COMMUNICATION S, I N C.
MIXER/PREAMPLIFIER
MODEL DMP-06
INSTALLATION & OPERATION INSTRUCTIONS
The Bogen DMP-06 is a 7-by-2 mixer/preamplifier designed to
use Bogen plug-in modules for the flexibility to meet a wide range
of application requirements. The unit has 2 separate outputs, A &
B, each with its own master volume and tone controls. Each output
provides an independent mix of a built-in program input and up to
six module inputs. Each input has two level controls, to set the input
level of each mix. A variable muting feature (60dB range) mutes
the program input when rear panel contacts are shorted.
The Bogen plug-in modules define the the function of each
module input. Active-bus mixing allows interaction for three-level
priority. Modules set to priority level 1 can receive (are muted by)
priority signals from modules set to levels 2 and 3. Modules set to
priority level 2 send priority signals to (and mute) modules set to
priority level 1, and receive priority signals from modules set to
priority level 3. (Modules set to priority level 1 or 2 are also muted
when the rear panel MUTE terminals are shorted through a
contact closure.) Modules set to priority level 3 send priority signals
to (and mute) the program input and modules set to level 1 or 2.
I j The DMP-06 is designed for maintenance-free operation.
High-performance output circuitry assures peak performance even
under the most demanding applications. The frequency response
is flat within +0, -IdB from 20Hz to 20kHz. Distortion is less than
0 2% at maximum output across the entire bandwidth of 20Hz to
20kHz (+0,-ldB), and is typically less than 0.01%. Maximum noise
level is 72dB with the MASTER control at maximum. Input
sensitivity is lOOmV/lOkilohms for the module and program in
puts.
Each output channel provides direct 600-ohm unbalanced, and
transformer-coupled, 600-ohm balanced taps. Connection is via
screw terminals. Either mixing bus also may be strapped to other
D-Series equipment through separate bridging jacks.
Full range bass and treble controls provide ± lOdB cut or boost
at lOHz and lOkHz, respectively. Tone control defeat switches are
located in the module port cage to prevent tampering after instal
lation. The overall level for each output is set with separate
MASTER controls, and is displayed by three-color bar-type LED
output meters, which illuminate red to indicate possible signal
clipping conditions.
The unit operates from 120V, 50-60Hz AC. A rocker-type
power switch illuminates when the power is on. Dimensions are
5-l/2"H X 16-1/2"W X ll-3/8"D. The unit may be mounted in
standard equipment racks using Model DRK-3 Rack Panel Kit.
INSTALLATION
UNPACKING
The mixer was carefully checked before leaving the factory.
Inspect the shipping container and the unit closely for evidence of
Improper handling. If the unit has been damaged, place an Imme
diate claim with the dealer/distributor from whom the unit was
purchased. If the unit was shipped directly to you, file a claim with
the transportation carrier in accordance with ICC regulations.
RACK MOUNTING
The mixer is designed for installation in standard equipment
racks, using Model DRK-3 Rack Panel Kit.
MODULES
Caution
Be sure that the front-panel-mounted POWER switch is in
the OFF position before installing or removing modules.
Modules are easily inserted in any available port of the module
cage. Align the top and bottom edges of the module circuit board
in the slots of the port, and slide the module into the cage to engage
the card edge connectors. Secure the module to the amplifier with
two screws.
PRIORITY
Set the priority level on modules so equipped to the desired
level before installing them in the amplifier. The level is set by
repositioning printed circuit board-mounted shunts. The screening
on the module printed circuit board shows which pins to connect
for the desired priority level.
PRIORITY LEVEL 1 The module receives, and is muted by,
priority signals from any module set to priority level 2 or 3. A
module set to priority level 1 is also muted when the rear panel
MUTE terminals are shorted through a contact closure. (The
program input is pre-set at level 1.)
PRIORITY LEVEL 2 — The module sends priority signals to mute
any module set to priority level 1, and receives priority signals from
any module set to priority level 3. A module set to priority level 2
is also muted when the rear panel MUTE terminals are shorted
through a contact closure.
PRIORITY LEVEL 3 — The module set to priority level 3 sends
priority signals to mute modules set to priority level 1 or 2 and the
program (PGM) input. (The rear panel MUTE terminals function
at level 3 when shorted through a contact closure.)
