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Frequency Response

20Hz to 20kHz All I/O

            

Input Impedance

IN 1-4

                  

Priority In RCA, Pad ON
Priority In RCA, Pad OFF

            

Priority In XLR, Pad ON
Priority In XLR, Pad OFF

Maximum Input Level

IN 1-4

                  

Priority In RCA, Pad ON

        

Priority In RCA, Pad OFF

        

Priority In XLR, Pad ON

        

Priority In XLR, Pad OFF    

       

Common Mode Rejection

Priority In XLR, Pad Off

         

Crosstalk 

Any 2 outputs

            

Output Impedance

RCA

                   

XLR

                  

Maximum Output Level

RCA

                  

XLR

                   

Priority Ducking 

Threshold (from 0dB on Meter) 
Ducking Release Time

    

            

           

+24dBV

 

+22dBV
+8dBV
+24dBV
+4dBV

10k Ohms
5.3k Ohms
10k Ohms
2.2k Ohms
3.4k Ohms

20Hz to 20kHz +/- 0.25dB

60dB

-89dB

100 Ohms
200 Ohms

+16dBV
+22dBV

-30dB
4 seconds

-82dBV
 98dB

-98dBV
-125dBV
-119dBV

-80dBV to 0dBV
+/-20dBV
0dBV to +60dBV
+/-20dBV
-60dBV to +20dBV
+/-15dBV

19"  (483mm)
3.5" (89mm)
10” (254mm) behind ears,
1” (25.4mm) in front of ears

100-250VAC 50/60Hz

10.2 lbs (4.63kg)

SPECIFICATIONS

Dynamic Range

0dBV In, 0dBV Out                                         
Noise Level Out

           

Dynamic Range:

         

Equivalent Input Noise

In 1-4(Z source 150 ohms)

     

Priority In, XLR Pad Off

       

Priority In, RCA Pad Off

 

THD

In 1-4, 20Hz - 20kHz
Priority In

      

Clip Indicator

Encoder Control Range (1dB/detent)

Zone Volume Controls

         

Input Trim Controls

            

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

15

20

25

10

100

1000

10000

100000

Equalizer Bands

        

In and Priority In

Low Frequency

   

 

Lo Mid Frequency

            

Hi Mid Frequency

            

High Frequency

    

20Hz 
250Hz
1.6kHz
10kHz

Equalizer Bands

        

Zone Output

Low Frequency

   

 

Lo Mid Frequency

            

Hi Mid Frequency

            

High Frequency

    

WARRANTY

This product is guaranteed to be free from defects in materials and workmanship to the original purchaser for a period of 5 years from 
the date of purchase. Should service be required, return the unit postage prepaid along with the original sales receipt to:

Whirlwind
Attention - Repair
99 Ling Road 
Rochester, New York 14612

The warranty on this product shall not apply to defects or damage resulting from abuse, abnormal use or from repairs or modifications 
performed by anyone other than Whirlwind. If it is determined a manufacturing defect has occurred, Whirlwind will repair or replace the unit at 
our option and pay the postage back to you.

Less than 25W

Summary of Contents for MPM4

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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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