Poly-planar IMR-4 Manual de usuario

IMR-4 I/O Interface Module 1

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

poly-planar

Waterproof Marine Audio

IMR-4 Auxiliary Input / Output Interface Module

Introduction:

The IMR-4 is designed to interface to the Audio Expansion Port™ of the Poly-

Planar line of Audio Centers. It provides 2 Auxiliary inputs, a fixed level Pre-

amp line output, and both front and rear variable line level outputs. All inputs

and outputs are stereo (Left + Right). The Auxiliary input channels can be

configured to accept line 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

specification section for details on signal levels and limitations.

Uses

Some of the possibilities enabled with the IMR-4 include:

Connect audio from TV, VCR or DVD

Connect audio from portable MP3, cassette, or CD player

Connect audio from VHF Radio or any other Boat electronics

Provide output for external subwoofer

Provide output for external powered loudspeakers

Provide output for separate audio zone with independent volume

Provide output for headphone connection (requires external

headphone booster)

IMR-4 I/O Interface Module 2

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

poly-planar

Waterproof Marine Audio

INSTALLATION INSTRUCTIONS

Connecting to the Audio Center:

1) Gain access to the rear side of the Poly-Planar Audio Center.

2) Be sure to remove power from the Audio Center. This is important to

avoid damage during connection. In addition, the Auxiliary input

circuits will not become active unless power is removed from the Audio

Center during connection.

3) You may already have other Expansion modules connected to your

Poly-Planar Audio Center. Each Expansion Module is assigned a

priority 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 devices, after a [B1] or [B2], but before a [B4], [C] or any

subsequent designation. The order of the devices is important to

insure proper functioning of all devices. If the IMR-4 is your only

expansion device then it can connect directly to the Audio Center.

4) Connect the IMR-4 in the proper location making sure that the ears on

the locking 26 pin connector are latched, and the blue protective tape

is removed from any connectors that need to be used.

(figure 1)

Expansion

Connector

Audio Center

back panel

Device 1

Device 2

.....etc.

...etc.

. . . .

Observe

Priority Order

Example of multiple

device connections and

order

IMR-4 I/O Interface Module 3

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

poly-planar

Waterproof Marine Audio

Connecting Audio Inputs and Outputs:

5) The connection pigtails use standard RCA type connectors. Remove

the red and white caps before making a 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 around the RCA jacks

for any permanent connections to protect contacts from moisture and

to insure that the connection cannot vibrate loose.

(figure 2)

From TV,

VCR, DVD,

Etc.

From MP3,

Cassette

Player, Etc.

To powered

Subwoofer,

amplifier,

Etc.

To receiver,

Tape deck,

Etc.

IMR-4 I/O Interface Module 4

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

poly-planar

Waterproof Marine Audio

Configuring the IMR-4

8) The IMR-4 has a bank of 6 DIP Switches. Access the switches by

pulling back the clear adhesive tab over the rectangular access hole.

Use a small screwdriver or pen tip to slide the switches on or off. Be

sure to replace the tab after setting the switches. Settings are as

follows:

a. Switch 1 enables the AUX-1 input. Set this switch in the OFF

(Down) position if you do not intend to connect any device to

the AUX 1 input.

b. Switch 2 enables the AUX-2 input. Set this switch 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 if you are

connecting a line level output device (line output from TV or

MP3). Set these switches ON (Up) if connecting from a

loudspeaker output (headphone jack or receiver speaker

output).

d. Switch 5 and 6 select the input sensitivity for the AUX-2 input.

Set these switches in the OFF (Down) position if you are

connecting a line level output device (line output from TV or

MP3). Set these switches ON (Up) if connecting from a

loudspeaker output (headphone jack or receiver speaker

output).

(figure 3)

1 2 3 4 5 6

AU-1 enable

AU-2 enable

AU-1 Left in

level

AU-1 Right

in level

AU-2 Left in

level

AU-2 Right

in level

IMR-4 I/O Interface Module 5

————————————————————————————

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

IMR-4 I/O Interface Module 6

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

poly-planar

Waterproof Marine Audio

Specifications

13) Aux 1 and Aux-2 Inputs

a. Input Impedance: 10 Kohm (Line level input)

1 Kohm (Speaker level input)

b. Input Level: 0.5 –1.5 VRMS (Line level input)

1.5 –7.0 VRMS (Speaker level input)

c. Fixed Output Level: 1 VRMS

d. Variable Output Level: 0 –1 VRMS

e. Output Minimum load: 300 ohm

Troubleshooting

14) Audio Center will not select AU-1 (or AU-2) as desired

a. Check to make sure the configuration 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 the unit. Remove power

by either disconnecting the entire Audio Center 12 pin harness

or disconnect the vehicle battery for 10 seconds.

15) AU-1 (or AU-2) appears on Audio Center although this input is unused

or unwanted

a. Set switch for unwanted Aux channel to OFF position.

b. Reset the Audio Center by either pushing the reset switch

using a pin, or by removing power to the unit. Remove power

by either disconnecting the entire Audio Center 12 pin harness

or disconnect the vehicle battery for 10 seconds.

IMR-4 I/O Interface Module 7

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

poly-planar

Waterproof Marine Audio

16) Signal seems too loud and/or distorted when AU-1 or AU-2 program is

selected

a. The input signal level may not be properly matched to the

input sensitivity of the IMR-4. If your source is connected

using a line level output then try adjusting the volume from the

source equipment. The level should be set such that AUX

input has the same apparent loudness as the radio or CD

source in the Audio Center.

b. If connected to a loudspeaker or headphone output, be sure

that both input sensitivity switches are set to ON for the

desired channel. For Aux 1 channel set switches 3&4 to ON,

for 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. Adjust the volume on your source equipment. Many devices

use a variable output and require that the volume be set nearly

to Maximum in order to achieve line level output. With most

TVs it is possible to defeat the internal loudspeaker

18) Hum or noise interference is audible when AU-1 or AU-2 program is

selected

a. Be sure that both Left and Right audio cables are properly

connected to your source. Leaving a cable unconnected will

allow interference to enter the cable

b. If connecting to a Mono source, you should use a ‘Y’ adapter

to send audio to both Left & Right channels of the IMR-4

c. Be sure that audio cable are routed away from vehicle main

wire bundles or other cables carrying large currents.

IMR-4 I/O Interface Module 8

————————————————————————————

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

poly-planar

Waterproof Marine Audio

d. In some instances it may be necessary to connect your source

equipment to the vehicle DC ground. Especially for AC

powered devices such as many TVs and VCRs.

19) Signal is too quiet / too loud from external subwoofer or powered

speakers

a. Be sure that you have connected the output of the IMR-4 to

the LINE level input of your woofer or amplifier. If input switch

settings are available then set them 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

music playing at a moderate level, adjust the gain (volume)

control until the desired sound balance is achieved.

WARRANTY

Poly-Planar marine audio systems are warranted to be free of defects in

materials and workmanship for a period of two years. Warranty is subject to

proper installation and operation within published specifications. Poly-Planar

will repair or replace, at its discretion, any unit returned prepaid to its factory

and determined to be defective. Poly-Planar Inc. is not liable for consequential

damages.

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