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|23rd February 2006, 09:24 PM||#1|
Ravemaster BSW 154-II
I would like to build a subwoofer (to support my coming column speakers) that dan reproduce the freq. band between 30 - 100 Hz with about 105 dB Max. I thought about the Ravemaster BSW 154-II, it is for sale for € 60,- at www.boxen-baustelle.de With electronic correction, it simulates very well in WinISD
Nom. Impedanz 4
Re (Ohm) 3,3
Fs (Hz) 20
VAS (l) 394,1
SD (qcm) 855
Mms (g) 160
BxL (Tm) 18,4
SPL (dB) 1W/1M 97
Frequenzbereich (Hz) -
linearer Xmax (mm) +/- 5,0
Induktion Le (mH) 1,85
Belastbarkeit (Watt R.M.S.) 250
Belastbarkeit (Watt max.) 650
Durchmesser (mm) 63
Höhe (mm) 20
Aussendurchmesser (mm) 390
Einbaudurchmesser (mm) 358
Einbauhöhe (mm) 155
Gewicht (kg) 8,5
|23rd February 2006, 10:43 PM||#2|
Join Date: Nov 2004
Location: Québec, Québec
Low Fs, low Qts, very high efficiency...
If the parameters are right, this is a nice buy for sure.
I just checked in WinISD, efficiency is 94 dB/W/m, or 97 dB/2.83V/m.
I'd build a ported box, 125 liters, tuned to 25 Hz, with a 24 cm long 10 cm diameter pipe.
You could even lower the vent velocity with multiple longer pipes if box size permits it.
DIYaudio for President !
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