WARNING
THIS SECTION OF THE M A N U A L
CONTAINS SERVICE INSTRUCTIONS
FOR USE BY QUALIFIED SERVICE
PERSONNEL ONLY.
RECOMMENDED TEST EQUIPMENT
Instrument Type
Required Characteristic
Recommended Instrument
Distortion Analyzer
Measurable to 0.002%
' Sound Technology Model 1700A
Output Load Resistor
12.5 W, 8
n ,
Non-inductive type.
1 %
Dale NH-12.5
Resistor Decade Box
1 n - 1 k n
min. EIA Standard
Variable Autotransformer
Capable of supplying 25 W over a range of 9 0 - 1 3 6 V.
1. If autotransformer,does not have an AC voltmeter, monitor
the output voltage with either the multimeter indicated below,
•or an AC voltmeter with a range of 9 0 - 1 3 6 V A C .
2. If the autotransformer does not have a watt meter, a watt
meter capable of indicating 25 watts will be required.
GenRad W5MT3AW
Multimeter
Accuracy: ± 0.1% r 1 count
DC Range: ± 199.9 mV to ± 1199.0 V
AC Range: 0.2 V A C to 1200 V A C
Input Resistance: 10 M f i
20 kHz Equivalent Bandwidth Filter
Item
JBL Part No.
Qty.
Description
1
51517
4
6 x % x
1
oval head, crossed-recessed sheet metal screw
2
52014
4
8-32x1%
flat head, crossed-recessed machine screw
3
58397
4
10x1x!4
flat head, crossed-recessed sheet metal screw
4
57307
4
No. 10
speednut
5
6001
1
amplifier
6
3103
1
crossover network
7
52192
1
knob
8
1
16A
1
9
52671
1
rear gasket
10
33841
4
10-32x1
flat head, crossed-recessed machine screw
1
1
LE 25-2
1
12
56355
1
grille assembly
UBL
Professional Division
James B. Lansing Sound, Inc., 8500 Balboa Boulevard, Northridge, California 91329 U.S.A.
58027 4301E PTM-8/78 PRINTED IN U.S.A.
Содержание 4301E
Страница 1: ...JBL 4301E INSTALLATION AND SERVICE MANUAL...
