Bogen CHS 35B 60B 100B Operating Manual

This is the 7 pages manual for Bogen CHS 35B 60B 100B Operating Manual.
Read or download the pdf for free. If you want to contribute, please mail your pdfs to info@audioservicemanuals.com.

Page: 1 / 7

Extracted text from Bogen CHS 35B 60B 100B Operating Manual (Ocr-read)

Page 1

PUBLIC ADDRESS
AMPLIFIERS

BOGEN.

in A DIVISION OF LEAR SIEGLER, INC.

Models OHS-35B, CHS-SOB
8t CHS-1OOB

DESCRIPTION

The Bogen Models (HS 158. ('HS-otlB.and CHS-IOOB solid-
state public address amplifiers are rated 35 watts. (10 watts. and IOO
watts, respectively.

Two input channels are provided for lowvimpcdancc balanced
microphone inputs. Both channels may be converted for use with
high-impedance microphones by means ofrearrangingjumpers on
the printed circuit board (see schematic diagram. note 4). A
phantom supply is provided for the use of condenser microphones.
One of these cltannels is equipped with built-in microphone
precedence. actuated by an external switch. and remote volume
control (with optional RVC-ZB).

An optional accessory. PM M-ZH. designed to mount on the
front panel of the amplifier. provides two additional microphone
input channels. The" added channels have all the capabilities of
the basic channels. uch as low-Impedance microphones. prccc
dence and. or an additional remote volume controlled channel
with an RV(-2II unit and the same accessories are applicable to
them.

Two auxiliary input channels. with separate controls. are
provided on the amplifier for a tuner. tape/cassette player. a
turntable With a ceramic cartridge. or a Multiple Tone Generator.
Model T048. l'hese channels and one microphone channel can
he muted for special announcements over another microphone
channel.

IN and GUI receptacles are provided for easy connection ol'a
rcverh unit or an acoustic equalircr to the amplifier.

Provtsion is made for using an accessory transformer to feed a
signal from a 500, GOO-ohm telephone line into the ampliﬁer or to
connect the output ofthe ampliﬁer to a 500/600-ohm telephone line.

The output of the ampliﬁer can also be connected from the
Boosterjack to a booster ampliﬁer or from the Tape Outjack to a
tape/cassette recorder. The tape output jack is independent ofthe
ampliﬁer master volume and tone controls.

INSTALLATION

The ampliﬁer was carefully checked before leaving the factory.
Inspect shipping container and unit carefully for indication of
improper handling. If the unit has been damaged. make an
immediate claim to distributor from whom it was purchased. If the
ampliﬁer was shipped to you. notify the carrier without delay and
place your claim.

POWER AND GROUNDING

The ampliﬁer is furnished with an ac line cord terminated in a
three-prong plug. The line cord should be plugged into a three-
wire grounded outlet providing a nominal lZO-Volt. 60 Hz power
source. This will ground the ampliﬁer as well as supply power to it.

It is important to ground the ampliﬁer. I'hereforc, ifa three-wire
outlet is not available. an adapter such as I.cviton No. 5017 should
be used to convert a standard two-wire outlet for use with three-
wirc plugs. The adapter is provided witha grounding pigtail which
should be connected to the screw holding the wall plate to the
receptacle.

In some areas. the wall plate screw is not grounded. In this case it
will be necessary to connect a grounding wire from the (END
terminal on the rear chassis ofthe ampliﬁer to a water or steam pipe.

AUXILIARY POWER

Caution
Uti- the ()N/ ()II ' ili'h (m a phonograph or
other urtesmrr unit connected to the auxiliary
receptacle. as the power switch on the alrtp/tﬂer
does not control Ihtlt' receptacle.

l he auxiliary power receptacle on the rear cha isa three-Wire
grounded outlet which can supply power to ace .. ry equipment
in the sound system. He sure that the accessory component does
not require more than 300 watts. The power switch does not
control this receptacle.

Associated equipment connected to the auxiliary receptacle
with a three-prong line cord will be grounded. providing the
ampliﬁer line cord has been properly grounded.

INPUT CONNECTIONS

LOW-IMPEDANCE BALANCED MICROPHONES: The
amplifier is designed for direct connection of low-impedance
balanced microphones to the two MIC input receptacles of the
amplifier. The microphone lead should be a two-conductor
shielded cahle terminated in a Cannon XLR-SlZ-C or Bogen
CON-2 connector. as shown in Figure I.

HIGH-IMPEDANCE MICROPHONES: The microphone lead
should bea single-conductorshieldcd cable under 35 leet in length
and terminated in a Cannon XI.R~J12~C or Bogen CON-2
connector. as shown in Figure I. For information regarding the
use of high-impedance microphones. see notes on the schematic
diagram,

MICROPHONE PRECEDENCE: A builtvin circuit provides
microphone precedence at MIC I. over the MIC 2 and AUX
channels. An SPST normally-open switch is required for this
function. When the contacts are closed. the MIC 2 and AUX
channels are muted.

