5. Fan grille filter
A foam filter is located behind the front panel grille to prevent dust entering
the amplifier.
6. Power switch
This is used to power up the amplifier.
(See page 7 and 15)
7. AC idicator
Indicates if AC voltage is present.
8. AFS indicator
Indicates if the adaptive fuse saver is activated (see page 18).
4.2
The rear panel
Figure 2. Rear panel
1. Speakon connector
This type of speaker connector may be unfamiliar to some users. A full
description is found in the operation section. (See page 11).
2. Minimum load selector (MLS™) switch
This switch is used to select the minimum nominal speaker impedance the
amplifier is going to drive (see page 12).
3. Clip limiter switch
Turns the clip limiter on and off. (See page 17).
4. Input jack
Alternative to using input XLR or for linking inputs with other amplifiers.
(See page 9).
5. Input signal XLR (See page 9)
6. Polarity reverse switch for channel B
For reversing the input signal polarity of channel B to allow bridged
operation. (See page 13).
7. Input link switch
Allows a single input to drive both channels simultaneously. (See page 13).
Martin Audio – MA4.2 Power Amplifier
E
NGLISH
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