Sold Individually

8" 120-Watt RMS Amplified Vented Subwoofer Enclosure

Availability: In stock
$189.95 MSRP

Compact Size, Huge Performance

Don't be fooled by the compact size of the RTP8A, this amplified and vented subwoofer enclosure is designed to deliver bass like only MTX can. This low profile unit can be installed in virtually any vehicle without sacrificing space. The 8" subwoofer, integrated amplifier, and vented enclosure delivers bass you have to experience to believe.

Everything you need for a great bass system is in this package except wire! Consider adding the amp kit and interconnects to your cart (shown below).

Ask an expert Find a location
RTP8A Subwoofer Kit

Designed With 40 Years of MTX Experience

This universal amplified enclosure was designed for new enthusiasts looking to experience the awesome joy of adding great bass to their music, and for those hard core bass fans who unfortunately had to grow up and can no longer drive around with three 15" subs in their trunk.

RTP8A Subwoofer Kit

Elevate Your Sound

The 8" high output woofer used in this unit includes a lightweight and durable polypropylene cone that moves air more efficiently for impressive bass output that you can feel as well as hear.

The integrated class D amplifier can deliver up to 120 watts RMS power to the subwoofer using either high or low level inputs, so it is easy to connect to any type of radio.

RTP8A Subwoofer Kit

Easy Mounting

The unit also includes an external bass control that can be connected to the amplifier and mounted near the driver allowing for subwoofer volume adjustment on the go.

This enclosure is an easy to use and install upgrade that any music enthusiast can take advantage of with little investment.

Dimensions & Details


  • RMS Power (Watts): 120
  • Subwoofer: Single 8"
  • Height: 13"
  • Width: 13"
  • Depth: 13.75"
  • Weight: 20.8 lbs.
  • Warranty Period: 24 months from date of purchase


Returns & Warranty

30-Day Money-Back Guarantee

At MTX Audio, we are serious about sound®. Therefore, if you are not "blown away" with your purchase, for any reason, you can return any items purchased directly from that are complete and like new within 30 days. Products purchased from authorized MTX retailers must be returned through that same retailer. Products purchased through non-authorized MTX retailers may not be returned.

About Returns
Warranty Information

MTX products purchased in the USA from an authorized MTX dealer are guaranteed against defects in material and workmanship for the period of time specified below, the warranty period begins the day the product is purchased by the end user. This warranty is limited to the original retail purchaser of product and extends only to products purchased from authorized MTX resellers. Product found to be defective during that period will be repaired or replaced by MTX at no charge.

About Our Warranty