Bogen CC4052 Guide

CC Series Amplifier
Model CC4052
Installation and Use Manual
©2012 Bogen Communications, Inc.
All rights reserved.
Specifications subject to change without notice.
54-2216-01A 1303

2
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
NOTICE: Every effort was made to ensure that the information in this guide was complete
and accurate at the time of printing. However, information is subject to change.
WARNING: To reduce the risk of Fire or Electric Shock, Do Not Expose this apparatus
to rain or moisture.
Apparatus shall not be exposed to dripping or splashing and no objects filled with liquids,
such as vases shall be placed on the apparatus.
WARNING: Only connect unit to AC mains outlet providing protective earthing connection.
NOTE: Mains plug is used as disconnect device from the mains and shall remain readily
accessible and operable.
CAUTION: These servicing instructions are for use by qualified service personnel only. To reduce the
risk of electric shock, do not perform any servicing other than that contained in the operating
instructions unless you are qualified to do so.
CAUTION: DO NOT INSTALL OR PLACE THIS UNIT IN A BOOKCASE, BUILT-IN CABINET, OR IN
ANOTHER CONFINED SPACE. ENSURE THE UNIT IS WELL VENTILATED. TO PREVENT THE RISK
OF SHOCK OR FIRE HAZARD DUE TO OVERHEATING, ENSURE THAT CURTAINS AND ANY OTHER
MATERIALS DO NOT OBSTRUCT THE VENTILATION VENTS.
Always follow these basic safety precautions when installing and using the unit:
IMPORTANT SAFETY INSTRUCTIONS
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean unit with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two
blades with one wider than the other. A grounding-type plug has two blades and a third grounding
prong. The wide blade, or the third prong, are provided for your safety. If the provided plug does not
fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles,
and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Unplug this apparatus during lightning storms or when not used for long periods of time.
13. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or
objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not
operate normally, or has been dropped.
CAUTION: TO PREVENT THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE ANY FRONT/BACK COVERS
OR PANELS. NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED PERSONNEL.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions.
The lightning flash with arrowhead symbol, within an equi-
lateral triangle, is intended to alert the user to the presence
of uninsulated "dangerous voltage" within the product's
enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons.

3
Contents
Important Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Panel Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Output Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Speaker Outputs
REC Output
Input Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Balanced- TEL Input
Balanced- LINE/MIC Inputs (1-3)
Unbalanced- LINE Inputs (1-3)
AUX Input 4
24V DC IN
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
Level Controls
Bass and Treble Controls
TEL Input Level Control
LINE/MIC Selector Switch
Mute Send
Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Accessories: Rack Mount Adapter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Limited Warranty; Exclusion of Certain Damages . . . . . . . . . . . . . . . . . . . . . . . .11

INPUT1
0 10
PEAKSIGNALPOWER
POWER
BASSTREBLE
0
-12 +12 -12 +12
0
INPUT4
0 10
INPUT2
0 10
INPUT3
0 10
CC4052
CC4052
Panel Descriptions
Front Panel
4
1
4
3
2
1. Bass & Treble
Separate controls for bass and treble allow adjustment of tonal quality.
2. Input Level Controls
A front-mounted level control is provided for each rear input.
3. Peak Indicator
This indicator illuminates when the amplifier reaches peak output level.
4. Signal Indicator
This indicator illuminates when a signal is present at any input.
5. Power Switch & Indicator
The amplifier power is switched on or off using this switch. The indicator illuminates
when the amplifier is powered on.
5

Panel Descriptions
Rear Panel
REC OUT INPUT 4
R
L
CLASS 2 WIRING ACCEPTABLE
24V DC IN OUTPUT
COM 4 8 25V 70V
+ –
INPUT 1
LINE PP MIC
MUTE SEND
ON OFF
PP
MIC
+
PHANTOM
POWER
INPUT 2
LINE PP MIC
INPUT 3
LINE PP MIC
TELIN
LEVEL
0 10
5
67
6. External DC Supply Input
Connections for an external 24V DC supply to
power the amplifier.
7. Speaker Outputs
Output terminals for connection to either 70V,
25V, or low-impedance speaker types.
8. TEL Input
This is a dedicated transformer-isolated TEL input
with input level control. This input will mute all other
inputs when active.
9. Mute Send
The ability of Input 1 to mute Inputs 2, 3, and 4
can be enabled or disabled using this switch.
10. Input 1- Balanced LINE/MIC
Input 1 will provide an electronically-balanced
input with selectable gain suitable for line-
level signals, including dry loop telephone
signals as well as balanced low-impedance micro-
phones. The associated slide switch sets the
input for LINE, MIC or PP (MIC with phantom
power). This input can be set to mute Inputs 2,
3 & 4 when active. This input is always muted
by the TEL Input.
11. Inputs 2 & 3 - Balanced LINE/MIC
Inputs 2 and 3 will provide an electronically-
balanced input with selectable gain suitable for
line-level signals, including dry loop telephone
signals as well as balanced low-impedance micro-
phones. The associated slide switch sets the
input for LINE, MIC or PP (MIC with phantom
power). These inputs are muted by Input 1 when
muting is enabled. These inputs are always
muted by the TEL Input.
12. Input 4 - Unbalanced AUX
Provides a high-impedance input through a
set of stereo combining RCA jacks. This input
is always muted by Input 1 when muting is
enabled.
13. REC Output
These RCA connectors provide a signal-level
output of the program material provided to the
speaker.
14. AC Mains
AC mains voltage will be provided through an
IEC connector with fuse holder and detachable
3-conduction IEC cord. The nominal line voltage
is 120V AC, 60 Hz.
1213
14
9
10
11
8

