Bazooka BTA8250D

8" 250W BT Series Class D Amplified Subwoofer Bass Tube (BTA-8250D)

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The Bass Tube Difference:

Adding quality bass to your car has never been easier! With the Bazooka bass tube, installing a subwoofer becomes fast, simple, and provides excellent results. No matter what size of vehicle you have, Bazooka has a bass tube solution for you. Included in the box is a factory interface harness that is compatible with all cars. It does not matter if you have a compact Mini Cooper or a full size Chevrolet Suburban, the Bass Tube will give your vehicle low bass that it was lacking with it's factory audio system. When a subwoofer is installed, you will experience a 30% increase in your music. Bass is necessary to complete the sound stage of any listening experience. It is the subwoofer in the car's audio system that gives music its fullness and enhances the playback of each instrument's sound. For quality bass you can rely on, a Bazooka Bass Tube is exactly what you are looking for!

Acoustic Dampening Fiber

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Bazooka BTA8250D Features:

  • Bazooka powered 8" bass tube
  • Built-in Class D amplifier
  • Power Handling:
    • Peak: 250 watts
    • RMS: 200 watts
  • Treated foam surround
  • Paper cone with polypropylene dust cap
  • Mounting straps, wire harnesses and hardware included
  • 4 Ohm Impedance

    Bazooka's Patented Tube Enclosure

  • Preamp inputs
  • Speaker-level inputs
  • Optional speaker-level outputs for connecting a 2nd Bass Tube
  • Plastic woofer grille
  • Adjustable low-pass filter: 60-250 Hz
  • Frequency Response: 30-250 Hz
  • Sensitivity: 102 dB
  • Dimensions: 8-5/8"W x 10-1/8"H x 19-3/4"D
  • Authorized Internet Dealer
  • 1-year Manufacturer's warranty


Bazooka Bass Tube Unique Features:

The grill is both decorative and protective, preventing the Subwoofer from accidental damage from other items, such as golf clubs, groceries or book bags that might be tossed into the cargo area where the Bazooka Woofers are typically mounted.

Bazooka's highly efficient, customized woofers are specially designed and reinforced for use in the Bazooka Bass Tube enclosure, producing a pure piston action and generating the maximum bass output possible.

Edge Roll
All Bazooka Woofers used in Bass Tube enclosures feature large, high excursion, lightweight foam edge rolls to maximize their efficiency and overall bass output.

Tube Enclosure
A tube is a natural pressure vessel, and Bass is about pressure. The patented Bass Tube enclosure creates a natural, uniform, hydraulic transfer of the Bass energy produced by the woofer.

The port opening between the Tube Enclosure and the Port Tube allows for efficient transfer of bass. Bass Tubes enclosures utilize "Bass Reflex" technology to take advantage of both the forward and backward of the woofer, wasting no bass energy.

Port Tube
The bass energy created by both the forward and backward motion of the woofer are time aligned so that 100% of the woofer's output is concentrated into one output point.

Acoustic Damping Fiber
The acoustic damping material helps lower the resonance of the enclosure and simulates an increased air space.

Integrated Amplifier
The integrated amplifiers are performance matched to the specific woofers used in Bass Tube enclosures to ensure that every watt of power is efficiently turned into bass performance. Having the amplifier integrated into the enclosure simplifies the installation and eliminates power loss.

Corner Loading
Bass Tube enclosures are specifically designed to take advantage of the natural amplification characteristics that occur when a subwoofer is placed into the corner of a vehicle. The corner acts like a megaphone, substantially increasing bass performance.

Double Down
While this single amplified tube will surely deliver the goods, if just want more bass, simply connect a Passive Tube (sold separately) to the optional speaker level output and double your bass output.

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How Do I Install a Bazooka Bass Tube?

Installation is Simple! The bass tube comes with straps to keep the sub securely mounted, while still making removal quick and easy if you need even more cargo room. Optional Chrome-Plated UMS Brackets give a flashier look, as well as a more secure, permanent mounting when removal isn't a problem.

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Package Contents:

  1. Bazooka BTA8250D BT Series 8-Inch 250W Class D Amplified Tube,
  2. Wiring Harness
  3. Installation Hardware
  4. Instruction Manual

Product History:

Bazooka BTA8250D thumbnail
(newest, current model)
Bazooka BTA8200 thumbnail
(previous model, replaced by Bazooka BTA8250D)

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

Total Peak Power Output
The total peak power output is measured as the wattage per channel multiplied by the number of channels, and is calculated at the lowest level of operating impedance.

It is measured during a brief musical burst, such as a sudden drum accent. Some manufacturers display peak power ratings on the face of their products to increase the appeal.

