Take a look at the Tang Band 5" W5-2143
-90db sensitivity.
-Mms = 6g,
-underhung motor,
-sim with 3kHz BW3 / BW3 crossover circuits
-Aluminum phase plug smooths sound above crossover
-Virgin white cone + Al phase plug blend with Al ribbon
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The Scanspeak 18W/8434G00 has Resonance frequency [fs] 50 Hz, so putting two in a 2.5 cuft volume with a port tuned to 40Hz looks good for a modest 1.5db bass shelf with -F3=38Hz PORT = 4" inside diameter, 5.6" long simple pipe (no round overs). Tweeter height ~39" is desirable. Width and depth should not be the same.
You can reduce cabinet edge diffraction distortion with simple edge bevels, or if you have a router with a 0.5" chuck you can purchase up to 1.5" radius quarter round cutters.
-90db sensitivity.
-Mms = 6g,
-underhung motor,
-sim with 3kHz BW3 / BW3 crossover circuits
-Aluminum phase plug smooths sound above crossover
-Virgin white cone + Al phase plug blend with Al ribbon
====
The Scanspeak 18W/8434G00 has Resonance frequency [fs] 50 Hz, so putting two in a 2.5 cuft volume with a port tuned to 40Hz looks good for a modest 1.5db bass shelf with -F3=38Hz PORT = 4" inside diameter, 5.6" long simple pipe (no round overs). Tweeter height ~39" is desirable. Width and depth should not be the same.
You can reduce cabinet edge diffraction distortion with simple edge bevels, or if you have a router with a 0.5" chuck you can purchase up to 1.5" radius quarter round cutters.
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Thanks, something I should also look into and I will.
Edit: I will look at this right now...
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I've designed few MTMs with NeoCd3 and 5.25" Seas paper cones. Xo was close to acoustical LR4 at 4kHz. Overall compromise around xo; balance, flexibility and spl capacity is better than textbook bw3+bw3 quite often recommended here. It's good to be aware of textbook designs but better applications irl are possible.
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