Quick Guide Overview; Front Panel Overview; Power On/Off And Remote Switch; Front Panel Led's - Gisen Audio MM Series Operation Manual

5.1 F ront-Panel overview
The amplifier's front panel presents the performance
and fault condition indicators, power and remote
switches, and a removable dust-filter cover. Level
potentiometers provide individual attenuation for the
amplifier channels. Range is 0 dB to - infinity. (The
12 o'clock position indicates -10 dB attenuation.) A
convenient label strip with writing surface is provided
adjacent to each level potentiometer.
To remove the dust-filter covers, loosen the thumb-
screws located underneath the front handles. This
allows removal of the dust-filters for cleaning. The
covers may be made tamper resistant by replacing
the thumbscrews with Philips head or safety Torx
screw. Thread size is M3.
The amplifier never should be operated
without the dust-filters in place.
NOTE

5.1.1 Power on/off and remote switch

The Power on/off switch is located on the right side.
A second switch, labeled REMOTE is above the
Power switch.
5.1.2 Front-panel LED's
The front-panel LED area includes the following
indicators per channel:
" "
" ",
MM10K
Figure 5.1.2a: Front panel LED field (per-
channel)
VHF
- Very High Frequency protection active (output muted)
(Yellow constant)
TEM
- Temperature warning (Yellow flashing)
TEM
- Temperature mute (Yellow constant)
CPL
- Current Peak Limiter (CPL) active (Orange flashing)
CPL
- (Orange constant with output muted): Low impedance
/ short circuit detection fault
VPL
- Voltage Peak Limiter (VPL) active
SIG
- Signal levels - 40 dB (Sig) to- 4 dB
Hi-Imp
- High-impedance/open load detected (Orange)
Bridge
- Bridge mode operation (Yellow)
When no VPL, CPL or PAL indicators are illumi-
nated, and the VPL DIP-switch is set to maximum
at the specified nominal load, the amplifier
NOTE
channel is able to deliver maximum rated output
power
Power on (Green)
Figure 5.1.2b: Front panel global LED field
MM Series Operation Manual 9