The RMS power rating is more accurate, and we recommend using it for product comparison.

250 watts
Total RMS Power Output
Total RMS power is measured by multiplying RMS power per channel by the number of channels, and is calculated at the lowest level of operating impedance.

RMS power is the amount of continuous power, measured in watts, that an amplifier produces is called RMS power. The higher the RMS figure, the louder and cleaner your music sounds.

The RMS output figure is much more accurate than the peak rating when comparing products.

200 watts
Speaker Level Inputs
Speaker level inputs are commonly referred to as high-level inputs and vice versa. This input type allows you to get your audio signal directly from the speaker wire in your vehicle, instead of using RCA cables. The advantage of this is factory integration, as most stock radios do not have RCA outputs to run amplifiers.
Built-in Crossover

A crossover is a type of filtering system that permits only certain frequencies to play. A Low-Pass (LP) crossover allows only frequencies below its setting to get through which is good in the case of some subwoofers. A High-Pass(HP) filter allows frequencies above its setting to pass through, this is normally used on speakers.

When a crossover is set to FULL it means no filtering is added and the full frequency spectrum is allowed through the amplifier. Filtering is important because feeding a speaker frequencies it cannot reproduce effectively creates distortion.

Low-Pass (LP)
Low-Pass Crossover Frequency
The low-pass crossover frequency is typically used for subwoofers. It can be a fixed crossover point or a variable crossover range. A variable low-pass crossover allows you to select a specific crossover point which allows frequencies below the set crossover point to pass, while making frequencies above the set point gently or harshly roll-off, depending on the steepness of the slope.

The steepness of the roll-off slope is measured in dB/octave and refers to the rate of attenuation (lowering of volume) outside their pass bands.

60 - 250 Hz
Channel Separation
Also referred to as crosstalk. The amount of interference on one stereo channel caused by the leaking of the other stereo channel. The higher the rating in decibels (dB), the better the Channel Separation.
Bass/Gain Remote
If the amp comes with a bass/gain remote you will be able to control the level of your bass from your dashboard. Typically bass remotes also include a 16-20 ft. wire for installation.

Subwoofer Specifications

Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
200 watts
Total RMS Power Handling
This is the total RMS power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total RMS power handling for all of the subs combined.

The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend giving your subwoofer(s) 75% - 90% of the recommended RMS rating.
200 watts
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
250 watts
Total Peak Power Handling
This is the Total Peak Power handling of all the subwoofers included in the package or enclosure.

If the loaded enclosure or amplifier and subwoofer package includes more than a single subwoofer, then this is the total peak power handling for all of the subs combined.

Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements.
250 watts
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Treated Foam
Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Paper Cone with Polypropylene Dust Cap
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
102 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
30 - 250 Hz

Enclosure Specifications

Box Type
Represents the style of the enclosure. Be sure to purchase the appropriate enclosure type and internal volume that will be compatible with your subwoofer's recommendation.

Sealed - Sealed boxes are those that have no holes or vents in it. The only hole in a sealed box is where the subwoofer is installed. Smaller sealed boxes require more power than a larger sealed box. They provide a tight, accurate bass, while the larger sealed enclosures provide a "boomier" and louder bass.

Ported / Vented - Ported/Vented Enclosures provide an even boomier, louder bass, but less accurate then a small, sealed box. Ported enclosures typically require more airspace per sub and also less power output from an amplifier to perform correctly.

Bandpass - Bandpass enclosures make subwoofers perform efficiently, but loose. The bass is not as "boomy" as a ported enclosure nor as punchy as a sealed enclosure. Bandpass enclosures work well with lower to mid-level subwoofers.
Vented / Ported
Number of Subs/Speakers
This value represents the number of speakers or subwoofers that the enclosure accommodates.
Box Style/Shape
The box style or shape refers to the actual shape of the box. Square and rectangular boxes are straight-edged boxes on all sides, whereas hatchback and truck style enclosures feature an angled front or back design that allows for installation in places short on depth such as single cab pickup trucks. You can also use such enclosures in hatchback cars or other vehicles where space is a premium. Tube and cylinder shaped boxes were made popular by Bazooka and are a great option for those looking for a nice amount of bass without sacrificing lots of space. They may even fit in locations that slim truck boxes cannot fit in. If the enclosure is vehicle specific, we encourage you to read the product description to find out which vehicles the enclosure is made for.
The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating

Real Man

McComb, MS


June 4, 2013

This speaker has exceeded my expectations! The amp is super powerful. Sometimes it's hard to believe its only a 8 in! I highly recommend !

