Bridged Mode Connections

Model PA435X

Page 11

MRC88 Preamp Ouptus

or Other

RCA Type Patch Cord

PREAMP OUT
	8
L	R
STATUS
ZONE IR
K
E
Y
P
A
D

			RCA Type
			Patch Cord
	Set MODE		Patch Cord
	Set MODE
	Switch to		PA435X
	BRIDGED position		PA435X
			Rear Panel

LEFT	A	RIGHT
	A	MODE
		STEREO
		MONO
		BRIDGED
	1V

LEFT	B	RIGHT
	B	MODE
		STEREO
		MONO
		BRIDGED
	1V

LEVEL

3V .2V

+BRIDGED --

SPEAKER

LEFT		RIGHT
	+ --	-- +
	+ --	-- +

LEVEL

3V .2V

+BRIDGED --

SPEAKER

LEFT		RIGHT
	+ --	-- +
	+ --	-- +

Be sure speakers are connected with correct polarity as shown.

+	–	+	–
		Wall speakers,
		shelf speakers, etc.
	Left		Right

Figure 7 – Bridged Mode Connections

In general, it is recommended that the BRIDGED mode not be used in multi-room applications where several speakers are driven through room volume controls and the like.

For such applications, use the STEREO mode. Use the BRIDGED mode for single speaker, higher power applications, such as in surround sound systems. Use speakers with an impedance rating of 8-Ohms minimum.

To make connections for the BRIDGED mode, follow the steps given before for stereo connections, but with the following differences:

1.You may connect the RCA-type patch cables from the OUTPUT jacks of the driving preamp or other source to either the LEFT or the RIGHT input jacks of the bridged pair, as shown in Fig. 6. Do this for just the amplifier pairs you wish to run in the bridged mode.

CAUTION: Be sure Power is OFF when connecting or switching the amp into or out of BRIDGED operation.

2.Slide the MODE switch to the BRIDGED position.

NOTE: Do this only on the amplifier pairs you wish to run in the bridged mode!

3.Connect one speaker wire pair between the 4-terminal "SPEAKER" connectors on the PA435X and the speakers as shown in Fig. 6. Be sure to use only the two outer terminals marked "+” and "–" on the 4-terminal connector as shown on the panel for BRIDGED connections.

NOTE: Only one speaker is connected per amplifier pair in the BRIDGED mode!