OUTPUT TERMINAL STRIPS
Each output channel provides direct 600-ohm unbalanced, and
transformer-coupled, 600-ohm balanced taps. Connection is via
rear panel screw terminal strips.
Use single-conductor shielded cable when using the direct
output. Connect the cable shield to the GND terminal. Use two
conductor shielded cable when using the transformer-coupled
output. Connect the conductors to the HI and LO terminals;
connect the cable shield to the CT terminal.
When the transformer-coupled output is used to feed the sound
system, the direct output is available to feed a tape recorder or
similar high-impedance input.
Printed In U.S.A. S906 54-5896.02
TECHNICAL SPECIFICATIONS
Output Rating
Transformer
Direct
Frequency Response
Distortion
Signai-to-Noise Ratio
Input Sensitivity/Impedance
Module Inputs
Program Input
Bridqing I/O
Tone Controls
Bass
Treble
Program Variable Mute Range
Power Requirements 120VAC,eOHz
Dimensions
+4dBm, 600 onms (Rated), +l6dBm, 600 ohms (Maximum)
+6dBm, 600 ohms (Rated), +18dBm, 600 ohms (Maximum)
20Hz-20,000Hz, +0,-1dB
<0.2% @ Maximum Output (Over a Power Bandwidth of
2OHz-20,OOOHz, +0,-1dB), <0.01% Typical
72dB with MASTER @ Maximum
1(X)mV/10 kilohms
100mV/10 kilohms
100mV/3 kilohms
±10dB@ 100Hz
±10dB@ 10kHz
60dB (Minimum)
5-1 /2"H X 16-1 /2"W X 11-3/8“D
OPERATION
POWER
The front-panel rocker switch applies power to the mixer. An
integral pilot lamp illuminates when power has been applied.
LEVEL CONTROL
Set gain and filter controls on modules so equipped to mid
rotation. Set the mixer (CHANNEL 1 through 6) level controls to
their full counterclockwise position. Control the level of each input
on the desired bus (A or B) with clockwise rotation of the ap
propriate control. The overall output level is adjusted with the
appropriate MASTER control. The T.F.D level meter will il
luminate red to indicate possible signal clipping conditions.
TONE CONTROL
When the Tone Control switches in the module cage are in the
OUT position, the front panel tone controls are disabled and the
tone response will be flat. To enable the front panel tone controls
for either bus, set the appropriate A or B control switch to the IN
position. Bass and treble tone controls provide ± lOdB cut/boost
at lOOHz and lOkHz, respectively.
VARIABLE MUTE
Operation of the variable-mute feature (0 to 60dB range)
requires a customer-supplied contact closure across the MUTE
terminals. This contact closure will mute the program input (PGM)
and any module set to priority level 1 or 2.
MAINTENANCE
There are no user-servieahle parts within the unit. Refer all
servicing to qualified sen’ice personnel
Caution
AC CIRCUIT BREAKER
If the AC circuit breaker trips, the power switch pilot lamp will
go out and there will be no output. Set the AC power switch to
OFF and depre.ss the red button on the circuit breaker to reset it.
Return the AC power switch to ON. Tf the breaker trips again, have
the trouble Investigated by a qualified technician.
THERMAL BREAKER
The thermal breaker will open when the temperature at the
output transistor heat sink reaches 105°C (221°F) on all models. If
the breaker opens, there will be no output but the power switch
pilot lamp will remain illuminated. Wait approximately two min
utes for the breaker to reset. If the breaker resets and then opens
again, investigate the cause of the temperature overload. This may
be due to improper connections at the output terminals or excessive
environmental heat with inadequate ventilation.
SERVICE
We are interested in the maintenance of your Bogen equip
ment. If you encounter difficulty, do not hesitate to ask our advice.
Information can be obtained by writing to Service Department,
Bogen Communications Inc., P.O. Box 575, Ramsey, NJ 07446.
When communicating with us, give the model and series desig
nation (stamped on the rear panel) of your unit. Describe the
difficulty and include details on the electrical connection to as
sociated equipment. We will send you service information if the
trouble appears simple. If the amplifier requires servicing, we will
send you the name and address of the nearest Bogen Service
Agency to which you can send the unit for repairs.
