Power Amplifier GTO 755.6/755.6II
- CONTENTS -
SPECIFICATIONS ?????????????.??..1
FEATURES/TEST CONDITIONS??..?.??????2
INSTALLATION???????.??...??..?...?...?3
CONNECTIONS???????.??...??..?...?..?4
SET-UP/CONTROLS ??..?????.?..??.?.?...6
INSTALLING NEON TUBES..??.??..??????..6
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?.???.20
IC/TRANSISTOR PINOUTS..??..?.??.?.?.?.?..21
GTO755.6 SCHEMATICS?????????...??...24
GTO755.6II SCHEMATICS???..???.??..??...28
PACKING??..????????????????....32
GTO 755.6/ GTO 755.6II Specifications
Output Power: 60W RMS x 4 channels; 107W RMS x 2 channels
(14.4V supply) @ 4 ohms; ?1% THD + N
80W RMS x 4 channels; 150W x 2 channels
@ 2 ohms; ?1% THD + N
160W RMS x 2 channels; 300W x 1 channel
@ 4 ohms; ?1% THD + N
Signal-to-noise ratio: 79dBA (reference 1W into 4 ohms)
Dynamic power: 117W (channels 1,2,3,4) @ 2 ohms
163W (channels 5,6) @ 2 ohms
Effective damping factor: 6.39 @ 4 ohms
Frequency response: 10Hz - 47kHz (-3dB) (channels 1,2,3,4)
10Hz - 302Hz (channels 5,6)
Maximum input signal: 6.0V
Maximum sensitivity: GTO 755.6 - 250mV
GTO 755.6II - 75mV
DC Offset <50mV (-50%)
Output regulation: .042dB @ 4 ohms
Idle Current 1.9A
Input Impedance 22k
Max Current Draw 50A @ 4 ohms
89A @ 2 ohms
Dimensions: 18 11/16 x 12 5/16 x 2 3/8? (L x W x D)
(474mm x 313mm x 60mm)
Fuses: 30A 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.
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