Printed in USA 8305 54-5747v02

Page 2

TECHNICAL SPECIFICATIONS

CHS-IOOB

POWER OUTPUT I00 watts

(RMS @ IMHZ)
FREQUENCY RESPONSE

SENSITIVITY
(for full output)

HUM & NOISE
(below rated output)

CHS-SSB
35 watts

CHS-6OB
60 watts

:tZdB 70 Hz to I2 kHz

Aux 0,|5V: Hi-Z Mic 3mV; Lo~Z unbalanced 0.3 mV; Lo-Z balanced 0.3 mV

Mic-60d B; Aux-7MB

2 l.o-Z balanced Mic inputs (200 ohms), each convertible to Hi-Z or condenser mics

2 Aux. (500k). Rcverb (20k)

8. I6 ohms. 25 V. center
tapped (I04 ohms) and 70 V.
(82 ohms) hal. lines,

8, lo ohms. 25 V. center
tapped (18 ohms) and 70 V.
(I40 ohms) bal, lines.

Tape (650 mV at 1k ohms); Booster (5V at l0k ohms); WMT-l output 500/600 ohms

INPUTS
(Impedance)
OUTPUTS 4. 16 ohms. 25 V. center
tlmpedance) tapped (6.25 ohms) and 70 V.
(49 ohms) hal. lines.
CONTROLS

TONE ('ONTROI. ACTION

SEMICONDUCTORS I} silicon transistors
l Iener diode
7 silicon diodes

2 integrated circuits
POWER CONSUMPTION

LINE FUSING 2.5A Hold

DIMENSIONS

SHIPPING WEIGHT 19% lbs. (8.85 kg.)

AUX l at AUX 2 INPUTS: 'l wo auxiliary inputs with separate
controls are provided lor high-level. high impedance inputs. These
may bc used to connect a tuner. tape» cassette player. record player
utilizing a ceramic cartridgc. or WMT-I telephone linematching
transformer. An input signal 0! 0.15 volts is required to obtain full
output Irorn the ampliﬁer.

lsc stnglewonductor shielded cahlc terminated in an RCA
phono plug lor connectingauxiliary component. II' hum is experi-
enced alter making connections. run a ground wire between the
chassis or the auxiliary unit and the (EN I) terminal ollheampliﬁer.

H -74 .2335 UI

n /\
3. _ _ _ _ _ . . _|
CANNON
HluH IMPibANCE MICROPHONE XLR ' 3 I25
OR
BOGEN
CON-Z

A A
-l-¥-_-l-+-- «J
\l
BALANCED
LOW IMPEDANCE MICROPHONE

Figure l - Microphone Cable Connections

I20 V. 60 Hz. 2.5 A. 300 W.

Reverh165()mV at Ik ohms).

Mic. l. 2. Volume; Aux. l. 2. Volume: Master Volume. Bass. 'lrcblc, Power Switch (lighted)

Bass 50 Hz + 9 dB to |2dB: 'lrchlc I2 kH/ 9 dB to 712 dB

ll silicon transistors
| Iener diode
7 silicon diodes
2 integrated circuits
I20 V. 00 HI.0.86 A, 96 W.

.93 A H old

ll silicon transistors
I 7cncr diode
7 silicon diodes

2 integrated circuits

120 v.60 H7. [.6 A. 120 W.

Rescttahle (ircuit Breaker
|.65A Hold

lol/z W x l2 I) x 3% ll (4L9 x 30.5 x9.5 cm)

In lbs. (7.26 kg.) l4 lbs. (6.35 kg.)

OUTPUT CONNECTIONS

SPEAKERS: The ampliﬁer may be used with most conventional
speaker systems. For detailed information on the installation of
multiple speaker systems. refer to the Speaker Installation Bulletin
(No. 546001) included with this tinit.

In permanent installations. where speakers will remain con~
nectcd to the ampliﬁer. connect the speaker system directly to the
Speaker Output terminals on the rear of the ampliﬁer. Connect
one speakcr lead to the COM terminal and the other to the
terminal corresponding to the impedance of the speaker system.
For balanced output lines. remove the link between COM and
GN D output terminals. If the line is shielded. connect the shield to
GND. For unbalanced speaker Iincs. close the link between COM
and GND output terminals. Class 2 wiring may be used.

TAPE OUTPUT: A tape recorder may be driven from the TAPE
OUTjack on thcampliﬁcr, In this case. the output is not subject to
the volume or tone setting of the ampliﬁer and is controlled at the
tape recorder. A patchcord terminated ina standard phono plug is
connected between the TAPE OUT jack on the ampliﬁer and the
input of the tape recorder.

BOOSTER OUTPUT: The ampliﬁer may be used to drive a
boostcrampliﬁcr. Connect a patch cord with an RCA phono plug
from the BOOSTER jack on the rear panel of the ampliﬁer to the
input of the booster ampliﬁer. The output at thisjack is controlled
by the ampliﬁcrs volume.

Page 7

it.

When replacing the output transistors. clean all foreign matter
from the heat sink, insulator. and transistor. Brush on a light
coating of silicon compound such as Dow Corning No. 340 to
completely cover both surfaces of the insulator (Part No.
I6-9278-0I). Place the insulator between the heat sink and the
replacement transistor. Use the original transistor mounting
hardware to mount the replacement transistor.

