Bogen Musical Instrument VMIX User Manual

Power Vector Mixer  
Model VMIX  
Installation and Use Manual  
© 2005 Bogen Communications, Inc.  
All rights reserved.  
Specifications subject to change without notice.  
54-2134-01A 0502  
 
Contents  
Page(s)  
PANEL DESCRIPTIONS..................................................................................................2-3  
VMIX Front Panel ........................................................................................................................................2  
VMIX Rear Panel..........................................................................................................................................3  
INSTALLATION ..................................................................................................................4  
Package Contents ........................................................................................................................................4  
Mounting ........................................................................................................................................................4  
Rack Mounting ......................................................................................................................................4  
Shelf/Table Mounting ............................................................................................................................4  
Module Installation ......................................................................................................................................4  
MODULES ............................................................................................................................5  
Output Modules ..........................................................................................................................................5  
Functionality ............................................................................................................................................5  
Input Modules ..............................................................................................................................................5  
Functionality ............................................................................................................................................5  
Priorities ..................................................................................................................................................5  
CONNECTIONS ..............................................................................................................6-7  
Unbalanced Output ....................................................................................................................................6  
Balanced Output ..........................................................................................................................................6  
RemoteVolume Control ............................................................................................................................6  
Bridging ..........................................................................................................................................................6  
Mute Control................................................................................................................................................7  
System Expansion ofVMIX Mixers ..........................................................................................................7  
OPERATION ....................................................................................................................8-9  
Front Panel Controls & Indicators ..........................................................................................................8  
InputVolume Controls and Signal / Clip Indicator ..............................................................................8  
Base andTreble Controls ......................................................................................................................8  
MasterVolume Control ..........................................................................................................................8  
Peak Hold Switch & LED Output Meter ............................................................................................8  
Power Switch / Power Indicator ............................................................................................................8  
Rear Panel Controls....................................................................................................................................9  
Balanced Out Switch..............................................................................................................................9  
Other Controls ............................................................................................................................................9  
Tone Control Bypass Switch ..................................................................................................................9  
Low-Cut Switch ......................................................................................................................................9  
BLOCK DIAGRAM ............................................................................................................10  
SPECIFICATIONS ............................................................................................................11  
ACCESSORIES ..................................................................................................................12  
WARRANTY ......................................................................................................................13  
1
 
Panel Descriptions  
VMIX Front Panel  
1. InputVolume Controls  
Each of the 8 inputs is controlled by an independent volume control.  
2. Signal / Clip Indicators  
A single two-color LED located above each channel’s volume control indicates the audio activity of that  
channel’s input. Green indicates signal present at the input; red indicates clipping of the input signal.  
3.Treble Control  
Controls the amount of cut or boost of treble frequencies above 10 kHz.  
4. LED Output Meter  
An 11-segment LED output level meter monitors the output level of the mixer.  
5. MasterVolume Control  
Controls overall level of mixed input signals.  
6. Power Indicator  
An LED indicates AC power status.  
7. Bass Control  
Controls the amount of cut or boost of bass frequencies below 100 Hz.  
8. Peak Hold Switch  
This switch determines whether the LED Output Meter temporarily holds the peak output level for signals  
above “0” on the meter.  
9. Power Switch  
Controls AC power to the mixer.  
2
 
Panel Descriptions  
VMIX Rear Panel  
1.AC Receptacle  
A grounded, unswitched AC convenience receptacle with a 500W maximum capacity is provided for external  
equipment.  
2. Unbalanced Output Jack  
Provides an unbalanced output for connection to an auxiliary or high-impedance input.  
3. Bridging Jack  
An RCA connector that allows the bridging of PowerVector mixers together for system expansion.  
4. RemoteVolume ControlTerminals  
Three terminals are provided for connection to a Bogen Model RVCP, Remote Volume Control Panel, to  
control the mixer’s motorized MasterVolume Control.  
5. Low-Cut Switch  
A slide switch (located in module bay 6) that allows roll off of frequencies below 125 Hz.  
6.Tone Control Bypass Switch  
A slide switch (located in module bay 6) that allows the effects of the bass and treble controls to be bypassed.  
7.AC Line Cord and Circuit Breaker  
A grounded, 3-wire AC line cord provides power to the mixer and is protected by a resettable circuit breaker.  
8. Balanced Out Level Switch  
Three-position slide switch that selects the signal level of the balanced output.  
9. Balanced OutTerminals  
Provides a balanced transformer-isolated output with selectable output levels.  
10. Mute ControlTerminals  
Provides access to mute buses for external control and system expansion.  
11. Module Bays  
The mixer has eight module bays, all of which can accommodate input modules, with two bays (bays 7  
and 8) that can accommodate either input or output modules.  
3
 
