JBL 5152, Инструкция по установке и обслуживанию

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A r c h i t e c t u r a l S p e c i f i c a t i o n s
T h e preamplifier shall have two input c h a n n e l s with
separately adjustable gain controls accessible on the
front panel. E a c h input c h a n n e l shall a c c o m m o d a t e
an unbalanced high impedance microphone or line
input, or a balanced high or low impedance micro-
phone or line input with an optional a c c e s s o r y plug-in
transformer. O n e input c h a n n e l shall also a c c o m -
modate a magnetic phono cartridge input.
T h e preamplifier shall be capable of operating in
either of two modes. In the MIX mode, both input c h a n -
nels shall be mixed together with full gain available to
e a c h at all times. In the O V E R R I D E mode, C H A N N E L
1 shall be switched on and C H A N N E L 2 shall be
reduced in gain by 15 d B m w h e n the T R I P terminal
is connected to G N D .
T h e preamplifier shall be capable of +18 d B m output
level into an unbalanced 6 0 0 O load [direct output}
and + 24 d B m output level into a balanced 6 0 0 O load
(transformer output]. F r e q u e n c y response in the audio
band shall be flat within ± 1 d B and distortion shall be
<0.2%, 30 H z - 2 0 k H z . T h e preamplifier shall o c c u p y
one standard E I A rack s p a c e and shall operate on
1 0 0 - 1 2 0 V A C or 2 0 0 - 2 4 0 V A C , 5 0 / 6 0 Hz.
I n s t a l l a t i o n
T h e 5152 is suitable either for rack mounting in one
EIA standard rack s p a c e (1
2
%
2
"3 without additional
bracing or ventilation, or for counter-top placement.
All external connections, M I X / O V E R R I D E switch and
matching/bridging transformer options are available
on the rear panel, Figure 1.
N O T E : All low-level amplification circuitry c a n be
adversely affected by strong magnetic fields. For this
reason, it is r e c o m m e n d e d that the unit be located at
least seven inches from any power amplifier or
similar s o u r c e of electromagnetic radiation.
V e n t i l a t i o n
T h e 5152 generates minimal heat during normal usage.
However, b e c a u s e transistors are heat sensitive, the
5152 should not be placed adjacent to heat-generating
equipment or in areas w h e r e the ambient temperature
exceeds 5 0 ° C (122°F) without adequate ventilation.
Figure 1
PRODUCT SPECIFICATION
D i r e c t Out T r a n s f o r m e r O u t
G a i n
L o w I m p e d a n c e 6 2 d B 6 8 d B
M i c r o p h o n e
(with 5195 t r a n s f o r m e r ]
High I m p e d a n c e 4 5 d B 51 d B
Microphone
[no t r a n s f o r m e r ]
Line 2 5 d B 31 d B
[with 5195 t r a n s f o r m e r ]
Line 21 d B 2 7 d B
(no t r a n s f o r m e r ]
P h o n o 4 7 d B @ 1 k H z 5 3 d B @ 1 k H z
M a x i m u m Output Level
B a l a n c e d + 2 4 d B m @
6 0 0
a
U n b a l a n c e d + 1 8 d B m @
6 0 0 O
F r e q u e n c y R e s p o n s e 2 0 Hz to 2 0 k H z , + 0 , - 1 d B
( @ + 1 8 d B m ]
T H D < 0 . 2 % , 30 H z to 2 0 k H z
Equivalent Input Noise - 1 2 5 d B ref. 0 . 7 7 5 V unweighted, low
i m p e d a n c e m i c r o p h o n e input, 150 O
s o u r c e , either c h a n n e l , m a x i m u m vol-
u m e , 2 0 k H z equivalent noise bandwidth
Input I m p e d a n c e
L o w I m p e d a n c e 1 kO
Microphone
High I m p e d a n c e 56 kO
Microphone
L i n e 15 k O Or 6 0 0 O with terminating resistor
P h o n o 56 kO
( c h a n n e l 2 only]
P o w e r R e q u i r e m e n t s 1 2 0 / 2 4 0 V A C , 5 0 / 6 0 Hz
P o w e r C o n s u m p t i o n 6 W, n o r m a l
M a x i m u m Ambient 5 0 ° C 122° F
Operating T e m p e r a t u r e
C l e a r a n c e D i m e n s i o n s
Front Panel 4 4 m m x 4 8 3 m m 1
2
%
2
i n x 1 9 i n
Depth of Controls 2 0 m m % in
Depth B e h i n d P a n e l 216 m m 8 /
2
in
(no t r a n s f o r m e r ]
Depth Behind P a n e l 251 m m 9% in
(with 5195 t r a n s f o r m e r ]
Mounting 1 E I A standard rack
s p a c e
Weight
Net 3.6 kg 8 lb
Shipping 4.8 kg 10.5 1b
A c c e s s o r y 5195
matching/bridging
transformer