JBL CS300.1 Service Manual

- CONTENTS -
SPECIFICATIONS ………………………………….……..1
PACKAGING……..…………………………………….......2
CONNECTIONS………………….……...……..…...…..…3
SET-UP/CONTROLS ……..………………..…….….…...4
BASIC TROUBLESHOOTING..…….…….………………4
EXPLODED VIEW/PARTS LIST…….….….…………....5
AMPLIFIER BLOCK DIAGRAM…………………….……6
P.C.B. DRAWINGS….……………………………….…….7
ELECTRICAL PARTS LIST ..……….……….…….….…9
IC/TRANSISTOR PINOUTS..……..….…….….….….….12
SCHEMATICS………..…………………………….……..13
CS300.1 Specifications
Output Power: 236W RMS x 1 channel @ 4 ohms, ≤1% THD + N
(14.4V supply) 338W RMS x 1 channel @ 2 ohms, ≤1% THD + N
Signal-to-noise ratio: 100dBA (reference 1W into 4 ohms)
Dynamic power: 464W @ 2 ohms
Effective damping factor: 6.395 @ 4 ohms
Frequency response: 10Hz – 320Hz (–3dB)
Maximum input signal: 7.5V
Maximum sensitivity: 260mV
Bass boost (45Hz) Variable 0 – 6dB
DC Offset <30mV
Output regulation: .073dB @ 4 ohms
Idle Current 0.71A
Input Impedance 20kΩ
Max Current Draw 23A @ 4 ohms
42A @ 2 ohms
Dimensions: 12 x 10 x 2 1/4” (L x W x H)
(305mm x 254mm x 57mm)
Fuses: 20A x 2
JBL continually strives to update and improve existing products, as well as create new ones. The specifications and
details in this and related JBL publications are therefore subject to change without notice.
CS Series 300.1
1

JBL CS300.1 Specifications