Jbl 6008 service manual

Page 1

JBL
6007/6008
INSTALLATION
AND SERVICE
MANUAL

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Page 2

Owners Instructions

Architectural Specifications

The amplifier shall be single channel with an input gain
control and an output level meter on the front panel.
The amplifier shall accommodate an unbalanced high
impedance input. or a balanced low impedance input
with an optional plug-in accessory transformer.

The amplifier shall be capable of delivering a min-
imum of 60 W, continuous sine wave, 20 Hz-20 kHz,
into a 4 0 load. (6007: The amplifier shall incorporate
an output transformer allowing full power operation,
35 Hz-2O kHz. into an 8 Q, 16 0 or 70.7 V line as well
as a direct Output terminal for a 4 0 load.) [6008: No
output transformer and only a direct output terminal
shall be provided, but it shall be possible to install an
output transformer easily at any time.)

The amplifier shall have < 0.2% THD. 20 Hz-20 kHz.
@ 60 W. direct output. (6007: The amplifier shall have
< 0.2% THD. 35 Hz-20 kHz, @ 60 W. transformer
output.) Frequency response shall be t 0.5 dB,

20 Hz-20 kHz, @ 1 W. Power bandwidth shall be
10 Hz-4O kHz.

Construction of the amplifier shall be modular. The
entire amplifier circuit, except for the power supply
(6007: and output transformer] shall be mounted on
a single circuit board attached to the heat sin k, which
assembly shall be removable from the unit with the
mainframe still mounted in a rack. Cables connecting
the circuit board to the mainframe shall be of a length
sufficient to allow removal of the board without dis-
connection and shall disconnect easily at two plugs.
The amplifier shall occupy three standard ElA rack
spaces and shall operate on 120/240 VAC, 50/60 Hz.

RCA-TYPE
INPUTS (J301)

DIRECT OUTPUT
TERMINAL STRIP (T8303)

LO CUT/OUT
SWITCH (8301)

LlNE TERMINAL
STRIP (T5301)

TRANSFORMER OUTPUT
TERMINAL STRIP US$302)

OPTIONAL MATCHING/BRIDGING
TRANSFORMER INPUT SOCKET (XK301)

FIGURE 1

Product Specifications

Model 6008 6007
Power Output'

Direct 60 W 80 W

Transformer Optional 60 W
Power BandWidth

DIIQCIvFUII 20 Hz-20 kHz. : 0.5 dB

-% lOHZ-40 kHz.= 0.5 dB

Transformer~Full 35 Hz-20 kHz, x 1 dB

THD?
Direct < 0.2%
Transformer
IM3
Full.10 W.015W < 0.2%
Load Impedance
Direct 4 0 4 Q
Transformer (taps) 8 n
16 n
83 0
Output Regulation
Dred Better than 15%
Transformer 7
Power Gain 72 dB
Input Sensmviiy
Unbalanced
(50 km 0.4 V
Balanced 0 27 V
Balanced 0.07 V
Signal-to-Noise
Ratio' 90 dB

Low»Cut Filter 6 dB/octave below 250 Hz. swnchable

Power Requirements 120/240 VAC, 50/60 Hz

Power Consumption

Quiescent 20 W
V: Power 105 W
Full Power 165 W
Fuse 2A,3AG(120V) 1A, 3AB(240V]
Maximum Ambient
_Temp. 60°C (140°F]
Mounting ElA STD
Spaces 3
DimenSions
Front Panel 483x133 mm (19x5V32in)
Depth of Controls 19 mm (y. in)
Depth Behind Panel 325 mm (1225/3: in)
Net Weight 103 kg [22% lb) 12 7 kg (28.0 lb)
Shipping Weight 13.5 kg (29% lb) 15 8 kg (34% lb]
Accessories JBL 5195
Matching/Bridging Transformer
JBL 60-8008

Output Transformer Assembly

NOTES: 1.Continuous sine wave.
2. Total harmonic distortion at rated output.
3. SMPTE standard.
4 600 Oor 15 kn with 5195 Matching/Bridging
Transformer
5 600 O. 14 dB step-up configuration.
6. Requires internal modification.
7. Requires 20 kHz equivalent bandWIdth filter