MCM Electronics

6.5'' Two-Way 70v/8ohm Ceiling Speaker with BackboxMCM Part #: 555-9100  |  MCM Custom Audio Part #: 555-9100

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Enclosed 6½" Two–Way Ceiling Speaker
Versatile ceiling speaker is uniquely compatible in high fidelity and commercial sound applications. Two–way coaxial design provides wide frequency response, and a multi–tap transformer allows compatibility with both 8ohm and 70V commercial systems.

Note: Speaker sold individually.

Product Description

Fully enclosed, attached metal back–box ensures uniform sound quality, regardless of mounting location, while protecting the speaker from insulation debris and temperature extremes. Rotating mounting clips allow fast installation in to ceiling tile and drywall with no additional hardware.

  • Moisture resistant polypropylene cone
  • Treated foam woofer surround
  • ¾" mylar dome tweeter
  • Recessed push terminal speaker connections accept up to 16AWG speaker wire
  • Recessed rotary transformer tap selector
  • 8ohm bypass mode for conventional high fidelity applications

    Optional Accessories:

  • Pre–construction brackets
  • T-bar supports


  • Woofer: 6 1/2" poly cone with foam surround
  • Tweeter: ¾" mylar dome
  • Power capacity: 50W/100W RMS/peak
  • Frequency response: 50Hz ~ 20KHz
  • SPL: 90dB (W/M)
  • Transformer taps: 8Ω, 1W, 2W, 4W, 7.5W, 15W


  • Overall frame diameter: 8"
  • Required cutout: 7"
  • Mounting depth: 5½"

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    Package Specifications & Dimensions
    Weight:4.96 lbs.
    Warranty:365 days
    Need to Return?
    Length:9 in.
    Width:9 in.
    Height:6.75 in.
    Shipping Information
    Extra Shipping Charge:No
    Drop Ship:No
    Catalog Pages

    MCM Cat 57, Page 136

    MCM Cat 56, Page 149

    PDF Reference

    Requires Adobe Acrobat Reader.

    Mfr. Info

    MCM Custom Audio Logo
    Mfr. Name:MCM Custom Audio
    Mfr. Part Number:555-9100