35 of 41 found this helpful

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Chandler, AZ

Good relatively small device with excellent frequency range

October 31, 2010


1. The only device that you can buy and install right away in almost any car. The amplifier is built-in and that's really good for cars with limited space like mine. I'm using it in Honda Odyssey EXL 2002, the sub is installed between driver seat and right front passenger seat. The space under table is more than enough to get it installed.
2. Excellent frequency range. I use it for classical, new age, country, rock and some other styles. Sounds very solid if you don't want it to sound extra loudly, which is not required.
3. Having a remote is a must since the frequency range values from album to album and, instead of changing the player settings or even worse, using the back screws on the sub, the remote gives a very simple and convenient way to change two most valuable parameters of the sub on the fly.

1. The installation in Honda Odyssey required a few pieces of velcro. I fixed the sub to the driver seat. The straps were worthless since there is no way to screw them down the floor or to attach to the seat.
2. The promised frequency range - 30+ Hz is probably incorrect. I suspect this device is able to reproduce much lower frequencies, and I personally don't like that. You can use the fingers to feel how it works with different frequences even if you don't hear the sound. I'd honestly prefer this sub has a low frequency filter to kill the very low frequences, dangerous for the health. The range of frequences to be filtered out should be 0-20 Hz and it should be permanent. Right now this device is more than enough to get a strong headache after a 15-20 minutes usage at medium volumes. I got a 100% correlation after couple weeks of listening, so there is no mistake, I'm positive. I'm happy that I didn't buy the dual device because I could not install it in my Honda and it would be even more dangerous for the health for sure.

I'm honestly not sure if it makes sense to buy this device since it has no low frequency filter. Maybe my sub is defective, but it's rather by design. So if you don't care of headache, maybe it's only my personal issue, then you're ok to go. My Kenwood HD545U has a very good frequency range and maybe I'm facing this problem having this combination of devices with almost unlimited range.

32 of 38 found this helpful

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Arlington, TX

Quality !!

September 4, 2010

its amazing how much bass comes from a small tube. when i have the volume up half way, my trunk rattles (99' Altima) so it gets the job done. But you cant take this to a bass competition, you will lose.

32 of 40 found this helpful

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Webb City, MO

Exactly what I was looking for!

March 23, 2010

I wasn't looking to impress the neighbors by rattling their windows. I was simply wanting something to fill in the low end that my stock speaker system lacked. It also needed to fit under the back seat of my GMC Sierra extended cab pickup. The Bazooka 8" tube was just the right size at the right price so I ordered the 100 watt version. However, after notifying me that they were back ordered, Sonic offered me a significant discount on this 200 watt version. I'm so glad I got the 200 watt tube! It has the perfect punch and a very defined bass response...not muddy at all. The controls are simple. I cross mine over as high as it will cross and turn the adjustable volume all the way up. Then I control the amount of bass with my aftermarket JVC receiver. Even the installation was easy. I would highly recommend the BTA8250D. Some of the best money I've ever spent!

28 of 34 found this helpful

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Los Lunas, NM

Bazooka Fan

May 19, 2013

Bought an 8" for my van - sounds great. This is my third one. Had a 6" and a 12" in different vehicles - all sounded great. Will always buy Bazooka.

24 of 29 found this helpful

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Still booming along...

March 18, 2013

I received the bazooka 8" 250w D amplified woofer tube in exchange for the infinity basslink that had failed.

Customer service at Sonic Electronix was very helpful with the return and was great with helping me choose a replacement product.

Very happy with the Bazooka tube, just as much bass as the 10" Infinity I replaced but seems more durable and seems to take less space. I had the bazooka in a small hatchback sports car and had to keep the level low. Now in the back of an crossover size SUV and at 3/4 volume but complements the factory setup perfectly.

I wired into the low output of the car so I have fade and bass control on the factory head unit. The vehicle has 8" woofers under the seats from the factory so there was some bass, but adding this bazooka with the built in crossover adds the extra low end I was lacking. Can also set the factory speakers with less bass so I can get more volume with full range sound.

Would absolutely recommend Sonic Electronix for their customer service and Bazooka for a quality product.

25 of 31 found this helpful

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El Paso, Texas

great price, great product

April 14, 2011

Simple design, easy to install

26 of 33 found this helpful

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White Plains, NY

Getting the job done!

October 17, 2011

For me, the Bazooka 8250 was the perfect choice. I drive a Subaru Outback, and as an entertainer, the back of my car is always loaded with equipment. So I needed something powerful but with a small footprint. The 8250 delivers in a big way!

Even with only an 8 inch speaker, it fills out the bottom of my music nicely. My teenage boys like to listen to a 'rap' station on the XM radio. And while I don't enjoy that type of music, it is cool to see my rear view mirror quiver about everytime the Bazooka hits the lows.

