This design came about simply because I had the opportunity to test and verify it while working on the 3 way tower. As a super cheap all purpose monitor it really holds its own. Only giving up bass depth and power handling to its larger brother. The box is a very simple and fairly compact sealed monitor with one quirk. The woofer is placed 1/2" in front of the tweeter which allowed me to easily use 2nd order slopes for the crossover. I simply ran the edge of the double baffle piece through my table saw with the blade cocked 45 degrees, and then glued it over the woofer cutout. All drivers are surface mounted, as their frames allow. The box is constructed out of 1/2" MDF, 13" H x 9" W x 8.5" D. The cabinet is separated internally half way between the woofer and tweeter. Each chamber is fully stuffed with polyfill.
This speaker features a 2nd order LR at 1000 hz crossover. Given the budget nature of the design I tried to keep the crossover as simple as possible. Even using all Dayton poly caps a pair of parts should only come out in the mid $30 range per speaker. Impedance makes for a very easy load, this is true 8 ohm design. Speaker sensitivity is low at 82 db, but given the capable woofer they can easily handle a 100 watt amp. The measurements shown are not a reflection of sensitivity. (This is the measured on axis response shown with the reverse null. Below 500hz should be ignored. This is not actual sensitivity)
Measurements 1/48 smoothing
A satisfying budget build. Very punchy bass and smooth mid range with surprising treble clarity. Bass extension is boundary dependent. Pulled out into the middle of a room you should expect 80hz, but placed near walls and you can easily get down into the 50hz range. Ideal for nearfield placement, small rooms, surrounds, and anywhere else you might be looking to add a cheap set of speakers.