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MTX RTX128

12" midbass speaker with 8-ohm voice coil

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Item# 236RTX128 offer details

 
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MTX

Our take on the MTX RTX128

by John Pollard

They'll hear you coming
Are you looking to play your music loud? If so, you'll want to check out MTX's Road Thunder Extreme speakers, which use PA system technology to bring concert sound levels to your car. MTX built the RTX128 12" midbass speaker to fill in the frequencies in between where your tweeters and subwoofers play. And, believe us — this incredibly efficient speaker will give you plenty of volume when you feed it some serious power.

RTX128 12

Built for high power
The RTX128 handles up to 300 watts RMS thanks to its hefty magnet, treated paper cone, and cloth surround. You can also easily run two of these 8-ohm speakers with a single amplifier channel, great news if you're installing two in each door. You can install this speaker in an enclosure if you want, but it works great in a free-air applications.

Note: This package contains one speaker. You'll need an external amplifier to drive this speaker properly — an in-dash stereo won't have enough power.

Highlights:

  • 12" midbass speaker with 8-ohm voice coil
  • treated paper cone
  • treated cloth surround
  • power range: 50-300 watts RMS (900 watts peak power)
  • frequency response: 66-5200 Hz
  • sensitivity: 96 dB
  • mounting depth: 4-15/16"
  • warranty: 1 year
  • Our 60-day money-back guarantee
Shop all MTX Extreme Performance Speakers
     

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    What's in the box?

    Download owner's manual

    • One 12" Midbass driver
    • Specification sheet

    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.

    Specifications
    Warranty

    Specifications

    • Fs (resonant frequency): 60.9 Hz
    • Qms (mechanical Q at Fs): 10.375
    • Cms (suspension compliance): 0.133 mm/N
    • Mms (diaphragm/coil mass, including acoustic load): 51.434 g
    • Rms (suspension's mechanical resistance): 1.898 kg/s
    • Vas (equivalent compliance volume): 52.90 liters
    • Xmax (maximum linear peak): 0.8 mm
    • D (cone diameter): 10.24"
    • Sd (cone area): 520.93 cm² (0.052093 m²)
    • Vd (peak displacement volume): 0.042 liters
    • Qes (Electrical Q at Fs): 0.771
    • Re (voice coil DC resistance): 5.50 Ω
    • Le (Voice coil inductance): 0.642 mH
    • Bl (force factor): 11.86 Tm
    • Qts (total Q at Fs): 0.718
    • η0 (reference efficiency): 1.492%
    • Peak Power: 900 watts
    • SPL: 96.0 dB
    • Frequency Response: 66 Hz to 5.2 kHz
    • Recommended Crossover: 70 Hz high pass

    Warranty

    5 Year Warranty Terms: This product carries a 5-Year Prorated Warranty with the following terms:

    • Years 1-2: Products found to be defective in materials or workmanship during the first two years will be, at Mitek's option, repaired or replaced by Mitek at no charge. The warranty period does not renew, but continues on from the original date of purchase.
    • Years 3-5: The purchase price of an item which becomes defective after the first two years and prior to the end of the warranty period will be prorated and credited toward the purchase of a new MTX product. The amount of proration is determined by dividing the original purchase price by the number of months in the warranty period (60), then multiplying the result by the number of months remaining in the warranty period.
     

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    Accessories

    Add accessories for the MTX RTX128

    Reduce ambient road noise and your vehicle's "rattles," for better sound inside your car. See all categories & accessories

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    Skewdriver Pro SPK4042 Ratcheting straight and offset screwdriver set with 40 bits (Skewdriver Pro with ratchet handle, pictured)
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    Smart people protect with SquareTrade- The best warranty at the best price

    SquareTrade Warranty
    SquareTrade Warranty 3 Year Warranty
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    In business since 1999, SquareTrade is the largest independent warranty provider in the U.S.

    100% parts and labor - no deductibles

    All mechanical and electrical failures covered, includes normal wear and tear.

    Your item's repaired or the full item price returned withing 5 days

    Runs concurrent with manufacturer's warranty

    Rated 5-stars by consumers

    For a more in-depth review and enhanced detailed information on the MTX RTX128, please visit the Crutchfield website product page (/S-VEhtRnHlORc/p_236RTX128/MTX-RTX128.html ).

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      MTX RTX128
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      MTX RTX128
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      MTX RTX128