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The Install Bay SR8

Pair of 8" x 3/4" MDF Speaker Ring

In Stock. Only 1 Left!

List price $14.99

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with warranty

Order within 22 hrs 56 mins to ship 10/24

Arrives by Monday, Oct. 31 to zip 20147

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  • MDF Speaker Ring for subwoofers
  • Great for custom installations of subwoofers
  • Can also be used as a subwoofer spacer
  • Perfect for custom fiberglass enclosures
  • Made from durable MDF construction
  • Measures 8" x 3/4"
  • 3/4" Thick
  • Each purchase includes one MDF ring
  • Authorized Internet Dealer

Priced Per Pair

Adapter and Spacer Specifications

Compatible Speaker Size
These are the speaker sizes that the product is compatible with. For car speaker adapters, these are the sizes of aftermarket speakers that will fit inside the adapter.
Factory Opening Size Compatibility
This is the size of the factory opening that the speaker adapter is designed to fit in. This is not the size of speaker that will fit inside of the adapter, but the size of the factory opening that the speaker adapter fits into.
Spacer Thickness
This is the thickness of the spacer. Spacers are meant to extend the mounting depth. If no thickness is listed here, then the spacer/adapter is not meant to extend the mounting depth.
Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.


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Warranty and Return Policy

Parts Warranty Duration
Not warranted
Labor Warranty Duration
Not warranted
Warranty Provider
Sonic Electronix

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating


Bay City, Tx

Great fit

May 29, 2013

I needed some type of spacer for my woofer. Not really knowing that these things existed I purchased a pair. They worked perfectly. I recommend them if you encounter the same problem.

11 of 14 found this helpful

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Macomb, MI

work very well

January 10, 2016

Just what I needed to extend my sub woofer out a little.
I painted it with undercoating to make it waterproof.
I matched the texture of the factory plastic pretty well.

I wish the would make one out of nylon or some type of plastic.

0 of 0 found this helpful

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Browse 3 questions and 7 answers
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Why did you choose this?
Sonic Electronix Store
mounting depth was to shallow in my car for the Pioneer TS-SW2002D2
nicolas s on Aug 1, 2015
Thicker than most other brands at 3/4" instead of 1/2".
Michael S on Dec 12, 2014
i'm making a fiberglass enclosure for my boat
Manuel B on Jan 3, 2015
Going to install shallow woofer into door of my Mustang 05
Peter N on Nov 13, 2014
Is the 8" dimension an outer diameter or inner diameter?
Carlos W on Jul 30, 2014
Best Answer: Neither. The inner diameter is 7". The outer diameter is 8.5". This should work with most speakers that have an 8" woofer.
Reply · Report · Jonathan L on Jul 31, 2014
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Are these 8 inch diameter on the outer circle or the inner circle?
RustanL on Feb 15, 2015
Best Answer: 7" inside and 8.5" inch outside
Reply · Report · Joseph B on Feb 15, 2015
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: The Install Bay SR8