6
Speaker Outputs
The amplifierʼs speaker output terminal strip provides connections
for 70V and 25V speaker systems, as well as low-impedance
speakers loads of 4- or 8-ohm impedance. Connect one end of the
speaker load to the COM terminal and the other side of the load
to the terminal corresponding to the type of system being driven
(transformer-coupled 70/25V speaker or low-impedance speakers
without transformers).
REC Output
This set of RCA connectors provide a signal-level output of the
program material provided to the speaker. Both outputs supply the
same mono signal (not stereo). This signal is suitable to drive
recording devices or another amplifier. This output is after the
Bass and Treble controls.
Output Connections

7
Balanced - TEL Input
The TEL input is a transformer-balanced input. The telephone signal
should be Dry Audio with no DC voltage between the signal lines. If the
telephone has a DC voltage across it, a telephone interface adapter
should be used to provide a compatible signal for this input. Wire one of
the signal lines “+” terminal and the other to the “-” terminal. Generally
there is no shield for the telephone signal, but if the cable has one,
connect it to the G terminal. The “+” & “-” designations for this input refer
to the phase of the signal, so even if the “+” & “-” connections were
reversed the amp would still work fine. TEL Input will mute all other inputs
when active.
Balanced - LINE/MIC Inputs (1 to 3)
Inputs 1 through 3 are compatible with balanced telephone/line-level
signals and microphone-level signals. Wiring for balanced MIC and
balanced line signals are the same with the positive signal line going to
“+”, the negative going to “-” and the cable’s shield going to G. The + and -
designations refer only to the phase of the signal, so even if the + and -
connections were reversed, the amp would still work fine. See the
Operation section for details on setting the associated switches. Input 1
has the ability to mute Inputs 2, 3, and 4 when active depending on the
setting of the Mute Send switch. These inputs are always muted by TEL
Input when active.
Unbalanced - LINE Inputs (1 to 3)
Inputs 1 through 3 can be wired to accept mono unbalanced signal
sources. Convert a balanced input to unbalanced by wiring a shorting
jumper from the G terminal to the “-”. The unbalanced signalʼs hot lead is
then wired to the “+” terminal and the shield is connected to the G terminal.
AUX Input 4
Input 4 is a stereo-combining input, compatible with unbalanced line-level
(AUX) signals. This input may be muted by audio activity at Input 1
depending on the setting of the Mute Send switch. This input is always
muted by TEL Input when active.
24V DC IN
The amplifier can be powered by an external power source that can sup-
ply 24V DC and 3 amps of current. Wire the power source to the terminals
observing the polarities marked on the terminals.
Input Connections
JUMPER
HOT
SHIELD

8
Level Controls
The amplifier provides separate input level controls on the unit
front panel for rear inputs 1 through 4. Turn knobs clockwise
to increase, or counterclockwise to decrease levels.
Bass & Treble Controls
Bass and treble controls are located on the front of the unit to
provide tailoring of the unitʼs frequency response.
TEL Input Level Control
The volume level of the TEL Input is located on the rear panel
of the amplifier. Turn knob clockwise to increase, or counter-
clockwise to decrease levels.
LINE/MIC Selector Switch
Inputs 1 through 3 provide an electronically-balanced input
with selectable gain suitable for microphone and LINE/TEL
level signals.
- For balanced, low-impedance microphones, the switch should
be set to the MIC position.
- For balanced, condenser microphones, the switch should be
set to PP which will provide phantom power to the microphone.
- For balanced line-level or telephone-level signals, the switch
should be set to LINE. If using the input with an unbalanced
line-level signal, the switch should also be set to LINE (see
the section on input connections for instructions on unbalanced
input wiring).
Mute Send
The mute send switch is used to disable Input 1 from muting
Inputs 2, 3 and 4. Set this switch to ON if voice-activated muting
of Inputs 2, 3 and 4 by Input 1 is desired. With this switch set
to OFF, the amplifier will act as a 4X1 mixer with no priority
override. Note: the TEL input will always mute Inputs 1-4 and
is not defeatable.
Operation

9
Ventilation
The amplifier is passively cooled so care must be taken to make cool air available to the amplifier. Do not operate
this amplifier in environments that get hotter than 100 deg. F. If the amplifier is to be free standing, do not remove
the feet on the amp since they provide a space on the bottom of the amp for cooling air intake. Likewise do
not slide books or papers under the amp which will reduce the intake area for the cooling air. Be certain not
to place anything on top of the amp which will block the top ventilation slots. Keep anything mounted above the
amplifier at least 1.75 inches away.
Cooling
Rack Mount Adapter
A rack mount adapter (model RPK93) is available to allow mounting of either a single amplifier or two amplifiers
side by side. The amplifier and rack mount adapter use 2 rack spaces (2RU) of height.
NOTE: One (1) rack space both above and below the amplifier will also be needed to ensure proper ventillation.
Accessories

