short time constant and

illuminates briefly. (See page 15).

• When the clip limiter is not engaged, it has an increased time constant

and illuminates for a longer period.

Martin Audio – MA1.6 Power Amplifier

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Martin Audio MA1.6s Specifications Page 4

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