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ARCHITECTS SPECS

The unit shall be a monaural four zone audio routing matrix.  Each zone shall have a front panel volume attenuator, controlling 
both balanced XLR and unbalanced RCA output jacks.  There shall be an eleven segment LED meter and a clip LED to monitor 
the audio output level.  The unit shall have four stereo source inputs, via unbalanced RCA jacks, summed to mono and assigned 
to the zones through a front panel four by four switching matrix.  Routing assignments shall be made by an “input first” or “zone 
first” selection method and illuminated LEDs shall display the active connections.   The unit shall have, additionally, four mono 
priority audio inputs whose signal can override or mix with source inputs in any zone to which the priority input is assigned.  The 
priority inputs shall have a cascading hierarchy.   Priority Input 4 shall be overridden by Priority 3, both 3 and 4 overridden by 
Priority 2, and Priority 1 overrides all others that are assigned to the same Zone.  The priority inputs shall have balanced female 
XLR and TRS, and unbalanced RCA connections.   Input select, pad and ducking switches shall be provided on each priority 
input.  The unit shall provide connection to optional remote control accessories for volume and source selection.

The unit shall use digital signal processing to provide functions of input audio level trim on all eight inputs, maximum output level 
setting on all four outputs, twelve four band equalizers, priority signal output gain and zone assignment with ducking, LED meter 
monitoring of all functions, four by four source routing matrix, and four zone volume attenuators.  All functions shall be adjusted 
and controlled through front panel controls and rear panel switches.   A password lockout feature shall be available to prevent 
unauthorized alteration of system setup functions.  The unit shall store all system settings in non-volatile EEPROM. 

The unit shall be standard rack mount, 19” wide 3.5”(2RU) high, with a depth of 10” behind the rack mounting ears.  The unit shall 
operate with 100 to 250 VAC 50/60Hz and be fan cooled.  The unit shall be model MPM4. 

FACTORY RESET INITIALIZATION

In the event of moving the MPM4 from one installation to another, it may be desirable to return the settings of the unit to their 
factory default condition.  Disconnect the power from the unit and locate the two-pin shorting jumper on the back of the display 
circuit board behind the LED matrix inside the MPM4. (See diagram on page 5.) Remove the jumper plug and push it onto the 
Factory Reset pins #1 and #2 located on the three-pin reset header to the left. Apply power, wait for the turn on sequence to 
complete and remove power. Return the two-pin jumper plug to it's storage pins. This will restore the following initial factory 
settings.  

TABLE OF CONTENTS

Architects Specifications 

Factory Reset Initialization 

Operational Summary Reference Guide 

Normal Mode System Description

Setup Mode Password Access 

Rear Panel Description 

Setup Modes Description 

Typical Setup Procedure Guide

Block Diagram  

Theory of Operation  

Specifications  

Warranty 

2

2

3

4

5

6

8

9

10

10

12

12

Password
Zone Volume Controls
Source Inputs to Zone Outputs
Priority Assign Controls

Unlocked, Set to (Z1,Z2,Z3,Z4)
Maximum
No Routing Assignments
No Assignments, Minimum Level

Input Trim Controls
In and Zone EQ Controls
Zone Max Level Controls
Priority Trim Controls
Priority EQ Controls

Minimum
Flat
Minimum
Minimum
Flat

Содержание MPM4

Страница 1: ... or a remote control in each zone make source selection and level adjustments easy and convenient Occupying two rack spaces and designed for continuous operation the MPM4 includes all the features necessary to operate most multi zone sound system installations in night clubs sports bars health clubs offices restaurants or anywhere paging and or priority inputs are required FEATURES Simple convenie...

Страница 2: ...ttenuators All functions shall be adjusted and controlled through front panel controls and rear panel switches A password lockout feature shall be available to prevent unauthorized alteration of system setup functions The unit shall store all system settings in non volatile EEPROM The unit shall be standard rack mount 19 wide 3 5 2RU high with a depth of 10 behind the rack mounting ears The unit s...

