MCM Electronics

50W RMS 4 Ohm Rubber Surround Woofer Poly Cone 6.5 Inch McmMCM Part #: 55-3230  |  MCM Audio Select Part #: 55-3230

50W RMS 4 Ohm Rubber Surround Woofer Poly Cone 6.5 Inch Mcm 3.7 stars from 3 reviews.
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6.5" Polypropelyne Cone Woofer
Low cost general replacement woofer is ideal in a two way cabinets or as a compact subwoofer. It is perfect for a wide variety of home or autosound applications and is ideal for either ported or sealed enclosures.

Also available in 8ohm Version

Product Description

    General Specifications:
    • Nominal Diameter: 6.5 inch
    • Rated Lmpedance: 4Ohm
    • Operating Bandwidth: 60 ~ 8KHz (-3dB)
    • Power Handling Capacity: 50W RMS
    • Sensitivity (1W/M): 88dB (±3dB)
    • Voice Coil Diameter: 1 inch

    Thiele-Small Parameters:
    • Resonance Frequency Fs: 40.0Hz
    • DC Resistance Re: 3.4Ohm
    • Mechanical Q Factor Qms: 3.66
    • Electrical Q Factor Qes: 0.4796
    • Total Q Factor Qts: 0.424
    • Equivalent Cas air load Vas: 26.93 L
    • Surface Area of Cone Sd: 0.0139 m2
    • Efficiency Bandwidth Product EBP 83.4
    • Voice Coil Over Hang X-max 3.5 mm

    Physical Information:
    • Cutout: 5.60"
    • Mounting Depth: 2.99"
    • Basket: Pressed steel chassis
    • Magnet Type: 16.6 oz.
    • Cone Material: Polypropelyne
    • Surround: Rubber
    • Dust Cap: Polypropelyne
    • Damper: Cloth

Product Reviews

  • "Amazing." by ryanadams00 on 3/13/2015
    Overall: 5 out of 5

    I'm not sure what these other reviewer scientists are talkin about or what all those dang numbers mean. By golly I just got me a pair of replacement speakers for my truck for about the same price as a pack of Budweiser. And DANG they sound good!

  • "Glad I tried it, but..." by on 7/18/2014
    Overall: 3 out of 5

    OK for the money, but not enough for good audio. Had to stretch spider to lower resonance to rated 40Hz. Distortion from limited linear excursion noticeable on loud deep bass. Seems to have more upper bass (what you might expect from this size) and not as smooth or deep as (but slightly louder than) the 98 Lincoln OEM sub it was to replace. 2 ohm DC resistance.

  • "Data sheet has been wrong for over a year" by litekeys on 10/25/2013
    Overall: 3 out of 5

    Be advised: the specs on the selling page may or may not be correct, but the data sheet is way off. And MCM knows this. Look at the impedance plot--to wit: no 4 ohm woofer ever has a lowest dynamic impedance of 8 Ohms.

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Package Specifications & Dimensions
Weight:2.51 lbs.
RoHS Comp:Yes
Warranty:365 days
Need to Return?
Length:7 in.
Width:7 in.
Height:4 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No
Catalog Pages

MCM Cat 57, Page 165

PDF Reference

Requires Adobe Acrobat Reader.

Mfr. Info

MCM Audio Select Logo
Mfr. Name:MCM Audio Select
Mfr. Part Number:55-3230