Installation  
Package Contents  
• PowerVector Mixer  
• Module Covers (8)  
• Instruction Manual  
12 mm Module Cover Screws (16)  
Mounting  
Rack Mounting  
When stacking equipment in a rack, the mixer should either be on the bottom of the stack or above  
equipment that does not produce heat. A rack mount bracket kit (model RPK87) is available for the Power  
Vector mixer.  
Shelf/Table Mounting  
When using a shelf or table mount, the mixer should stand alone with no equipment on top of it or below it.  
If the mixer must be stacked with other equipment, care must be taken to ensure that all the minimum clear-  
ance distances are met and that the equipment below the mixer produces little significant heat. Rubber feet are  
installed on the mixer to allow it to be placed on a tabletop.  
Module Installation  
Eight module bays are available to accept Bogen’s new advanced input modules. Module bays 7 & 8 can also  
accommodate Bogen’s new advanced output modules, thereby allowing users to customize the mixer to suit  
the needs of the installation. (The bays will not accept Bogen’s older style plug-in modules.)  
Before installing a module, read the instructions included with the module and make the desired jumper setting  
changes.  
The modules are installed by simply sliding them along the card guides inside the module bays until the  
faceplate firmly sits against the chassis, then use the two screws supplied with the module to secure it to the  
chassis.  
- CAUTION -  
DO NOT FORCE MODULES  
• Modules should slide in easily.  
• Output modules will not fit in bays 1-6.  
• Output modules can only be installed in bays 7 & 8.  
• Output modules have 8 contacts on each side.  
• Input modules have 6 contacts on each side.  
1
• Older style Bogen input modules (4 /2" in length) are  
not usable.  
4
 
Modules  
Output Modules  
Functionality  
The PowerVector mixer accepts Bogen signal-processing output modules, which offer a cost effective and con-  
venient way to add specific signal-processing capability into a system.When an output module is installed, the  
mix bus signal is automatically rerouted through the output module, whose capabilities further process the sig-  
nal before it is presented to the power mixer section.  
Up to 2 output modules can be installed in a PowerVector mixer using module bays 7 & 8 (these bays accept  
either output or input modules). When two output modules are installed, their signal-processing effects are  
cascaded.The mix bus signal will first pass through the output module in module bay 7 and then through the  
output module in bay 8. In some instances, the order in which the signal processing is applied is important and  
can be determined by the module installation order.  
Output modules automatically insert themselves into the signal path between the mix bus and the mixer out-  
put, so no further connections are required beyond simply inserting the modules. Most Bogen output  
modules include an unbalanced, Hi-Z input.This input feeds directly to the mixer’s mix bus through the front  
level control for the particular module bay and is not processed by the output module directly.The input is  
included so that the input function of the module bay is not lost when an output module is installed.  
Input Modules  
Functionality  
The Power Vector mixer accepts Bogen’s new advanced input modules, which provide a wide range of input  
types allowing the mixer inputs to be custom configured in both type and number for a particular application.  
Input modules can be installed into any of the 8 module bays and do not have to be installed in any particular  
bay order.The front panel volume control for that number bay will control the mix level of that input module.  
In addition to a host of module specific features, each input module has a priority jumper section for creating  
a priority hierarchy between different modules installed in the mixer.  
Priorities  
The PowerVector mixer allows inputs to be prioritized at four different levels.The Bogen input modules con-  
tain circuitry that can cause their outputs to be muted in response to higher priority control  
signals from other input modules. Each input module also contains circuitry that sends a mute control signal  
out to other modules when it becomes active (all input modules become “active” when they receive an audio  
input). Active modules may be prevented from sending their audio onto the mix bus by a higher priority  
module that is also active.  
Input priorities are set through a simple jumper field on the module. It is also possible not to assign a priority  
level to an input module. By doing so, that module will never be muted by another input module in the  
mixer.  
5
 
