Specials Outlet
MTX Bass Package Road Thunder RT12X2D dual 12" enclosureThunder251D mono subwoofer amp

Package

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Please measure mounting area to confirm fit

This MTX package contains everything you need for great bass: two hard-hitting Road Thunder 12" subs already mounted in a sturdy enclosure, plus a classic Thunder amp to power your rig. And here's the best part — you'll still enjoy big savings!

The Road Thunder RT12X2D subwoofer features two Road Thunder 12" subwoofers housed in a sealed enclosure. Each sub sports a black polypropylene cone, a foam surround, a rugged stamped steel basket, 35-ounce magnet, and 1-1/2" voice coil. The sub has extra stitching around the cone, so the cone and surround won't split up when you turn up the juice. The enclosure is wired for 2-ohm total impedance, and handles up to 400 watts RMS.

The Thunder251D mono amplifier is designed for serious bass performance. Low frequencies require a lot of power, and this amp cranks out 250 watts to the Road Thunder enclosure! You'll harness all that power with the built-in low-pass filter (18 dB per octave at 85 Hz) and the low-frequency enhancement of ThunderEQ (a selectable 6 or 12 dB boost at 40 Hz).

Heavy-duty, nickel-plated terminal block connectors help transfer as much current as possible into the amp. Intelligent Surface Mount Technology ensures greater operating stability and low noise levels. The MOSFET-fueled Adaptive Class D design produces major power from a small chassis, with minimal heat buildup. You get more volume with less distortion for deep, pounding bass, no matter how loud you like it.

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Details:

  • T251D amplifier
  • 125 watts RMS x 1 at 4 ohms
  • 250 watts RMS x 1 at 2 ohms
  • low-pass crossovers (fixed at 18 dB/octave at 85 Hz )
  • ThunderEQ bass boost (6 or 12 dB at 40 Hz)
  • requires 10-gauge power and ground leads — wiring and hardware not included with amplifier
  • preamp outputs and inputs
  • speaker-level inputs with SmartEngage (turns the amp on when it detects signal from the receiver)
  • 8-1/16"W x 2-1/4"H x 9-13/16"D
  • warranty: 1 year
  • RT12X2D dual 12" enclosure
  • two 12" Road Thunder subs
  • hatchback-style sealed enclosure
  • frequency response 31-150 Hz
  • power handling 100-400 watts RMS
  • sensitivity 93.5 dB
  • 30-1/4"W x 14-1/4"H x 18-1/8"D1 x 8-1/4"D2
  • warranty: 1 year

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No Interest If Paid Within 6 Months*

* Valid on qualifying purchases made between 12/29/09 – 3/31/10 when you use your Sony Financial Services credit card account.
On promo purchase balance, monthly payments required, and no finance charges will be assessed if:
(1) promo purchase balance paid in full in 6 months.
(2) all minimum monthly payments on account paid when due, and
(3) account balance does not exceed credit limit.
Otherwise, promo may be terminated & finance charges assessed from purchase date.

On promotions requiring a minimum payment, payments over the minimum will usually be applied to those promo balances before non-promo and other balances. If you have a non-promo balance, this may reduce the benefit from the promo. If you want to change this payment allocation, please call Customer Service. Standard terms apply to non-promo purchases and optional charges. Promo purchases on existing accounts may not receive full benefit of promo terms, including reduced APR if applicable, if account is subject to delinquency pricing. As of 12/01/09 APR 23.99% and on all accounts in default 29.99%. Minimum Finance Charge $2.00. Subject to approval by GE Money Bank.

Offer subject to termination at any time without prior notice.

MTX Bass Package

Road Thunder RT12X2D dual 12" enclosure
Thunder251D mono subwoofer amp

Item #236TP12X2
DISCONTINUED

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What's in the box?

Download owner's manual

  • This package contains one amplifier box and the following items:
  • 1 Sealed hatchback-style enclosure loaded with two 12" Road Thunder subwoofers
  • Warranty card
  • "MTX Audio Motorsports" sticker
  • The amplifier box contains:
  • Mono amplifier with one 25A fuse inserted into the chassis
  • 8" Speaker-level input harness
  • Owner's Manual
  • Amplifier Output Connections/Amplifier Input Connections card
  • Amplifier Performance Certificate
  • "MTX Audio" sticker