Crown Audio MA-24X6, MA-36X12 Only One Channel Shown, Theory of Operation, page, Inputs

Macro-Tech MA-24X6 & 36X12 Power Amplifiers

6 Theory of Operation

XLR

P.I.P.

BALANCED

INPUTS

1/4" PHONE

	+Vcc
+Vcc	B
A
(ODEP)	(ODEP)

TRANSLATOR LVA

				NPN HI	NPN LOW
				OUTPUT	OUTPUT
				STAGE	STAGE
		E					+Vcc
		A			OUTPUT
		B		CURRENT
			BIAS			BIAS
		ODEP		LIMIT
		C			+
		D
BALANCE	VARIABLE	ERROR				BRIDGE	–Vcc
INPUT STAGE	GAIN STAGE	AMP		PNP HI	PNP LOW	BALANCE
				OUTPUT	OUTPUT
				STAGE	STAGE
		TRANSLATOR	LVA	C	D
DISPLAY
			–Vcc	(ODEP)	(ODEP)
					–Vcc

ONLY ONE CHANNEL SHOWN

Figure 6.1 Circuit Block Diagram (Channel 1)

page 20 Operation Manual