When shipping the unit, pack carefully to prevent damage in
transit. Send the unit, insured and freight prepaid, via any respon
sible carrier. The unit will be promptly repaired and returned to
you collect (freight prepaid while in warranty).
A
B
•
MASTER
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•
BASS
•
•
TREBL6
•
•
CHANNEL1CHANNELSCHANNEL3CHANNEL 4 CHANNELS
•
DMP06
FRONT PANEL CONTROLS AND INDICATORS
POWER
LEVEL
A&B
A&B CHANNELS 1-6 Individual level controls for module inputs 1 through 6.
A&B PROGRAM
A&B MASTER Master output level controls.
A&B BASS
A&BTREBLE
• •
•
• • • •
• •
Rocker-type switch illuminates when power has been applied.
Bar-type LED meters provide a graphic display of the output levels.
Continuous red illumination indicates possible signal clipping.
Level controls for the fixed program input.
Provides ±10dB attenuation at 100Hz (with tone control switch IN).
Provides ±10dB attenuation at 10kHz (with tone control switch IN).
•
CHANNELS
•
PROGRAM
•
REAR PANEL CONTROLS AND CONNECTORS
LINE CORD
AC BREAKER
INPUT PORTS
PGM IN
MUTE
MUTE LEVEL
BRDG IN/OUT
A&B OUTPUTS Screw-terminal strips for connection to direct and transformer-coupled outputs.
A&B TONE CONTROLS
Three-wire line cord supplies power to the amplifier.
Press-to-reset AC circuit breaker protects against excessive current flow.
Card edge connectors accept plug-in modules.
Fixed program input for high level source (e g., tape player or phono).
Terminals provided to activate mute bus. Requires a customer-supplied contact
closure. The PGM IN input and any module set for priority level 1 or 2 will be muted
by contact closure.
Screwdiivei-adjustable mute level control for PGM IN input. 60dB range.
Allows strapping of mixing busses from another DMA amplifier. Output level is
independent of MASTER control; may be used as an output for tape recorder.
IN: Enables front panel bass and treble controls.
OUT: Bypasses tone controls for flat response.
DMP-06 — Schematic Diagram
PLUG-IN MODULES
Sound Reinforcement — Modules MM-F & MM-S
Low-impedance, transformer-balanced microphone preampli
fier module with HIGH-/LOW-CUT filters. GAIN control (25dB
range), phantom power. MM-F — female XLR-type connector;
MM-S — screw terminals (Terminal #1 is GND, #2 is LO, and
#3 is HI on all modules).
Operation
Phantom Power. Move PHANTOM P.S. jumper to the ON
position for +22V phantom supply. Select OFF position to
bypass.
Microphone Paoing - Module MP-S
Signal-activated low-impedance, transformer-balanced mic
rophone preamplifier module with HIGH-/LOW-CUT filters,
GAIN control (25dB range). Automatic Level Control (ALC),
three levels of priority and phantom power are jumper selected.
Screw terminal connectors.
Operation
Phantom Power Move PH. P.S. jumper to ON position for
+ 22V phantom supply. Place jumper on either header pin to
bypass.
ALC: Move ALC jumper to ON position; move to OFF to
bypass.
Milting Priority (using PRIORITY ASSIGN jumpers);
Level 1 — Place one jumper in the l"po.sition and store the
unused jumper on an empty pin.
Level 2 — Place both jumpers in the 2"position.
I.evel 3 — Place one jumper in the 3"position and store the
unused jumper on an empty pin.
Telephone Paging - Module TP-S
Signal-activated telephone paging module provides a 600-ohm
balanced input with -24dBm sensitivity for matching to telephone
page lines. Includes HIGH-/LOW-CUT filters and GAIN control
(25dB range). Automatic Level Control (ALC) and three levels of
priority are jumper-selected. Screw terminal connectors.
Operation
ALC: Move the ALC jumper to ON position to enable ALC;
move to OFF position to bypass.
Muting Priority (using PRIORITY ASSIGN jumpers):
Level 1 — Place one jumper in the l"positioii and store the
unused jumper on an empty pin.
Level 2 — Place both jumpers in the 2"position.
Level 3 — Place one jumper in the 3”position and store the
unused jumper on an empty pin.
