18
CONNECTIONS
Multiple Pair Speaker Hookup For a Multiroom Sound System
WARNING: Never connect more than one pair of 8Ω speakers directly to the Speaker A and Speaker B Terminals at the same time. Doing
so can damage the M40. This type of damage is not covered by the Warranty. Always use an impedance matching device such as the
Procient VC60i Volume Control (one for each speaker pair) to protect the M40 from overload. Multiple 8Ω speaker pair can be connected
by adding one Procient VC60i Impedance Matching Volume Control to each speaker pair. Never connect more than one pair of 4Ω
speakers directly to the M40. Multiple 4Ω speaker pair connected directly to the M40 will cause the M40 to shut down and can damage
the M40. This type of damage is not covered by the Warranty. Multiple 4Ω speaker pair can be connected by adding one Procient VC60i
Impedance Matching Volume Control to each speaker pair.
Read and follow the instructions in this section when connecting multiple speaker pair to protect the M40 and help avoid
unnecessary damage.
Speaker Wire
Whole House Wire Requirement
1.
2.
SPEAKER WIRE LENGTH SPEAKER WIRE GAUGE
150' (46m) 16 AWG
400' (122m) 14 AWG
1,000' (305m) 12 AWG
Impedance Matching Volume Controls
Never install a volume control in a J-box with high voltage devices. This can introduce noise to the audio system and is a
violation of Building and Electrical Code in most places.
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