The preceding procedure may require some dismantling ofthc
heat sink. It is therefore important roalso clean the contact surface
of the thermal breaker and to apply the silicon compound to the
thermal breaker before reassembling the heat sink. Make certain
the thermal breaker makes ﬁrm contact with the heat sink.

BOGEN SERVICE

We are interested in your Bogcn equipment for as long as you
have it. If trouble ever develops, do not hesitate to ask our advice
or assistance. Information can be obtained by writing to Service
Department, Bogen Division. P.O. Box 500. Paramus. NJ. 07652.

When communicating with us. give the model and series
designation of" your unit. Describe thcdifﬁculty and include details
on the electrical connections to associated equipment. and list such
equipment. When we receive this information, we will send you
service information if the trouble appears to be simple. If the
trouble requires servicing. we shall send you the name and address
of the nearest Eugen authorized service agency to which you can
send your unit for repairs.

When shipping your unit. pack the ampliﬁer well. using the
original shipping carton or a similar container and ﬁller material
to prevent damage in transit. Remove any plug-in transformer

from the p.('. board before shipping. Send the unit. fully insured

and prepaid. via UPS or any responsible carrier, The unit will be
promptly repaired and returned to you collect.

REPLACEMENT PARTS

Most components used in the amplifier are standard parts
available through reputable parts jobbcrs, The parts listed here
may be obtained from Bogen distributors. service agencies or
directly from the factory. When ordering a part. specify a part
number. the model of the unit. and give the series designation.
which is a letter followed by numbers, printed on the chassis. For
parts on circuit boards. also give the component board assembly
number. which begins with "45."

When replacing transistors. use those made by the speciﬁed
manufacturers. Transistors from other suppliers may not be
satisfactory.

Ref. No.

CB. 22. 29

C10. 11,40

C17. 19

C21. 33

C30

C31

C38

CR1

CRZA.
28. 3.4

ICI. 2

01-4. 7

R9. 10. 34.
35

R43. 52

R51

R71. 72

TI, 2

C103
C8101

C8102
CRIN-104
0101. 1112
0103. 104
mm, 103
R104. 105
Rl06
sw101
T101

T102

Part No.

457186-05
79-008-033
79-008-046
79-008-049
79-008-062
79-1 19-001
79-00805 8
79-1 1 9-01 5
96-5 344-07

96-5333-01
96-5436-01
96-5213-01
96-5298-01
96-52834
96-5357-01

96-5356-Ol

77-001-808
77-00 1-8 10
77-001-8 12
76-107-096
831-058-000

79-509-051
79-509-052
79-509-053
94-0023-03
94-0023-05
94-0023-08
94-0014-07
96-524101
96-53185-01
905385-01
76-1 16-003
76-1 16-003
75-742-101
81009-035
821-805-010
83-809-000
83-8 14-010
83428-010
83429-010
831-430-010

03-0670-01
03-0671-0 |
14-9088-01
70-9313-01

Description
PC Board

P.C. Board Assembly
Cap.. Elect. 2.2;1F, 16V
Cap.. E1ec|.. 22111:. 35V
Cap.. Elect.. $00,111:. 35V
Cap.. Elect.. IOOnF, 50V
Cap.. Elect.. 470;.1F. 63V
Cap.. Elect., IOnF. 50V
Cap.. Elect., 3300iiF. 63V
Diode. cher. 24V. 2W

Diode. 400 prv (13) 1A

1C, H1 lF3

Transistor, 2N5089/ KSC9451.

Transistor. SPSI910/ KSC945L

Transistor. MPS-ASS/ KSA539Y

Transistor. 250389(P)/
ZSDJISDiTlPJIA/KSDZSSY

Transistor. ZSBSlZ(P)/
ZSHSO7D/ '1'l PJZA/ KSAO |4Y

Control. 1 megobm
Control. 100k!)
Control. 200k
Resistor. .8211. 2W
Transformer. Mic

Chassis Electrical C amportmtx

Cap.. Elect. 1500;;F. 75V (Cl-{$358)
Cap, Elect. 2000/41? 75V (CHSbOB)
Cap.. Elect. 3000111. 75V (CHSIOOB)
Circuit Breaker. IA (CHS3SB)

Circuit Breaker. 1.0a (CHSéOB)
Circuit Breaker, 2.5A (CHS 1008)
Thermal Breaker

Diode. 300prv @ 3A

Transistor. 2N3055H RCA

Transistor. 2N3055H RCA (CHSIOOB)
Resistor. .270. 7W

Resistor. .2711. 7W (CHSIOOB)
Resistor. 10011. 7W

Rocker Switch. Lighted. 10A SPST .
Transformer, Power (C H5355)
Transformer, Power (C H8603)
Transformer, Power (CHSlOOB)
Transformer, Output (CHSJSB)
Transformer. Output (CHSWB)
Transformer. Output (CHSlOOB)

Mechanical Components

Knob (0-10)

Knob (5-0-5)

Foot

Heat Sink Clip (2)