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F i g u r e

Blank Crossover Card

T a b l e 2.

B l a n k C r o s s o v e r C a r d

C o m p o n e n t V a l u e s

Resistors are all %-Watt,

5 %

tolerance. Capacitors are all

5 %

tolerance, metalized polyester.

C r o s s o v e r
F r e q u e n c y

( H e r t z )

C a p a c i t o r s

C 1 ' - C 5 '

( m i c r o f a r a d s )

R e s i s t o r s

R 1 ' - R 5 '

( k i l o h m s )

9 0 0

. 0 1 2

1 0

1 1 0 0

. 0 1 0

1 0

1 2 0 0

. 0 0 8 2

1 1

1 5 0 0

. 0 0 8 2

9 . 1

2 0 0 0

. 0 0 4 7

1 2

2 5 0 0

. 0 0 1 8

2 4

5 0 0 0

. 0 0 1 5

1 5

6 0 0 0

. 0 0 1 2

1 6

7 0 0 0

. 0 0 1 5

1 1

9 5 0 0

. 0 0 1 2

1 0

1. Crossover characteristics of the 51-5140 are tailored specifically for the

4340 Studio Monitor.

2. m ' a n d R2'only. The value for R3,' R4'and R5' is 22 kilohms, part

number 10944.

U s i n g t w o

k n , y

1 0 %

r e s i s t o r s o n a

5 2 - 5 1 2 0

b l a n k c r o s s o v e r

c a r d as s h o w n , a n d i n s t a l l i n g t h e c a r d , will c o n v e r t a c r o s s o v e r
c h a n n e l t o a u n i t y g a i n a m p l i f i e r h a v i n g o n e i n p u t a n d t w o o u t p u t s .

Audio Distribution Amplifier

A blank crossover card can be used to convert a crossover
channel to a unity gain audio distribution amplifier having
one input and two outputs. Two of these specially loaded
cards will convert the

5 2 3 4

to two independent direct a m -

plifiers, each having one input and two outputs, or the net-

work inputs can be paralleled to provide four outputs from
a single source. The "high frequency" channel will be at unity
gain when the level control is set a maximum. The control

can be turned down if loss is desired.

T a b l e 4 .

C a p a c i t o r s A v a i l a b l e F r o m J B L

The following

1 0 %

tolerance, non-polarized electrolytic

capacitors are suitable for driver protection and may be
ordered from a

J B L

Professional Products dealer or directly

from

J B L .

J B L

C r o s s o v e r F r e q u e n c y

P a r t

V a l u e

N u m b e r

( m i c r o f a r a d s )

D r i v e r I m p e d a n c e

4 o h m s

8 o h m s

o h m s

5 2 9 3 8

7 2

1 1 0 0

5 5 0

2 7 5

5 2 9 3 9

5 2

1 5 0 0

7 5 0

4 0 0

5 0 3 4 1

2 0

4 0 0 0

2 0 0 0

1 0 0 0

1 0 3 5 8

1 6 . 5

5 0 0 0

2 5 0 0

1 2 0 0

1 0 3 5 9

1 3 . 5

6 0 0 0

3 0 0 0

1 5 0 0

1 0 4 3 4

1 2

7 0 0 0

3 5 0 0

1 7 0 0

1 0 3 9 1

1 0 0 0 0

5 0 0 0

2 5 0 0

1 0 2 9 6

1 3 0 0 0

7 0 0 0

3 5 0 0

4 1 0 4 0

2 0 0 0 0

1 0 0 0 0

5 0 0 0

1 1 9 3 7

2 6 0 0 0

1 3 0 0 0

7 0 0 0

C a p a c i t o r size f o r o t h e r f r e q u e n c i e s c a n b e d e t e r m i n e d u s i n g t h e
f o r m u l a C =

] b 3 z

0 0

w h e r e C is c a p a c i t a n c e in m i c r o f a r a d s , Z is

i m p e d a n c e in o h m s , a n d F is o n e - h a l f t h e c r o s s o v e r f r e q u e n c y in
H e r t z .

F i g u r e

Direct Amplifier Modification.

C o m p o n e n t v a l u e s f o r t h e v a r i o u s f r e q u e n c i e s are listed in T a b l e 2.

C o m p o n e n t s s h o u l d rest a g a i n s t t h e p r i n t e d c i r c u i t b o a r d . L e a d s
s h o u l d b e s o l d e r e d a n d c u t f l u s h .

T h e c o m p o n e n t v a l u e s f o r o t h e r c r o s s o v e r f r e q u e n c i e s c a n b e
c a l c u l a t e d u s i n g t h e f o r m u l a R C = w h e r e R is t h e r e s i s t a n c e

in k i l o h m s , C is c a p a c i t a n c e in m i c r o f a r a d s , a n d F is f r e q u e n c y in
k i l o h e r t z . T h e r e c o m m e n d e d m i n i m u m v a l u e f o r R is 4 . 7 k i l o h m s .