I am very pleased with my BTA8250D so far. Sonic Electronix had one of the best prices on the web and they delivered the product quickly. If you are an audiophile or drive around with tinted windows looking to rattle the rear view mirror in other people's cars, this may not be for you. But if you are a regular guy looking for a nice, deep, punchy sub at a reasonable price, this may definitely be what you're looking for.

24 of 30 found this helpful

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Dardanelle, AR

Bazooka Boom

July 18, 2016

After years of big amps and sealed enclosures taking up trunk space I have really come to appreciate Bazooka products and the BTA8250D is a great fit for my old Honda Accord. Provides a really good balance of low-end sound with the aftermarket speakers in factory locations being powered by a 50wX4ch amp. This is my fourth Bazooka product and all have been great.

0 of 0 found this helpful

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Accessory Tools and Products

Accessories added


Universal Remote Level Control for Car Amplifier/Amp Bass/Input

Your Price $7.99


Trunk Kit - 20 Square Feet of Sound Dampening Material (Five 18" x 32" Pieces)

Your Price $59.99

Items we think you might want
RBCM-250D main
Bazooka RBCM-250D

• Remote Bass Control Unit for use with BTA10250D, BTA10205D-DE, BTA6250D, BTA6250D-DE, BTA8250D, BTA8250D-DE, 250 Watt Class D Amplified Bazooka Bass Tubes subwoofers. Cord Length: 16.5ft/5M

Your Price $29.99

BTA6250D main
Bazooka BTA6250D

• Powered 6" Bass Tube
• Paper Cone with Polypropylene Dust Cap
• Treated Foam Surround
• 200 Watts RMS
• 250 Watts Peak
• 4 Ohm Impedance
• Preamp Inputs
• Speaker-Level Inputs
• Plastic Woofer Grille

Your Price $254.99

BTA10250D main
Bazooka BTA10250D

• Powered 10" Bass Tube
• Paper Cone with Polypropylene Dust Cap
• Treated Foam Surround
• 250 Watts RMS
• 300 Watts Peak
• 4 Ohm Impedance
• Preamp Inputs
• Speaker-Level Inputs
• Plastic Woofer Grille

Your Price $299.99

Browse 5 questions and 7 answers
Hide answersShow all answers | Sort by
Why did you choose this?
Sonic Electronix Store
High quality and fitment into smaller car
Don D on Apr 20, 2017
Replaced a 20 year old unit that I was very happy with. I hope this one is as good or better than that one!
Raymond S on Feb 16, 2015
I have a BTA100D and sounds good, This will hit harder...
Eddie G on Nov 8, 2016
is the installation just RCA cord and power or do all the wires get hooked up like high level inputs? or are they optional?
A shopper on Nov 6, 2014
Best Answer: Hello,

The BTS8250D will need a Power & Ground. To get an Audio Signal to it, it can be EITHER RCA OR the High Level ins.
Reply · Report · Customer SStaff on Nov 9, 2014
· Add Answer · I Have This Question Too (1)
installing a 2013 ford taurus?
michael c on Nov 30, 2015
Best Answer: how do i install the bta8250od bt series 8 inch speaker
Reply · Report · michael c on Nov 30, 2015
· Add Answer · I Have This Question Too (0)
Do all of the Bazooka powered tubes have the same wiring? I have one now and am thinking of upgrading to a more powerful one and was wondering if it is just a matter of unplugging and plugging in the new one. Thanks
A shopper on Jan 22, 2015
Best Answer: Hello,

For the most part, Yes. HOWEVER, Please plan accordingly and get with the manufacture's tech support if needed. This is because, although the harness for , example, the Bazooka BTA6250D & Bazooka BTA10250D are identical, they are completely unlike that of the Bazooka BTA850FH.

RE: 1-800-THE-TUBE (1-800-843-8823)
Reply · Report · Customer SStaff on Jan 24, 2015
· Add Answer · I Have This Question Too (0)
can I add a bazooka to my home stereo ?
Walter S on Jan 15, 2015
Best Answer: Hello Walter,

Although not its intended use, it can be integrated into a home stereo. However, it will be considered a 'custom install' and therefore we cannot offer assistance on such a project. What we can say, is that you will simply need to figure out a way to get Home Power to this '12v Power' product.
Reply · Report · Customer SStaff on Jan 17, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


Model Number




Internal SKU


Internal Product ID


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: Bazooka BTA8250D

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Bazooka BTA8250D

8" 250W BT Series Class D Amplified Subwoofer Bass Tube (BTA-8250D)


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