Страница 3: ... until mode is exited It is not possible to assign anything in this mode Encoders are input level controls for source inputs 1 4 Meters measure preamp outputs Clip LED monitors source input only Control Range 20dB to 20DB Meter Range 36dB to 12dB PASSWORD ACCESS INPUT TRIM MODE MATRIX AREA ACTIONS ENCODER METER AREA ACTIONS SETUP MPM4 SETUP MODE CONTROL SUMMARY The flashing In or Zone button indic...

Страница 4: ... Setup Mode LEDs The Setup Mode LEDs are off in Normal Mode PriorityActive Mode Priority Inputs replace or mix with the Source Inputs in any Zone to which they are assigned When a Priority Input signal is received the corresponding Priority Input LED illuminates The Routing Matrix LEDs in the Zones that have this Priority Input assigned to them flash while the Priority Input is active Any Source I...

Страница 5: ...ttons and then activate it by pushing the Mode Select button which will begin flashing The password sequence must then be correctly repeated followed by pushing the Mode Select button to validate it Successful reentry will cause the Routing display to flash twice and the Mode Select button to be fully illuminated An incorrect verification sequence will cause the MPM4 to exit the Password Change mo...

Страница 6: ...et connects to the incomingAC line to the Power Supply The MPM4 operates with 100 250VAC and is rated at 25 Watts All settings of the MPM4 are saved in non volatile memory through power cycling The MPM4 powers up with the same settings that it had when power was removed All settings are recorded ten seconds after any control change is made Remote Controls The Remote Control Connections allow optio...

Страница 7: ...udio from the Priority Inputs is added to or replaces Source Input audio in any Zone to which the Priority Input is assigned The Priority Inputs assigned within each Zone have a cascading hierarchy with signal input on P3 muting P4 input on P2 mutes P3 and P4 and input on P1 mutes all three The MIC LINE female XLR Input accepts balanced mic or line signals with levels up to 24dB Phantom power is a...

Страница 8: ... by coordinating the output gain of the MPM4 to the inputs of the Zone power amps This is an analog final output gain stage with 20dB of gain and 60dB of attenuation adjustable in 1dB steps Each encoder detent equals 1dB Unity Gain is at the 0 position of the Control Position Indicator LED Output gain in conjunction with the of gain and attenuation in the Input Trim controls and the Priority Assig...

Страница 9: ...peration of the paging function For this installation a paging mic is plugged into Priority Input 1 All paging microphones used with the MPM4 should have an ON OFF switch Select the Priority Assign mode and clear all Priority Assignments all Routing LEDs off in the desired Zone Assign Priority In 1 to the Zone and set the level control to minimum Connect the paging mic to Priority Input 1 Select t...

Страница 10: ...output buffers As with the Audio Inputs the device used for Level Trims is made by Burr Brown The XLR and RCA outputs use separate buffers This allows both outputs to be used simultaneously without concern for loading Digital Signal Processor The Whirlwind MPM4 features anAnalog Devices SHARC processor This processor features very high performance and allows the use of 32 bit floating point repres...

Страница 11: ...cted Priority Input is forced on and other priorities are forced off This means that the Priority signal is routed through to the outputs un gated DSPPriority Output Levels and Priority Override Priority Levels may be adjusted in Priority Assign mode to set the level of each channel of priority audio within each zone relative to the Source Inputs When Priority Zone Level Override has been turned o...

Страница 12: ... Priority Trim Controls Priority Assign Level Controls Zone Max Level Controls All EQ Band Level Controls AC Voltage Requirement Power Consumption Size Width Height Depth Weight 12 Illuminates 1dB below 0dBfs Less than 01 Less than 01 80Hz boost variable cut 600Hz 2 5kHz 8kHz boost variable cut MPM4 Output EQ 25 20 15 10 5 0 5 10 15 20 25 10 100 1000 10000 100000 MPM4 Input EQ 25 20 15 10 5 0 5 10...

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