T a b l e 3.
J B L C r o s s o v e r C a r d C o m p o n e n t V a l u e s

C r o s s o v e r

C a p a c i t o r s

J B L

R e s i s t o r s

J B L

M o d e l F r e q u e n c y

C 1 ' - C 5 '

P a r t

R 1 ' - R 5 '

P a r t

N u m b e r

( H e r t z )

( m i c r o f a r a d s )

N u m b e r

( k i l o h m s )

N u m b e r

5 2 - 5 1 2 1

2 5 0

. 0 1 8

4 8 4 8 1

2 4

3 5 7 5 7

5 2 - 5 1 2 2

5 0 0

. 0 1 5

4 8 4 8 0

1 5

3 5 7 5 2

5 2 - 5 1 2 3

8 0 0

. 0 2 2

4 8 4 8 2

6 . 2

3 5 7 4 3

5 2 - 5 1 2 4

1 2 0 0

. 0 0 8 2

4 8 9 4 7

1 1

3 5 7 4 9

5 2 - 5 1 2 5

5 0 0 0

. 0 0 1 5

4 8 9 2 7

1 5

3 5 7 5 2

5 2 - 5 1 2 7

7 0 0 0

. 0 0 1 5

4 8 9 2 7

1 1

3 5 7 4 9

5 2 - 5 1 4 0 '

. 0 1 8

4 8 4 8 1

2 7 *

1 0 2 5 5

Содержание 5233

Страница 1: ... Series Technical Manual Electronic Frequency Dividing Networks 5233 Single Channel 5234 Dual Channel This manual contains technical information installation and operating procedures for qualified service personnel ...

Страница 2: ... u e n c y R e s p o n s e 0 5 d B 2 0 2 0 0 0 0 H z C r o s s o v e r F r e q u e n c y S e l e c t a b l e b y p l u g i n m o d u l e 3 d B c r o s s o v e r p o i n t 10 Filter S l o p e 12 d B p e r o c t a v e I n p u t I m p e d a n c e G r e a t e r t h a n 5 0 k f l L o a d I m p e d a n c e 6 0 0 O o r g r e a t e r O u t p u t I m p e d a n c e 4 7 f l C h a n n e l Isolation G r e a t ...

Страница 3: ...s delivery of optimum power over the desired audio spectrum with minimum distor tion By dividing the audio spectrum prior to amplification the individual low frequency and high frequency amplifiers can perform their functions with greater effectiveness 2 Flexibility In sound reinforcement applications it is often desirable to combine one low frequency driver with several high frequency units to ob...

Страница 4: ...for this connection The channel 1 outputs can then be used to drive the midrange and low frequency amplifiers Typical installations are diagrammed in Figure 1 P R O G R A M S O U R C E P R O G R A M S O U R C E L O U D S P E A K E R S Y S T E M FOUR A M P L I F I E R S A C T I V E F R E Q U E N C Y DIVIDING N E T W O R K L O U D S P E A K E R S Y S T E M F i g u r e 1 Typical Installations Of The ...

Страница 5: ...peration of the 5233 or 5234 without a crossover card will not damage the unit Table 1 M a x i m u m Values For L o w F r e q u e n c y A t t e n u a t i o n Capacitors Crossover Driver Impedance Frequency 4 H 8 0 16 n 250 Hz to 500 Hz 150 xF 80 juF 40 F 500 Hz to 5 kHz 80 F 40 F 20 5 kHz and above 8 M F 5 uF 2 jiF C a p a c i t o r w o r k i n g v o l t a g e s s h o u l d b e at least 5 0 V D o ...

Страница 6: ...ew terminals located on the rear panel is provided for the low and high frequency outputof each channel Outputs will drive the line input of any conventional amplifier Typically the impedance of a bridging input is at least 5 k n usually 10 k n or more therefore two or more power ampli fiers can be driven by a single electronic frequency dividing network J Dual Channel 5234 ELECTRONIC FREQUENCY DI...

Страница 7: ...e transducers for an octave below and above each cross over frequency Two suitable methods for establishing proper phase of the components in a two way loudspeaker system are described in the following paragraphs Either one may be used depending on the availability of test equipment A three or four way system should be treated in a similar manner by first establishing the proper phase for the tran...

Страница 8: ... should be made while seated in the normal listening location If subjective analysis is to be used and the power amplifiers are equipped with level controls initially adjust the controls to one half of their full rotation and then regulate as necessary Subjective Adjustment Of Bi Amplified Systems Jhe fol lowing applies to a 5233 or to each channel of a 5234 used in dual channel bi amplification 1...

Страница 9: ... s 8 o h m s 16 o h m s 5 2 9 3 8 7 2 1 1 0 0 Hz 5 5 0 Hz 2 7 5 Hz 5 2 9 3 9 5 2 1 5 0 0 Hz 7 5 0 Hz 4 0 0 Hz 5 0 3 4 1 2 0 4 0 0 0 Hz 2 0 0 0 Hz 1 0 0 0 Hz 1 0 3 5 8 1 6 5 5 0 0 0 Hz 2 5 0 0 Hz 1 2 0 0 Hz 1 0 3 5 9 1 3 5 6 0 0 0 Hz 3 0 0 0 Hz 1 5 0 0 Hz 1 0 4 3 4 1 2 7 0 0 0 Hz 3 5 0 0 Hz 1 7 0 0 Hz 1 0 3 9 1 8 1 0 0 0 0 Hz 5 0 0 0 Hz 2 5 0 0 Hz 1 0 2 9 6 6 1 3 0 0 0 Hz 7 0 0 0 Hz 3 5 0 0 Hz 4 1 ...

Страница 10: ...ilitate servicing All components are accessible and easily replaced Parts not normally available through supply houses can be ordered from a JBL Professional Products dealer or from JBL Customer Service 8500 Balboa Boulevard Northridge California 91329 POWER 8 F i g u r e 7 Power Input 5231 and 5232 P o w e r s w i t c h a n d pilot light c o n f i g u r a t i o n s f o r t h e 5 2 3 1 a n d 5 2 3...

Страница 11: ...JBL Professional Division J a m e s B L a n s i n g S o u n d Inc 8 5 0 0 B a l b o a B o u l e v a r d N o r t h r i d g e C a l i f o r n i a 9 1 3 2 9 50682 PTM 5233 34 11 77 Printed in U S A ...

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