Enclosed Subwoofers 101

An enclosed subwoofer is a box with a subwoofer already installed. The advantage to buying an enclosed sub is that the manufacturer made the sub, then designed and built the box as a perfect match, so you'll get the best possible performance. Every enclosed sub has a maximum RMS power handling rating, so pair it with an amp with a similar RMS power rating to get the best performance.

Our take on the Bazooka BT6018

by Dominic Devito

A bass cannon

Bass makes up about 30% of your music, and it gives music its power and impact. A good subwoofer can make an average car audio system sound good, and a good car audio system sound great. Good bass is all about moving air, and a cylindrical tube translates the motion of its woofer into maximum air pressure so you hear and feel more bass. Bazooka designed the Bass Tube to act like a bass cannon, firing low frequencies throughout your vehicle.

BT6018 6-1/2" Bass Tubes® enclosure

The BT6018 Bass Tubes enclosure features a 6-1/2" polypropylene woofer with a twin-layer compressed foam surround for smooth excursion. The 4-layer voice coil ensures reliable power handling for plenty of punch, and its 8-ohm impedance allows you to power multiple tubes with a single amp. The tube design eliminates standing bass waves for accurate response and high efficiency. Find a good spot for a Bazooka Bass Tube in your vehicle and you'll still enjoy plenty of cargo room.

Bass Tubes enclosures fit just about anywhere

A compact Bass Tubes enclosure will fit in almost any vehicle, and you can disconnect it in a snap if you need more cargo space. Since the tube's speaker and port are right next to each other, you can get amazing results by "corner loading" your tube — placing it in a corner of your trunk or cargo area so your vehicle's boundaries act as a natural amplifier, boosting bass production. Want to know more? Take Bazooka's Bass Tubes Tour.

From Bazooka: Bass Tube Technology

See more info on this item

Highlights:

ported cylindrical enclosure with 6-1/2" subwoofer
includes mounting straps and hardware
poly woofer with compressed foam surround
8-ohm impedance
5-way binding post wire terminals
power handling: 6-100 watts RMS
frequency response: 39-1,500 Hz
sensitivity: 100 dB
6-7/8"W x 8-1/4"H x 18-3/8"D
warranty: 1 year
Our 60-day money-back guarantee

Hands-on research from the Crutchfield Labs (what are the Labs?)

Features and specs chart | What’s in the box? | In-depth notes

Features and Specs

General
Woofer Size (inches) Loading...	6.5
Woofer Material Loading...	Poly
Enclosure Type Loading...	Ported
Color Loading...	Black
Pieces in System Loading...	1
Width (inches) Loading...	6-7/8
Height (inches) Loading...	8-1/4
Depth (inches) Loading...	18-3/8
Second Depth (inches) Loading...	N/A
Connector Type Loading...	5-way posts
Frequency Response Loading...	39-1500 Hz
Power Range (Watts RMS) Loading...	6-100
Maximum Wattage Loading...	---
Sensitivity Loading...	100 dB
Impedance Loading...	8 ohms
Parts Warranty Loading...	1 Year
Labor Warranty Loading...	1 Year

Product Research

What's in the box?

One 6.5" tube-style subwoofer with attached grille
Two 29" mounting straps (each strap has an attached plastic mounting base)
4 Self-tapping screws
Installation Manual

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team — they open the box, verify contents, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Features

Overview: The BT6018 features a water-resistant poly enclosure that houses a 6-1/2" poly woofer with a foam surround. The patented Bass Tube enclosure design eliminates bass standing waves for high accuracy, and superior efficiency.

5-Way Binding Posts: The 5-way binding posts will accept bare wire, pin connectors, spade lugs, banana plugs, and dual banana plugs.

Installation: Each mounting strap has an attached mounting base that can be secured to your vehicle using the supplied self-tapping screws. Once the mounting bases are installed, the tube is held in place by the mounting straps. For best results, the tube should be mounted facing into a corner, and there should be 2" to 4" between the woofer and the corner into which the woofer is pointing.