Connections  
Unbalanced Output  
TheVMIX includes an unbalanced output for connection to an auxiliary  
or high-impedance input using an RCA connector. Output level is 0 dBµ  
when meter reads “0”. Maximum output is +20 dBµ.  
Balanced Output  
Three terminals are provided for the transformer balanced output of the  
PowerVector mixer.  
Note:The output signal level is selectable for +4 dBµ, -10 dBµ, or -50 dBµ.  
Remote Volume Control  
Three terminals are provided for remote control of the MasterVolume  
control on the front panel.This control is motorized, allowing full con-  
trol over the setting of the master volume. Shorting the UP terminal  
with the C terminal will rotate the MasterVolume control in a clockwise  
direction, increasing the volume level. Shorting the DN terminal to the  
C terminal will cause the MasterVolume control to rotate in a counter-  
clockwise direction and decrease the level of the MasterVolume control.  
The impedance of the shorting connections must be less than 100 ohms  
in order to operate the control. The Bogen Remote Volume Control  
Panel (Model RVCP) provides a simple and elegant means of remote  
control. Alternatively, a SPDT spring-loaded, center off switch or two  
SPST push-button switches can provide the necessary contacts for  
remote control.  
Bridging  
This connector makes the Power Vector’s mix bus available externally  
and allows the connecting of PowerVector mixers for system expansion  
and simple room combining.  
This function is bi-directional. Any signal received will be amplified and  
any signal sent can be used by another Power Vector mixer.The signal  
levels at the bridging jack will drop by one-half with two PowerVectors  
tied together and by two-thirds with three units tied together. Because  
of the attenuation of the bridging signal, due to the signal loading of  
other PowerVectors, it is not recommended that more than three units  
be connected together. See Mute Control section and the illustration on  
next page for additional information.  
6
 
Connections  
Mute Control  
Each priority bus (High, Medium, and Low) can be externally activated.  
This allows priority buses of two or more Power Vector mixers to be  
linked together for system expansion purposes.A particular mute prior-  
ity can be externally forced by shorting that priority's bus terminal to  
the C terminal of the Mute Control (the C terminal is the system  
ground).Forcing the H priority bus this way will mute all modules except  
for modules set for priority level 1 (highest priority). Forcing the M pri-  
ority bus will mute modules set for priority levels 3 or 4, but not levels  
1 or 2, and forcing the L priority bus will only mute modules set at pri-  
ority level 4.  
System Expansion of Power Vector Mixers  
By interconnecting the Bridging Connectors and Mute Control lines, it is  
possible to connect two or more Power Vector Mixers. It is not recom-  
mended that more than three mixers be bridged together due to bridg-  
ing loss.When making mute control connections, make certain that the  
wiring is consistent (H to H, M to M, L to L, and C to C).  
Power Vector Mixer #1  
Power Vector Mixer #2  
Power Vector Mixer #3  
7
 
Operation  
Front Panel Controls & Indicators  
InputVolume Controls and Signal / Clip Indicator  
Each input module may be individually controlled by its corresponding  
volume control knob.A single LED located above each channel’s volume  
control indicates the audio activity of that channel’s input. Green indi-  
cates signal present at the input. Red indicates that the input signal com-  
ing from the input module into the mixer is clipping and distorted.This  
is caused by either an input signal that is too high or an input module  
volume control (gain) that is set too high.  
Bass andTreble Controls  
The treble control has a cut/boost range of +/- 10 dB at frequencies  
above 10 kHz and provides a roll off after 20 kHz to reduce gain above  
the audio range.The bass control has a cut/boost range of +/- 10 dB at  
frequencies below 100 Hz.  
MasterVolume Control  
The overall volume level of the mixer is set by a MasterVolume control.  
The MasterVolume control is motorized and can be controlled by man-  
ually adjusting the knob or by a remotely-mounted control  
station. Connections and requirements for the remote control station  
are described in the Connections section, under RemoteVolume Control.  
Peak Hold Switch & LED Output Meter  
The LED Output Meter is an 11-segment meter with a defeatable peak  
hold function.When the peak hold is “on”, any meter indication of “0”  
or above will temporarily remain while the meter continues to indicate  
the instantaneous signal level.  
Power Switch / Power Indicator  
TheAC power to the amplifier is controlled by the Power rocker switch.  
A red LED indicator lights to confirm the power on status of the mixer.  
8
 
