Speaker B - Proficient Audio Systems M40 User Manual

Speaker B

A second pair of 8Ω speakers can be connected directly to the M40 using the Speaker B Terminals. This allows having a second pair
of speakers that can be turned ON and OFF from the M40 Front Panel or Remote Control. This application is convenient for adding
a pair of patio speakers that would not be left on all the time or a pair of speakers for another room.
Note: Do not connect more than one pair of 4Ω speakers directly to the M40. Do not connect more than one pair of 8Ω speakers
directly to the Speaker A and B Terminals at the same time. This will cause the M40 to shut down and can damage the unit. This
type of damage is not covered by the Warranty.
To connect multiple speaker pair to the M40, see Page 18.
Speaker B Connections
Follow all instructions for Speaker A, but this time use the Speaker B Terminals for the Left and Right Speakers.
Sub Out
Diagram 6 shows connections for adding a powered subwoofer with a 14V Control Input to Speaker A using the Sub Out A
connections. This configuration will have the subwoofer turn ON when Speaker A is turned ON and turn OFF when Speaker A is
turned OFF. The sub will also mute when Speaker A is mute. Configure Sub A as shown in Diagram 6.
Note: There are several different ways to connect a subwoofer to an audio receiver. One is to have the receiver's speaker level out-
put connected to speaker level inputs on the sub. The sub then acts as a crossover, separating the high and low frequencies with
the low frequencies going to the sub and the mid and high frequencies going to the connected left and right speakers. Some subs
are passive (as just described), some are amplified, some have left and right line level inputs, some are mono for a mono signal
from the receiver. The following describes a typical application for a powered sub that accepts a mono line level audio signal from
the M40, with the left and right speakers connected to the M40 Speaker A terminals. Please refer to the subwoofer instructions for
connection and operating options for varying subwoofer applications.
Sub Out A Connections
Audio
Using a mono RCA-RCA cable, connect the Sub A MONO Jack on the M40 to the Audio Line IN on the subwoofer. Some subs will
have adjustable crossover points to match the low frequency cut-off of the left and right speakers. Refer to the sub manufacturer's
instructions for additional information.
Trigger Out
Using a mono Mini-Mini Cable, connect the Sub A Trigger Out Jack on the M40 to the Control IN on the subwoofer.
Note: Some subs may have different types of connectors for the Control IN. Be sure to maintain proper polarity when making this
connection. Refer to the sub manufacturers instructions for additional information.
Trigger Out Polarity: TIP = +14V DC, SLEEVE = GND
Link S/W
Set the Link S/W A Switch to the ON position. This will have the Sub A Mono Out and Trigger Out turn ON/OFF with Speaker A
status. (When Speaker A is ON, Sub A Mono Out will output full-band line level audio and Sub A Trigger Out will output a 14V DC
Control Voltage. When Speaker A is OFF, both will turn OFF.
Sub Out B Connections
Follow all instructions for Sub Out A, but this time use Sub B Out for the subwoofer connections.
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CONNECTIONS