The Simplexx 15 DIY Bass/Keys Kit by Bill Fitzmaurice
is the perfect combination of performance and ease of construction

These cabinets can be built by anyone, minimal tools required

SpeakerHardware kits make them a painless start for the beginning builder, or the experienced one who needs simple high performing speakers.

Simplexx cabs feature braced half-inch plywood construction, for better performance with lighter weight than commercial cabs.
All feature corner located ports, for stronger construction with less weight than round or slot ports
Corner ports also sound better than round or slot ports, as their placement equalizes air pressure inside the cabinet, preventing cone rock at high levels.
These cabs aren’t difficult to build, but they still feature engineering that even ‘boutique’ cabs can’t lay claim to.

Power handling: Driver dependent. See options in drop down box for driver selection
Response: 40-18k
Dimensions: 20inw x 24.5inh x 20ind Single Driver
30w x 33h x 15ind Dual Driver
Weight: Approx 60-65lbs
dependent on driver and hardware.

Complete details and plans are available from

Every nut, bolt, screw and washer to complete your cab. All hardware and screws are black
Choose from 4 styles of Corners, Chevron, or 1824 Metal in black and chrome
Gasket Tape
1 tube PL Constuction Adhesive
Dish with gasket, includes jacks with screws/bolts and wire connectors, choose your style
6 drivers to choose from.
Eminence ASD1001 Tweeter, EM150s Horn with or without lpad
Handles of your choice from the selection box.
All crossover parts to spec, parts or prebuilt by SpeakerHardware.
All parts are tested and confirmed by the SpeakerHardware shop to fit a Simplexx.