Operation  
Rear Panel Controls  
Balanced Out Switch  
A three-position slide switch selects the signal level of the balanced out-  
put.Output levels of +4 dBµ,-10 dBµ,and -50 dBµ are available.The indi-  
cated output level corresponds to “0” on the level meter.  
Other Controls (Located In Module Bay 6)  
Tone Control Bypass Switch  
A slide switch that can bypass the effects of the Bass andTreble controls  
is located on the back plane of module bay 6. It is sometimes desirable  
to bypass the tone controls when other forms of system equalization are  
used.A screwdriver can be used to set the switch.The switch must be  
set before a module is installed in this bay.  
Low-Cut Switch  
The PowerVector mixer provides a low-cut filter that rolls off frequen-  
cies below 125 Hz.The slide switch for this function is located on the  
back plane of module bay 6. A screwdriver can be used to set the switch.  
The switch must be set before a module is installed in this bay.  
9
 
Block Diagram  
10  
 
Specifications  
Output Level  
Balanced:  
Unbalanced:  
Selectable +4, -10, -50 dBµ (typical when meter reads “0”)  
0 dBµ (typical when meter reads “0”)  
Max. Output Level  
Balanced:  
+18 dBµ  
Unbalanced:  
+20 dBµ  
Frequency Response:  
+/- 1 dB (20 Hz to 20 kHz)  
Distortion:  
Signal-to-Noise  
Fundamental:  
0.01 (@ +18 dBµ THD+N, 20-20k BW Limited)  
-99 dB*  
-94 dB*  
-64 dB*  
-92 dB*  
w/ AUX MAX1R Module:  
w/ MIC2X Module:  
w/TEL1S Module:  
Tone Controls  
Bass Frequency:  
Treble Frequency:  
Low Cut Frequency:  
100 Hz (+/- 10 dB minimum)  
10 kHz (+/- 10 dB minimum)  
125 Hz @ -6 dB/octave  
Signal / Clip Indicator  
Signal DetectThreshold:  
Signal Indicator HoldTime:  
Clip DetectThreshold:  
10 mV @ output of module  
50 mS green indicator  
6V @ output of module  
50 mS red indicator  
Clip Detect HoldTime:  
Output Impedance  
Balanced:  
50 ohms @ +4 dBµ, 600 ohms @ -10 dBµ, 5 ohms @ -50 dBµ  
100 ohms  
Unbalanced:  
Power Consumption:  
AC Power Receptacle:  
Dimensions:  
21 watts  
500 watts maximum power, unswitched  
1
1
16 /2" W x 3 /2" H x 12" D  
Product Weight:  
18 lb.  
Safety Approvals:  
cUL (U.S.A. & Canada)  
* Referenced to max output level, 20-20 kHz bandwidth limited.  
All specifications subject to change without notice.  
11  
 
Accessories  
A variety of accessories are available.  
RPK87 - Rack Mounting Kit  
PVSC - PowerVector Security Cover  
Prevents tampering with system settings  
Power and meter switches accessible  
Simple installation  
Adapts PowerVector Mixer for 19" rack mounting  
Heavy gauge steel construction  
1
Fits PowerVector Mixer into 2 rack spaces (3 /2")  
RVCP - RemoteVolume Control Panel  
PVMC - PowerVector Module Cover  
Push-button operation of motorized master volume control  
Fits in standard single gang electrical box  
Decora style cover plate  
Prevents tampering with module controls  
Adaptable for different module types  
Covers unused module slots  
12  
 
Warranty  
Bogens VMIX is warranted to be free from defects in material or workmanship for three (3) years from the date of sale to the orig-  
inal purchaser. Any part of the product covered by this warranty that, with normal installation and use, becomes defective will be  
repaired or replaced by Bogen, at our option, provided the product is shipped insured and prepaid to: Bogen Factory Service  
Department, 50 Spring Street, Ramsey, NJ 07446, USA. The 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 instal-  
lation 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 BOGENS SOLE AND EXCLUSIVE WARRANTY AND THE PURCHASERS  
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 other-  
wise, shall be limited to the price of the product. In no event shall Bogen be liable for special, incidental or consequential dam-  
ages (including, but not limited to, loss of profits, loss of data or loss of use damages) arising out of the manufacture, sale or sup-  
plying of products, 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.  
08/10/2004  
13  
 
50 Spring Street, Ramsey, NJ 07446, U.S.A.  
 

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