The Otop Series are the easy to build high output models of Bill Fitzmaurice Designs
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The OT15 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.
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The OT15 may also be built with a twelve element cross-firing melded tweeter array,
giving high frequency dispersion that no commercial PA top can match.
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For the highest possible output at the longest throws, build yours with a premium compression driver on a line arrayable full cabinet height horn.
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Also available in a J array trapezoid cab. The same kits fit both tradtional and trapezoid
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One of our most popular kits
Complete details and plans are available from 
Specifications
Otop 15 Series PA Cabinet Kits
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Dispersion with Piezo melded arrays: 120 degrees
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Dispersion with Diffraction Comp Horn: 100 Degrees
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Power handling: Driver dependent. See options in drop down box for driver selection
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Response: 80-18k
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Dimensions: 22in x 22in x 18in
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Weight: Approx 45-50lbs, dependent on driver and hardware.
Kit Contents
Otop 15 Compression Horn Deluxe Kit Includes:
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Every nut, bolt, screw and washer to complete your cab. All hardware and screws are black
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Choose from 3 styles of Corners, Chevron, or 1824 Metal in black and chrome
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Gasket Tape
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1 tube PL Constuction Adhesive
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Dish with gasket, includes jacks with screws/bolts and wire connectors, choose your style
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Speaker of your choice from the selection box.
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Handles of your choice from the selection box.
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3 Different Tweeter choices
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All crossover parts to spec, parts or prebuilt by SpeakerHardware.
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All parts are tested and confirmed by the SpeakerHardware shop to fit a Otop 12.
Response Graph
Otop 15 3015 ASD 
