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If you are replacing an older or inferior woofer, the 

location is chosen for you. Make sure the woofer 

fits properly in the hole for the old woofer.

If you are creating your own new location, you 

must be careful to verify that there is sufficient 

depth to mount the woofer.

 

 

Choose a suitable 

mounting location

Choose the proper 

wiring configuration

Woofer Mounting Location

Woofer Dimensions

CAUTION

Always consider consulting a professional audio installer 

before installing new speakers. Many manufacturers locate 

speakers behind interior panels that require special tools to 

remove. Be careful and take your time.  

If you are using the speaker wire supplied with your new 

speakers make sure that you run the speaker wires only 

through safe areas. Do not let speaker wire make contact with 

metal edges or hot engine components.

Congratulations on your choice of a MBQuart Subwoofer. 

This “Quick Start” Installation guide is meant to help 

you complete a basic installation. For more detailed 

information on system setting, speaker and subwoofer 

configuration, and full specifications by model, visit our 

website at mbquart.com

It’s a good idea to confirm that you have purchased the 

correct size speakers to fit your application. If you have any 

reservations about being able to complete the installation 

yourself, we recommend contacting a professional.

A

B

C

D

E

NPW-254

10.79”(274)

2.91”(74)

1.97”(50)

6.65”(169)

9.09”(231)

Before you start

Carefully select a route for the audio signal 

wires. If using existing speaker wires, confirm 

that the wire is in good shape and not 

shorted. 

 

Route signal wires

Wiring

Wiring

A

B

D

E

C

Audio Signal

Positive

Audio Signal

Negative

4

2

8

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