Table Of Contents; Specifications - JBL GTO 75.4 Service Manual

Power Amplifier
GTO 75.4/75.4II Specifications
Output Power:
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:
Fuses:
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 -
SPECIFICATIONS ................................................1
FEATURES/TEST CONDITIONS.............................2
INSTALLATION......................................................3
CONNECTIONS.....................................................4
SET-UP/CONTROLS .............................................5
INSTALLING NEON TUBES....................................5
BASIC TROUBLESHOOTING..................................7
TYPICAL SYSTEM WIRING....................................8
EXPLODED VIEW/PARTS LIST...............................9
MECHANICAL PARTS LIST....................................10
AMPLIFIER BLOCK DIAGRAM...............................11
P.C.B. DRAWINGS................................................12
ELECTRICAL PARTS LIST ....................................16
VERSION II ELECTRICAL PARTS LIST ADDENDUM..............19
IC/TRANSISTOR PINOUTS......................................20
GTO 75.4 SCHEMATICS........................................23
GTO 75.4II SCHEMATICS......................................26
PACKING............................................................29
104W RMS x 4 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 142W RMS x 4 channels @ 2 ohms; ≤1% THD + N
284W RMS x 2 channels @ 4 ohms; ≤1% THD + N
80dBA (reference 1W into 4 ohms)
163W @ 2 ohms
6.38 @ 4 ohms
10Hz - 83kHz (-3dB)
5.8V
GTO 75.4 - 230mV
GTO 75.4II - 75mV
<50Mv (-50%)
.069dB @ 4 ohms
1.3A
22kΩ
52A @ 4 ohms
83A @ 2 ohms
15 1/8 x 12 5/16 x 2 3/8"
(384mm x 313mm x 60mm)
30A x 2
(L x W x D)
1
GTO 75.4/75.4II