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Bazooka MBTA8250D

Marine BT Series 8" Bass Tube with built-in 160-watt amplifier

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  • Bazooka MBTA8250D

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Our take on the Bazooka MBTA8250D

by Ken Nail
Bazooka

Want to make a big splash with your boat's sound system? Bazooka's marine-ready MBTA8250D 8" amplified Bass Tube puts out powerful bass that'll add low-end punch to your music out on the water. This space-saving sub offers an ideal solution if you don't want to make a lot of modifications to your vessel.

The Bass Tube features an 8" woofer and a built-in Class D 160-watt amp housed in a UV- and moisture-resistant enclosure, and it comes with an installation kit that includes a power/signal harness and mounting straps. Speaker- and preamp-level inputs ensure it can be connected to almost any radio.

An optional wired Remote Bass Control Module gives you independent cockpit volume control of the bass output.

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Highlights:

  • marine-ready 8" amplified Bass Tube
  • waterproof 8" woofer with foam surround
  • power output: 160 watts RMS (250 watts peak)
  • variable low-pass filter (60-250 Hz, 18 dB/octave)
  • subsonic filter (12 dB/octave at 35 Hz)
  • frequency response: 35-250 Hz
  • sensitivity: 102 dB
  • speaker- and preamp-level inputs
  • 8-9/16"W x 10-1/16"H x 18-3/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

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

Product Research
What's in the box?

Download owner's manual

  • One 8.0" amplified marine tube-style subwoofer with attached grille
  • 10" Signal wiring harness
  • Power wiring harness (has an 11" power lead and 23" ground lead)
  • 1 In-line fuse holder with a 20A fuse (has 4" leads on both sides)
  • 2 Yellow butt connectors
  • 1 Crimp-on ring
  • One 1/2" self-tapping screw
  • Two 3' mounting straps (each strap has an attached plastic mounting base)
  • Four 1" 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
Controls
Connections
Installation

Features

Marine Grade Construction: The MBTA8250D features an 8" waterproof poly woofer. The woofer is powered by a built-in 160-watt (250 watts peak) digital amplifier. The patented Bass Tube enclosure design eliminates bass standing waves for high accuracy, and superior efficiency. The enclosure is certified salt fog and UV resistant for 5 years and the included mounting hardware is stainless steel.

Low-pass Filter: The MBTA8250D has a low-pass filter that can be adjusted from 60 to 250 Hz.

2nd Woofer Output: The MBTA8250D has a high-level output for adding an optional MBT8014 (204MBT8014) passive bass tube to double the bass. The amplifier output increases to 275 watts (peak) when the 2nd woofer is connected.

Remote Level/Crossover Control: Using the optional RBCM-250D remote control (204RBCM250), you can control the bass output level and crossover frequency of the subwoofer from a remote location.

Controls

Level Control: There is a rotary control on the rear-panel that allows you to adjust the level of the subwoofer.

Crossover Control: The unit's rotary control is found on the rear-panel and allows you to adjust the low-pass filter from 60 to 250 Hz.

Power LED: If power, ground and remote are connected properly, the LED on back of the unit will illuminate in green.

Connections

Remote Control: Phone-type jack for use with an optional remote control; found on rear-panel

Power Harness: Two quick-slides for use with supplied power harness; found on rear-panel

Signal Harness: 14-pin Molex plug for use with supplied signal harness

Installation

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.

Required Accessories:

  • Power Wire: The 12-gauge power lead is only 11" long, so additional wire is required to extend it to the battery. Additional power wire must be crimped or soldered to the Bazooka's power lead.
  • Ground Wire: The 12-gauge ground lead is also only 23" long, and may need to be extended. Additional ground wire must be crimped or soldered to the Bazooka's ground lead.
  • Speaker Wire: required only when using the high-level inputs
  • RCA Patch Cord: required only when using the low-level inputs
  • Remote Turn-on Wire: required to connect the remote turn-on lead to the amplifier turn-on lead of your radio
 
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For a more in-depth review and enhanced detailed information on the Bazooka MBTA8250D, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_204MBTA825/Bazooka-MBTA8250D.html ).

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