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In Reply to: RE: Electro-Voice 12TRXB triaxial speaker in cabinet posted by GM on March 14, 2016 at 12:41:22
Based on the theil small parameters you gave me and this enclosed link for a 1/4 wave flared vent cabinet...http://dbdynamixaudio.com/quarter-wave-flared-vent-t-line-horn-bass-reflex-enclosure-calculator/
...I was able to calculate a 36"h x 14"w x 16.5"d folded horn cabinet with 34hz tuning point. The port is on the bottom and driver on the top. (Their drawing shows it laying on it's side.)
What do you think?
I do have one question, which theil small paramater is the driver displacement? I plugged in Qes in their calculator.
Edits: 03/20/16 03/20/16Follow Ups:
Dunno, post the worksheet results if it doesn't closely match what I simmed in Hornresp.
Historically, driver displacement [Vd] = Sd*Xmax = 535 cm^2*0.33 cm = 176.55 cm^3, but it appears he means driver volume displacement [Vid], so best guess is same period 12" Altec's ~0.15 ft^3/4.25 L.
Qes is the motor's effective motor strength: http://www.eminence.com/support/understanding-loudspeaker-data/
GM
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
thanks for the dictionary
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