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Otop 12 Comp Horn Driver Kit

Comp Driver 1x
1 ASD 1001
FM 151-8 (+ USD $40.00)
Price: USD $179.99
  • Description
  • Related Items

The Otop DIY Speakers are the easy to build high output models of Bill Fitzmaurice Designs

  • The OT12 may be built with a single compression driver on a CD horn,
    or it may be built with a six element vertical tweeter array for
    line-array stacking of multiple cabs.
  • The OT12 may also be built with a twelve element cross-firing melded tweeter array,
    giving high frequency dispersion that no commercial PA top can match.
  • For the highest possible output at the longest throws, build yours with a premium compression driver on a line arrayable full cabinet height horn.
  • Also available in a J array trapezoid cab. The same kits fit both tradtional and trapezoid
  • One of our most popular kits

Complete details and plans are available from


Otop 12 Series PA Cabinet Kits

  • Dispersion with Piezo melded arrays:        120 degrees
  • Dispersion with  Diffraction Comp Horn: 100 Degrees
  • Power handling: Driver dependent. See options in drop down box for driver selection
  • Response:  80-18k
  • Dimensions: 15in x 22in x 18in
  • Weight: Approx 35-40lbs, dependent on driver and hardware.

Kit Contents

Otop 12 Compression Horn Deluxe Kit Includes:

  • Speaker of your choice from the selection box.
  • 3 Different Tweeter choices
  • All crossover parts to spec, parts or prebuilt by SpeakerHardware.
  • All parts are tested and confirmed by the SpeakerHardware shop to fit a Otop 12.

Response Graph

Otop 12 3012h0 NSD2005


1 1/2 Acoustic Eggcrate Foam
Duratex Roller Grade Gal Black
Hat 1 3/8 Cast
Hat 1 3/8 Cast
Price: USD $11.49
Flat Grille Otop 12
Flat Grille Otop 12
Price: USD $44.95
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Shipping & Inventory Update

Shipping will be closed from Dec 22 through Jan 8th.  Happy Holidays!

Please email about any order that includes drivers for availability. 

 Business is booming, and flat pack and shop built orders are once again stretching lead times. Plywood availability is becoming an issue.

Expect at a minimum of 4 weeks for any shop built order.  6-8 weeks for custom flatpacks.  We are not accepting custom built cabs at this time, only flatpacks and fEARful/ Fearless bass cabs.