Polk/MOMO System Tweeters

Figure 2

Installing the Mid/Woofers in Non-Factory Locations

If you have decided to install your Polk/MOMO Series mid/woofers in locations other than those provided by the automobile manufacturer, make certain that the location you choose is clear of all obstructions, both in front of and behind the panel, before you proceed. Pay par- ticular attention to window mechanisms and any body panels critical to the structural integrity of the vehicle. The mounting depths and cutout diameters of your Polk/MOMO Series mid/woofers are listed with all the other important specifications at the end of

this manual.

1.Cut a hole in the panel (5 inch or 127 mm hole for the MM455 and 5-15/16 inch or

150.9 mm hole for the MM465).

2.Using the speaker grille as a template for marking the locations of the four screw

holes.

3.Drill the holes with a 1/8” bit.

4.Attach the screw clips to the car panel at the hole locations.

5.Cut the supplied driver wire (the heavier gauge of the two sets of wire) in half.

6.Remove the yellow crossover cover by squeezing the cover at the tabs. Attach

speaker wires to the crossover “woofer” terminals. Attach the wire with the white

stripe to the positive (+) terminal screw, and the un-striped wire to the negative (-)

terminal screw.

7.Route the driver wire from the crossover location to the mid/woofer location.

8.Strip 1/8” – 1/4” (4-6 mm) of plastic insulation from the cut ends of the driver wire.

9.Unscrew the binding post thumbnuts on the mid/woofers to fully expose the hole

in the terminal shaft and slip the other end of the wire into the holes in the input

terminals. Tighten the thumb nuts finger-tight (do not over-tighten the nuts as you

may strip the threads). Be sure to attach the wire with the white stripe to the posi-

tive (red) terminal, and the un-striped wire to the negative (black) terminal.

10.Place the grille over the driver and line up the screw holes with the screw clips on

the car panel.

11.Secure the speaker/grille assembly to the car panel with the supplied Allen

head screws.

One important advantage of component systems is their ability, when properly installed, to improve the soundstage created by the music in your car. The soundstage is the musical “pic- ture” made up of the instruments and vocalists. The difference in the soundstage will be dra- matic depending on where you mount your tweeters. We recommend a simple experiment that will help you decide the best spot for your tweeters in your car. Here are the steps:

1.Complete the installation of your entire system except for the MM400 tweeters.

2.Connect the wires provided with your tweeters to the tweeter terminals on your

Polk/MOMO crossovers. (See detailed instructions below)

3.Without running the wires through doors or under upholstered panels, connect

your Polk/MOMO tweeters to these wires. (See detailed instructions below)

4.Have a friend sit in the passenger’s seat while you sit in the driver’s seat, each

holding a tweeter in hand.

5.With music playing, position the tweeters in different locations around the pas-

senger compartment, listening for the differences caused from these placements.

We recommend using vocals for this test. You will be able to determine in a short

time the best location for your tweeters. The soundstage or image should “float”

above the dash and not be localized to the physical location of the drivers or

tweeters. Both passenger and driver should be able to hear both channels and a

stereo image.

The Polk MM400 tweeter offers two mounting

options for installation flexibility.

Mounting Option #1—Surface mounting the

MM400 Tweeter

1.Using the base of the surface mount cup as a

template, mark the screw hole and drill it using a

1/8 inch drill bit. Mark the wire holes (for the

tweeter wires), drill using the 1/4-inch drill bit.

2.Attach the surface mount cup to the panel using

supplied #4 screw.

3.Cut the supplied tweeter wire (the lighter gauge

wire) in half.

4.Strip 1/8” – 1/4” (4-6 mm) of plastic insulation

from the cut ends of the tweeter wire. Connect

this end of the wire to the tweeter terminals of

the crossover. Connect the white-striped wire

strand to the positive (+) terminal of the

crossover tweeter output and the un-striped wire

to the negative (-) tweeter terminal.

5.Route the tweeter wire from the crossover to the tweeter location. Push the red

and black tweeter wires through the holes in the bottom of the tweeter cup and

though the panel.

6.Slip the male fast-on connector on the red tweeter wire onto the female connec-

tor on the white-striped wire from the crossover and the black tweeter wire to

the un-striped wire (Figure 2). Make sure the clear plastic insulators fully cover the

fast-on connectors otherwise you may short the tweeter leads and possibly dam-

age your amplifier.

7.Mount the tweeters by gently pushing them into the surface mount cup. Be care-

ful not to pinch the wires.

8.Once the tweeter is mounted and connected, swivel the tweeter to fine-tune the

soundstage image of the system.

0 A M E R I C A N P O W E R , I T A L I A N F I N E S S E

P O L K A U D I O / M O M O D E S I G N 1