Bass Master Commands You, Inverting Phase

The Bass Master Commands You!

Please inspect each loudspeaker carefully. Notify your Polk Audio dealer if you notice any damage or missing items. Keep the carton and packing material. They will do the best job

Wiring Diagrams For Polk/MOMO Subwoofers

Please make certain that your amplifier is rated to carry the specified load.

of protecting your speakers if they need to be transported.

Important Information About Warranty & Installation

Subwoofers work best when installed in an enclosure of the proper size. Recommended subwoofer enclosure sizes are provided in the table below. For custom subwoofer enclosures visit http://www.polkaudio.com/car/toolbox/subboxplans.

Recommended Enclosure Sizes:

10" Subwoofer — 0.66 ft3 sealed

+ +

AMP

- -

Single 4Ω Wiring

+ -

AMP

Parallel 2Ω Wiring

Two 4Ω speakers will present a 2Ω load. Make sure that your amplifier is 2Ω stable when configured in the bridge mode. Consult your amplifier’s owner’s manual before wiring in this configuration.

12" Subwoofer — 0.88 ft3 sealed

Be careful. Subwoofer enclosures need to be installed in places where they can operate safe- ly and not endanger the occupants of the automobile. Do not install your subwoofer enclo- sure on your car’s rear deck. Do not install your subwoofer enclosure on your front dash- board or in your passenger seat. To get the safest, best performance from your Polk/MOMO Subwoofer, we recommend that you put its enclosure in your trunk. If you have any ques- tions about these issues, please call Polk Audio’s friendly Customer Service Department. Polk Audio Customer Service is available from 9am—6pm, EST, Monday through Friday, at 800-377-7655 (US & Canada only), outside the US please call 410-358-3600.

Connecting Your Polk/MOMO Subwoofers

5-way binding post connectors are located on the back of the subwoofer. For a bare wire connection, strip 1/2 inch (12.7mm) of insulation from each of the two conductors of your wire to expose the bare metal and twist each of the conductors into a single unfrayed strand (so you have two unfrayed strands). Note that one of the terminals on the woofer is red (+) and the other is black (-). Make certain that you connect the wire from the red terminal of your amplifier to the red terminal on the woofer and the wire from the black terminal of your amplifier to the black terminal on the woofer. Most wire has some indicator (such as color-coding, ribbing or writing) on one of the two conductors to help you maintain consis- tency. To connect bare wire to the binding post, unscrew the nut and insert the bare wire into the hole near the base of the binding post. Do not insert the insulated part of the wire into the hole as this will not give you a good connection. Twist the nut back down the binding post until it firmly meets the wire. Do not over tighten.

Break It In

Your Polk/MOMO Subwoofer will achieve even greater performance once it is thoroughly broken-in. To break in your new sub, play 20 to 30 hours of music at moderate levels. Get more information online at Polk University: http://www.polkaudio.com/car/faqad/index.php

Amplifier Power Requirements For Polk/MOMO Subwoofers

With one subwoofer we recommend an amplifier with a power rating of at least 200- Watts (x 1 in bridged mode) to sufficiently drive this woofer. If you have a noisy car or intend to play your system at loud listening levels, more power is necessary to achieve the best performance. More power is always better. Consult your Polk Audio dealer for specific recommendations.

Optimal Crossover Setting

We recommend using an active crossover with a 12 to 18dB per octave low pass filter slope, and setting it to an initial setting of 80 to 90 Hz as a good starting point. This is an optimal crossover setting on most vehicles.

Inverting Phase

Depending on the placement of your subwoofer enclosure and associated components, it may be necessary to invert the phase of one or another of your system’s connections in order to gain better subwoofer/mid-range blending. Inverting the phase simply means switching the positive connections with the negative connections at the amplifier. If you choose to do this, invert the phase of only one set of speakers (either your mains, or your subs, never both).

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