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5
M2500 User Guide
Connections
All connections to the subwoofer are made on the recessed panel
at the rear of the unit. The unit should be switched off before any
connections to the system are changed.
Power
AC mains is connected to the IEC power inlet. Where possible
connect the M2500 to an grounded socket using the mains lead
provided. Try to use a separate AC power outlet for each active
speaker. The use of adapter units is discouraged as they degrade
the sound quality.
Unbalanced Audio
Unbalanced audio may be connected to the phono sockets on the
M2500 with the audio lead provided.
L-
R-
L+ R+
If your preamp or surround sound decoder has a mono subwoofer
output, connect this to the L+ socket only. This is the connection
you should make if you have a 565 Digital Surround Processor.
If your preamp or surround sound decoder does not have a mono
subwoofer output, you can connect to both the L+ and R+
sockets. The M2500 will combine these signals to produce the
mono signals it needs.
If you know that you require the subwoofer to invert absolute
phase, you can connect to the negative L-, or L- and R-, sockets
instead. If you are unsure, Use the positive L+, or L+ and R+
sockets to start with.
Balanced Audio
Balanced audio may be connected to the LEFT and RIGHT
BALANCED INPUT XLR sockets. If your preamp or surround
decoder has a balanced output, it may be connected as follows.
2
3
1
Connections to XLR:
1. Shield and ground or common.
2. Signal phase positive.
3. Signal phase negative.
If your preamp or surround decoder provides a mono subwoofer
output, connect to the Left input only. If it does not, you can
connect to both the Left and Right inputs and the M2500 will
combine them.