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IMR-4 I/O Interface Module

 

 

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1095 Mearns Rd. Warminster PA 18974  TEL (215) 675-7805 

 

  

poly-planar

 

       

Waterproof Marine Audio 

 

Operation 

9)  With the IMR-4 connected to the Audio Center, re-connect power, turn 

on  the  unit  and  press  the  SOURCE  button  until  the  display  indicates 
AU-1  or  AU-2.    The  SOURCE  button  will  cycle  through  all  available 
program  sources  in  the  following  order        TUNER  ->  CD  PLAYER  -> 
CD  CHANGER  ->  AU-1  ->  AU-2.    If  AU-1  or  AU-2  does  not  appear 
then it is likely that switch 1 or 2 are in the off position.  NOTE:  after 
changing  switch  1  or  2  it  is  necessary  to  reset  the  Audio  Center  by 
either removing all power from the unit, or pressing the RESET button 
through the tiny hole on the bezel behind the front panel. 

10) The Line outputs are always active when the IMR-4 is connected and 

there  are  no  special  indicators  on  the  Audio  Center  to  control  these 
output separately. 

 

 

 

Mounting 

11) The IMR-4 should be mounted to a flat surface as close to the Audio 

Center as possible.  It should be mounted in an area that is free from 
dripping water. There are 2 tabs on the plastic case that can be used 
for  screw  mounting,    or  the  unit  can  be  fixed  using  a  durable  double-
stick foam tape. 

12) The  cables  should  be  dressed  as  neatly  as  possible  and  should  be 

kept clear of other vehicle wiring.  Fold or coil any excess length of the 
gray  flat-cable.    Long  runs  of  audio  cables  can  be  very  sensitive  to 
interference  so  care  must  be  taken  to  route  them  away  from  high-
current carrying wires 

 

 

Summary of Contents for IMR-4

Page 1: ...ine level or high level power amplifier output signals Differential input circuits are used to minimize interference and to isolate grounding for connections from bridged mode amplifiers Refer to the...

Page 2: ...code in order to insure proper audio routing Expansion Modules are designed to connect together in a bus fashion The IMR 4 is a priority B3 device meaning that it would connect after any A series devi...

Page 3: ...connection Leave the caps in place on any unused connectors 6 Good quality shielded cables should be used for all connections to and from the IMR 4 7 It is recommended to use vinyl electrical tape ar...

Page 4: ...tch in the OFF Down position if you do not intend to connect any device to the AUX 2 input c Switch 3 and 4 select the input sensitivity for the AUX 1 input Set these switches in the OFF Down position...

Page 5: ...the RESET button through the tiny hole on the bezel behind the front panel 10 The Line outputs are always active when the IMR 4 is connected and there are no special indicators on the Audio Center to...

Page 6: ...uration switch is set to the ON position and all connectors on the gray ribbon cable are firmly seated b Reset the Audio Center by either pushing the reset switch using a pin or by removing power to t...

Page 7: ...Aux 2 set switches 5 6 to ON 17 Signal is too quite when AU 1 or AU 2 program is selected a Be sure that input sensitivity switches are set to the OFF position for the selected channel AU 1 or AU 2 b...

Page 8: ...to LINE or low level input b In order to achieve proper balance from an externally connected subwoofer or amplified speaker system you will need to adjust the gain control on the external device With...

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