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

-

5

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Image 5
JBL Applications Px300.4, Set Rear and Front Input Mode to ST, Over Mode to Flat, Set Front Input Mode to ST