Biamp MXA Series, Operation Manual

Page: 6 / 14

4
INSTALLATION INSTRUCTIONS
input
1
input
2
channel 1
min max
peak
channel 2
peak
trim
min max
trim
min max
trim
min max
trim
min max
trim
min max
min max min max
min max
min max
trim
input
3
channel 3
peak
input
4
channel 4
peak
input
5
channel 5
peak
input
6
channel 6
off
low cut
off
link
link
on
off
on
peak
auto mute
sensitivity limiter
threshold
70V 100V 25V
class 2 wiring
class 3
wiring
com
pre out
+10V C
EQ in
line out amp in
xfmr
input
4
Ω
gnd
chime
level
110-120/220-240V
~
50-60Hz 300W
FUSE: T 8A/4A L 250V 120V/240V
Music
On
Hold
output
Music On
Hold level
remote
level
control
mute/chime
mic/line
tel
BIAMP SYSTEMS
120V
FU
SE
FU
SE
O
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
phantom pwr
priority
auto mute
manual mute
-80dB
on
on
on
on
-20dB
MXA300
UL
R
LISTED
52SJ
C US
RoHS
Compliant
EU 2002/95/EC
CAUTION: These Installation Instructions are for use by qualified service personnel only. To reduce the risk of electric shock, do not
perform any servicing unless you are qualified to do so.
Output Connector: These seven screw terminals provide the speaker outputs from the amplifier. From the factory, a jumper wire is
installed from the 4
Ω
terminal (direct output) to the xfmr input terminal. For transformer (xfmr) output, connect speaker negative to the
com terminal, and connect speaker positive to the appropriate transformer output terminal ( 25V for a 25 Volt distributed speaker system;
70V for a 70 Volt distributed speaker system; 100V for a 100 Volt distributed speaker system). For direct amplifier output, first remove the
factory installed jumper wire, then connect speaker negative to the gnd terminal, and connect speaker positive to the 4
Ω
terminal.
CAUTION: The 100V output requires Class 3 wiring. Please refer to a qualified electrician.
CAUTION: To avoid output fault conditions, Low Cut must be used when driving 25/70/100 Volt speaker systems (see Front & Rear Panel
Features on pg. 3). Also, any other system equalization affecting frequencies below 125Hz should remain flat or be used as cut-only. This
also precludes boosting of the Bass control in these applications.
Speaker Output Connections:
1) M4 ring lugs (9mm) supplied as accessories with this product must be used to connect speaker wires to the amplifier output screw
terminals. This will prevent the wires from accidentally disconnecting from the screw terminals. The ring lugs will accept 14~20 AWG wire.
For proper wiring and insulation of ring lugs, in particular for 100V output, see Figures #1 & #2 on next page .
2) 'P' Clip supplied as an accessory with this product must be used to route the speaker wires.
3) For installation of the 'P' Clip refer to Figure #3 below.