Bose AMPLUS 50

15
Bass Level - Use the bass level pots to increase the output level between 50 Hz and 150 Hz.
This is useful for compensating for poor bass cabinet loading or high levels of low-frequency
ambient noise. The channel 1 and channel 2 pots are active in all modes of operation.
Remote Volume - When using the amplifier to power one listening zone, connect the remote
control unit to the zone 1 (+) pin and the ground pin and set the internal remote volume switch
(see figure below) to 1 REMOTE. When using the AmPlus 100 for 2 - zone applications,
connect a second remote to the zone 2 (+) pin and the ground pin and set the internal remote
volume switch to 2 REMOTES.
Line Outputs - Both line output responses are flat (regardless of whether or not you have
installed active equalizer cards). The remote volume control affects the line output levels. Both
outputs are active in stereo mode. Only zone 1 is active in dual mono and mono modes.
Power Amplifier Outputs - The 70V output becomes active when the amp mode switch is in
the 70V position. In this setup, both AmPlus 100 channels are bridged and provide up to 100
Watts to the 70V speakers.
- When the amp mode switch is in the 2-Channel position and a jumper is placed across the
Xfr. ct. pins, 50 Watts is available at the 70V output and 65 Watts is available at the channel
2 output. (see illustration at top of page)
- With the amp mode switch in the 2-Channel position, both channel 1 and channel 2 supply
65 Watts into a minimum load of 4Ω.
Internal High Pass Switch - When this switch is in the HPF ON position, frequencies below
150Hz are attenuated at 18dB/Oct. This low frequency roll-off occurs on Channel 1 only. Use
this switch for bandlimiting high frequency speakers connected to channel 1 in a bi-amplified
system. For example, the 70V/Model 1B system in Figure 7.
Internal Remote Volume Switch - For one zone applications, this switch should be in the 1
REMOTE position. For two zone applications, this switch should be in the 2 REMOTES
position.
C
1 Remote
2 Remote
High Pass
Filter
Mix
EQ 1
EQ 2
BASS
LEVEL
Ch2Ch1
OFF
+10
OFF
+10
ZONE 1 ZONE 2
REMOTE
VOLUME
ZONE 1 ZONE 2
LINE OUTPUT
+-+-
INPUT
MODE
2Ch
dual
mono mono
+-+-+-
70V ZONE1
4-16
ZONE 2
4-16
XFR
CT
MODE
POWER AMPLIFIER
70/100V 2 Ch
BRIDGED
LEVEL
Zone 2Ch2Ch1
0 0 0-40 dB -40 dB -40 dB
-10-10 -10
-6 -6 -6
Ch1 Ch2
INPUTS A
+- +-
AMPLUS™ 100 AMPLIFIER CONTROLS
ΩΩ