Table Of Contents; Specifications - JBL GTO 75.2 Service Manual

Power Amplifier
SPECIFICATIONS ................................................1
FEATURES/TEST CONDITIONS.............................2
INSTALLATION......................................................3
CONNECTIONS.....................................................4
SET-UP/CONTROLS .............................................5
INSTALLING NEON TUBES....................................5
BASIC TROUBLESHOOTING..................................6
TYPICAL SYSTEM WIRING....................................7
EXPLODED VIEW/PARTS LIST...............................8
MECHANICAL PARTS LIST.....................................9
AMPLIFIER BLOCK DIAGRAM...............................10
P.C.B. DRAWINGS................................................11
ELECTRICAL PARTS LIST ....................................13
VERSION II ELECTRICAL PARTS LIST ADDENDUM..............16
IC/TRANSISTOR PINOUTS......................................17
GTO75.2
GTO75.2II
PACKING............................................................23
GTO 75.2/75.2II Specifications
Output Power:
(14.4V supply)
Signal-to-noise ratio:
Dynamic power:
Effective damping factor:
Frequency response:
Maximum input signal:
Maximum sensitivity:
DC Offset
Output regulation:
Idle Current
Input Impedance
Max Current Draw
Dimensions:
Fuse:
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.
- CONTENTS -
SCHEMATICS.........................................19
SCHEMATICS......................................21
97W RMS x 2 channels @ 4 ohms; ≤1% THD + N
145W RMS x 2 channels @ 2 ohms; ≤1% THD + N
290W RMS x 1 channels @ 4 ohms; ≤1% THD + N
82dBA (reference 1W into 4 ohms)
190W @ 2 ohms
6.39 @ 4 ohms
10Hz - 90kHz (-3dB)
5.5V
GTO 75.2 - 230mV
GTO 75.2II - 75mV
<50mV (-50%)
.098dB @ 4 ohms
1.0A
22kΩ
23A @ 4 ohms
37A @ 2 ohms
11 5/8 x 12 5/16 x 2 3/8"
(295mm x 313mm x 60mm)
30A
1
GTO 75.2/75.2II
(L x W x D)