Technical Specifications
10
Output Power........................ 40W; 1 kHz @ rated distortion
Frequency Response
Balanced LINE/MIC ............ 100 Hz to 20 kHz; 0/-3 dB
Unbalanced Input................ 80 Hz to 20 kHz; 0/-3 dB
Distortion
Balanced LINE/MIC ............ < 1% THD+N
Unbalanced Input .............. < 1% THD+N
Output Regulation ................ 2 dBr or better no-load to full-load
Output Impedance ................ 70V, 25V, 4 ohms, 8 ohms
REC Output .......................... 1.14V @ Full Rated Power (FRP)
Maximum Sensitivity
Balanced MIC .................... 1.15 mVrms (200 ohms)
Balanced LINE.................... 70 mVrms (200 ohms)
Unbalanced RCA Input ...... 70 mVrms (10k ohms)
TEL Input ............................ 80 mVrms (600 ohms)
Maximum Input Level
Balanced MIC .................... 100 mVrms
Balanced LINE.................... 6 Vrms
Unbalanced Input .............. 5 Vrms
TEL Input ............................ 2.2 Vrms
Signal-to-Noise AUX
Fundamental ...................... -74 dBr min. referenced to FRP
Balanced MIC .................... -59 dBr min. referenced to FRP
Balanced LINE.................... -70 dBr min. referenced to FRP
Unbalanced Input................ -70 dBr min. referenced to FRP
TEL Input ............................ -70 dBr min. referenced to FRP
Bass & Treble
Bass .................................... +/- 10 dBr @ 100 Hz
referenced to mid-band
Treble.................................. +/- 10 dBr @ 10 kHz
referenced to mid-band
VOX Trigger & Muting
Input 1 Trigger Level .......... 25mV (approx.)
VOX Release Delay............ 4 (+/- 1) sec.
Muting Level........................ > -60 dBr
TEL Trigger & Muting
Input 1 Trigger Level .......... 22mV (approx.)
VOX Release Delay............ < 1 sec.
Muting Level........................ > -60 dBr
Phantom Power .................... 12V DC min., 18V DC max.
Max. Ambient Temp. ............ 100 deg. F (non-condensing)
Thermal Emissions .............. 141.5 BTU/hr. (full power)
External Supply .................... 24V DC; 3A
Max. Unit Dimensions .......... 8-1/4” W x 3-1/2” H x 10-3/8” D
Product Weight...................... 11 lb.
Listings .................................. Listed to UL Standard 60065
for US and Canada

The Bogen CC4052 Amplifier is warranted to be free from defects in material and workmanship for three (3) years from the date of sale to
the original purchaser. Any part of the product covered by this warranty that, with normal installation and use, becomes defective (as con-
firmed by Bogen upon inspection) during the applicable warranty period, will be repaired or replaced by Bogen, at Bogenʼs option, provided
the product is shipped insured and prepaid to: Bogen Factory Service Department, 50 Spring Street, Ramsey, NJ 07446, USA. Repaired or
replacement product will be returned to you freight prepaid. This warranty does not extend to any of our products that have been subjected
to abuse, misuse, improper storage, neglect, accident, improper installation or have been modified or repaired or altered in any
manner whatsoever, or where the serial number or date code has been removed or defaced.
THE FOREGOING LIMITED WARRANTY IS BOGEN’S SOLE AND EXCLUSIVE WARRANTY AND THE PURCHASER’S SOLE AND
EXCLUSIVE REMEDY. BOGEN MAKES NO OTHER WARRANTIES OF ANY KIND, EITHER EXPRESS OR IMPLIED, AND ALL IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED AND EXCLUDED
TO THE MAXIMUM EXTENT ALLOWABLE BY LAW. Bogen's liability arising out of the manufacture, sale or supplying of products or their
use or disposition, whether based upon warranty, contract, tort or otherwise, shall be limited to the price of the product. IN NO EVENT SHALL
BOGEN BE LIABLE FOR SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, LOSS OF
PROFITS, LOSS OF DATA OR LOSS OF USE DAMAGES) ARISING OUT OF THE MANUFACTURE, SALE OR SUPPLYING OF PROD-
UCTS, EVEN IF BOGEN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES OR LOSSES. Some States do not allow the
exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives
you specific legal rights, and you may also have other rights which vary from State to State.
Products that are out of warranty will also be repaired by the Bogen Factory Service Department – same address as above or call 201-934-
8500. The parts and labor involved in these repairs are warranted for 90 days when repaired by the Bogen Factory Service Department. All
shipping charges in addition to parts and labor charges will be at the owner's expense. All returns require a Return Authorization number.
For most efficient warranty or repair service, please include a description of the failure.
12/2008
Limited Warranty; Exclusion of Certain Damages
11

50 Spring Street, Ramsey, NJ 07446, USA
Tel. [phone] • Fax: [phone]
www.bogen.com