Single 8" Road Thunder Subwoofer Loaded Bass Tube Enclosure

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• Single 8" Road Thunder Subwoofer Powered Bass Tube Enclosure
• Polypropylene Woofer Cone
• Built-In Amplifier
• Speaker Level Inputs
• Vented Design
• Aviation Grade Carpet
• Mounting Straps Included
• Gain Rotary Knob

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  • Single 8" Road Thunder Subwoofer Powered Bass Tube Enclosure
  • Power Handling:
    • Peak: 240 watts
    • RMS: 120 watts
  • Polypropylene woofer cone offers durability and good extension for high excursion
  • Butyl rubber surround for enhanced excursion
  • Built-In amplifier mounted on back of enclosure
  • Gain rotary knob adjustable from 100mV - 6V
  • Speaker level input (Molex Plug)
  • EBC RJ-25 port for the included wired remote
  • One 10 amp ATO style fuse
  • Vented design increases bass output
  • Mounting straps included for secure installation
  • Aviation grade carpet is durable and neutral color for use with all interiors
  • Frequency Response: 35-250 Hz
  • 8 Gauge Wiring Recommended
  • Crossover Frequency: 50-200 Hz @ 12 dB/octave
  • Dimensions: 21-1/4”L x 9-7/8”W x 9-7/8”H
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty

Specifications & Details

Thunder Series
Amplifier Specifications
Number of Channels
1 - Mono
Maximum Input Gauge Size
Speaker Level Inputs
Preamp Outputs
Built-in Crossover
Low-Pass (LP)
Bass Boost
0 - 12 dB
Remote bass/level controller
Fuse Rating
40A x 1 
CEA-2031 Compliant
Subwoofer Specifications
Subwoofer Size
RMS Power Handling
120 watts
Total RMS Power Handling
120 watts
Peak Power Handling
240 watts
Total Peak Power Handling
240 watts
Woofer Surround
Butyl Rubber
Woofer Composition
Voice Coil(s)
Impedance (Per Voice Coil)
Not specified by manufacturer
Not specified by manufacturer
Frequency Response
35 - 250 Hz
Subwoofer Design
Enclosure Specifications
Box Type
Number of Subwoofers
Box Style/Shape
Second Width
Number of Terminals
Terminal Type
Box Exterior Color
Box Finish
Amplifier Wiring Kit
Is Amplifier Wiring Kit included?
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Item Details



Model Number:




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Customer Ratings & Reviews

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Customer Reviews

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This little sub ROCKS !!!

First off, this isn't a ground pounding hip-hop blasting ain't no 15"er.

What this sub does is provide a punchy bass that fills in the lows more than well in my Dodge Megacab. I rarely run my sub level at more than 3-4 and it sounds great when listening to metal, rockabilly and old school country through my JVC head unit (no other amps in my system).

I am way more than pleased with this little sub.

By braaap on March 2, 2014


found this helpful.

It bumps!

I was a bit skepticle about going for the 8in sub, but decided to go for it anyway. And wow, I was sooo surprised with how this thing rumbles! The ported hole in the back of the tube blows so much of the bass out its amazing that all that thud comes from that little tube. For that same reason it can get a little "boomy" but with the remote bass control knob it isn't a problem if it bothers you. Since the amp is built in, the install was a breeze in my 99 honda crv. I highly recommend this to anyone who wants to complete their system without having your neighbors hate you haha.

By Anthony on March 17, 2012


found this helpful.

Great little sub

I ended up buying this a few weeks ago, and couldnt be happier with it. Install was easy, it looks and sounds great. However, contrary to other reviews you CAN wake people up with this if its tuned in right, haha. It may be small but it can put out some serious bass for its size. I have it sitting behind the drivers seat of my van, and it rattles the whole van if i have it up that loud.

Again, this thing looks great, and sounds better. Got it hooked up with some 8g wire so its never going to run out of power.

if you are looking for some nice bass, but not to wake up everyone on the block, this is for you. It added the lows my music was missing and then some. I would not hesitate to buy another, or to recommend this to others

By Patrick on May 9, 2012


found this helpful.

Nobody does it better!

With proper placement for its size this things is a bass cannon that produces no standing waves that radiate throughout the vehicle.

By bassquake on May 4, 2012


found this helpful.


I bought this for my car and i was overwhelmed with performance, i recommend anyone to buy this if you are just a starter like mself and is lookin for the bass that shakes your mirrors. Perfect 10.

By S.Lotus on February 8, 2012


found this helpful.

Great little amped sub

Great ampilifed 8 inch Sub bought on there eBay store and install it with a new Pioneer FH-X700BT which was ordered from there Ebay Store as well. Filled the SUV cab with a punch that sounds awesome and fit well in the third seat slot well hidden from view. Would highly recommend to anyone looking yo just villa little low end. Very happy with this product.

By MJ on September 29, 2013


found this helpful.

great buy

I bought this item with a bit of skepticism, low price, small size, but was overwhelmed by it's performance, it is well worth it's price and with it's size will fit anywhere!

By Darrell on September 18, 2013


found this helpful.

boomin' bass

So far I am very pleased with this unit. My install is in a 1999 explorer sport so no trunk. More than enough bass for a confined space. I would recommend this for a suv.

By Cody on October 24, 2013


found this helpful.

Better than expected

I was looking for something small, complete to give me the low end I was missing. This does everything I need and more. I would recommend if you want something to fill the low bass void.

By User on October 20, 2013


found this helpful.

Solid 8" Sub

I made the mistake of getting this for my sedan. Sounds good with the back seat down but this is really made for a hatchback, SUV, or truck. Not that great on the lows but the mids are great. Songs with lows that use to slam on my 2 12"s barley hit on this but that's the only downside.

By Scott on July 14, 2014


found this helpful.


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