JBL owner manual Applications Px300.4, Set Rear and Front Input Mode to ST, Over Mode to Flat

APPLICATIONS – Px300.4

The JBL Px300.4 amplifier can be set up for stereo or tri-mode operation, as shown in Figures 6 and 7.

NOTE: For simplicity, Figures 6 and 7 do not show power, remote and input connections.

Figure 6. The JBL Px300.4 amplifier is set to stereo mode to drive front and rear pairs of full-range speakers.

NOTE: To limit bass sent to full-range speakers, set X-OVER MODE to HP. See page 6 to set FREQ and SLOPE.

Set REAR and FRONT

INPUT MODE to ST

(on input panel)

	FRONT				REAR
GND	REM BATT		BRIDGED
NEON	R	L	STEREO	R	NEON
					L

Px300.4 POWER FUSES SPEAKER OUTPUTS SPEAKER OUTPUTS

Px300.4	RF Speaker	LR Speaker
(rear panel)
	+	+
Set REAR and FRONT	-	-
X-OVER MODE to FLAT
(on input panel)

					LF Speaker	RR Speaker
ST	MO	FLAT	HP	LP	+	+
	INPUT		MODE
	MODE				-	-

Figure 7. The JBL Px300.4 amplifier is set to drive a stereo component system and a subwoofer with a nominal impedance of 4 ohms or greater.

	FRONT				REAR
GND	REM BATT		BRIDGED
NEON	R	L	STEREO	R	NEON
					L

NOTE: To drive a pair of rear midbass speakers (instead of subwoofer), set INPUT MODE to ST, X-OVER MODE to LP, and use DBO to set HP filter.

Set FRONT

INPUT MODE to ST

Px300.4 POWER FUSES SPEAKER OUTPUTS SPEAKER OUTPUTS

Px300.4	RF
(rear panel)	System
	+
Set REAR	-
INPUT MODE to MO

Subwoofer

(on input panel)		(on input panel)		LF
				System
ST	MO	ST	MO	+
	INPUT		INPUT
	MODE		MODE	-

Set FRONT		Set REAR
X-OVER MODE to HP		X-OVER MODE to LP
(on input panel)		(on input panel)
FLAT HP LP		FLAT HP LP
	MODE		MODE

See “Setting the Crossover(s)” on page 6 to set FREQ and SLOPE

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