Read JBL L8400P (serv.man12) Service Manual online
- CONTENTS -
BASIC SPECIFICATIONS…………………………………………..1
PACKAGING…………………………….……………….………….2
DETAILED SPECIFICATIONS…………………………………….3
CONNECTIONS..………………………………………………….. 5
OPERATION ………….…………………………..….….………….7
BASIC TROUBLESHOOTING…………………………………….8
EXPLODED VIEW……………………………………………….…9
120V BLOCK DIAGRAM..……………………………………..….10
PCB DRAWINGS………………..………………………………...11
120V ELECTRICAL PARTS LIST …………….…….…………..15
INTEGRATED CIRCUIT/TRANSISTOR PINOUTS………....19
120V SCHEMATICS.……….………………………..…. ………20
L8400P BASIC SPECIFICATIONS
Amplifier Power (RMS)
600 Watts
Peak Dynamic Power *
1200 Watts
Frequency Response (–3dB)
22Hz – Low-pass crossover frequency
Low-Pass Crossover Frequencies
50Hz – 150Hz, Continuously adjustable
Low-Frequency Transducer
12" (300mm) PolyPlas™ cone
Baffle
Low diffraction, IsoPower™
Enclosure
Sealed
Inputs
Gold-plated 5-way binding-post speaker-level;
Left and right line-level, switchable to LFE
Outputs
150Hz when using speaker-level connection
Gold-plated 5-way binding-posts
Dimensions (H x W x D)
16-1/2" (15-1/2" without feet) x 15-1/2" x 15-1/2"
(419mm [394mm without feet] x 394mm x 394mm)
Weight
58 lb (26.4kg)
* The Peak Dynamic Power is measured by recording the highest peak-to-center voltage produced by the power
amplifier with its limiters disabled, across the output of a resistive load equal to minimum impedance of the
transducer, using a 50Hz sine waveburst, 3 cycles on, 17 cycles off.
Occasional refinements may be made to existing products without notice but will always meet or exceed original
specifications unless otherwise stated
amplifier with its limiters disabled, across the output of a resistive load equal to minimum impedance of the
transducer, using a 50Hz sine waveburst, 3 cycles on, 17 cycles off.
Occasional refinements may be made to existing products without notice but will always meet or exceed original
specifications unless otherwise stated
L
8400P
L
series
1
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