Auxiliary Input - Module BL-S
Transformer-balanced auxiliary input module suitable for line
bridging or line-matching. Use the printed circuit board jumper to
select either 600-ohm input or 10-kilohm input. Screw terminal
connectors.
Line Output - Moduie LO-S
Module provides jumper-selected 600-ohm transformer-bal
anced (+4dBm) output or 0.5-watt direct output at 8-ohms. May
be used for line output from the D-Series mixing bus or for
music-on-hold applications. Parallel RCA jacks permit one music
source to be used for M.O.H. and background music. A jumperselected pad provides 20dB attenuation of the signal from the
music source. LEVEL control sets the module output level.
Operation
Output Selection: Select DIRECT or XFMR-coupled output by
placing jumper J4 in the appropriate position. (When using
the direct output, connect the 8-ohm load between screw
terminals #1 and #3. When using transformer output, ter
minal #1 is GND, #2 is LO, and #3 is HI.)
Place jumper J2 in L.O. position for line output or in M.O.H.
position for music-on-hold applications. Connect the music
source to the MUSIC IN (RCA) jack; the MUSIC OUT jack
is paralleled to allow same signal source to be used for back
ground music.
Attenuator Pad: Place jumper J3 in the 20dB position to at
tenuate the signal connected to the MUSIC IN jack. Bypass
the pad by placing the jumper in the OdB position.
Tone Signal Generation — Moduie TG-S
The module generates four distinct tones: CHIME, STEADY,
ALARM, and BURST. May be assigned to any of three levels of
priority. Requires customer-supplied contact closure between the
desired Tone and ENABLE screw terminal connectors.
Operation
Muting Priority (using PRIORITY ASSIGN jumpers):
Level 1 — Place one jumper in the l"position and store the
unused jumper on an empty pin.
Level 2 — Place both jumpers in the 2"position.
Level 3 — Place one jumper in the 3"position and store the
unused jumper on an empty pin.
Remote Volume Control or Compression — Module
VC-C
Dual-function (jumper-selected) compressor/remote volume
control module. The compressor limits the power amplifier input
signal to 1 volt to prevent overdrive. Tlie DC-operated full range
volume control allows any output setting up to the maximum pre.set
on the D-Series unit MASTER level control.
Operation
Compression: Set the PRE/AMP LINK switch on the D-Scries
unit to OUT position. Connect the PREAMP OUT jack on the
D-Series unit to the VC-C IN connector. Connect the VC-C
OUT jack to the AMP IN connector on the D-Series unit. Place
jumper J1 in the IN position to enable the compression func
tion; move to the OUT position to bypass.
Remote Volume Control: Connect a potentiometer (minimum
value 20-kilohms) to terminals #1, #2, and #3.
FM Reception - Module FM-T
FM tuner module designed as a preset background music
source. Screwdriver-adju.stcd tuning. The output is jumperselected to the mixing bus of the D-Series unit or to the module’s
RCA-type connector. May be configured to accept priority signals
from other modules. Monaural operation. Screw terminals for
antenna.
Operation
Output: Place jumper J1 in OUT position to assign tuner output
to the module’s RCA connector. Place jumper J1 in MIX BUS
position to assign module’s output to the D-Series mixing bus.
Mute: Place jumper J2 in the ON position to mute FM-T with
any level 2 or 3 priority signal. Place in OFF position to prevent
muting from priority signals.
MIC/Line Remote Control - Module MR-S
Low-impedance transformer-coupled MIC preamp, or linelevel module with HIGH-/LOW-CUT filters, GAIN control (25dB
range), phantom power. Full-range DC-operated full-range RVC
allows any output setting up to maximum preset on amplifier
channel control. Screw terminal connectors.
Operation
Input: Set Jumper J2 to MIC position for microphone input. Set
to LINE position for line level input.
Phantom Power Move jumper J1 to ON position for -t-22V
phantom supply. Select OFF position to bj^ass.
Mute: Place jumper J3 in the ON position to mute MR-S with
any level 2 or 3 priority signal. Place in OFF position to prevent
muting from priority signals.
RVC: Connect RVC-D to terminals 1 and 4.
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COMMUNICATIONS, INC.
50 SPRING STREET. P 0. Box 575
RAMSEY. NJ 07446 (201) 934-8500
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