Hi, I have just repaired the cone of a woofer from a genelec 1037c speaker with pva glue. It's not needed for that application anymore as we purchased a replacement. I was wondering if it might work as a sealed sub? I measured the Thiele Small parameters using REW and include them below. It has a very low Qts and quite a high Fs. Would this work in a small sealed sub? Or has anyone any other recommended applications? I dont want to spend much on this project but my home system could do with a bit more low end so a small sub would be a useful project. This is a very heavy sturdy speaker. It has a pleated tacky fabric surround.
Look forward to hearing your ideas.
Nick
Voice coil DC 2.77ohm
effective area 452cm^2 (12inch speaker but effective cone diameter is 24cm)
TS parameters for measurement: without mass
RE 2.77 ohm
fS 51.7 Hz
MMS 76.85 g
Zmin 3.61 ohm
QMS 3.864
QES 0.254
QTS 0.238
CMS 0.123 mm/N
fmin 268 Hz
RMS 6.464 kg/s
f3 807 Hz
VAS 35.71 litres
LE (f3) 0.454 mH
FTS 217.3 Hz
Bl 16.524 Tm
Dd 23.99 cm
LP 94.95dB (1W/1m)
Eta 1.90 %
Sd 452.0 cm2
Added mass 29.40 g
Secondary measurement: withBigMass Air temperature 20.0 C, pressure 1,013.25 mB giving density 1.2041 kg/m3, c 343.2 m/s
Look forward to hearing your ideas.
Nick
Voice coil DC 2.77ohm
effective area 452cm^2 (12inch speaker but effective cone diameter is 24cm)
TS parameters for measurement: without mass
RE 2.77 ohm
fS 51.7 Hz
MMS 76.85 g
Zmin 3.61 ohm
QMS 3.864
QES 0.254
QTS 0.238
CMS 0.123 mm/N
fmin 268 Hz
RMS 6.464 kg/s
f3 807 Hz
VAS 35.71 litres
LE (f3) 0.454 mH
FTS 217.3 Hz
Bl 16.524 Tm
Dd 23.99 cm
LP 94.95dB (1W/1m)
Eta 1.90 %
Sd 452.0 cm2
Added mass 29.40 g
Secondary measurement: withBigMass Air temperature 20.0 C, pressure 1,013.25 mB giving density 1.2041 kg/m3, c 343.2 m/s
Qts is way too low for sealed box use and Fs is too high for it to be a sub. It could be a ported bass speaker, but it's not going to go very deep.
right. thanks for that. I'll go and have a look at a tapped horn. The driver seems similar to the b&C 10wn64 used in the tham10 so perhaps thats an idea.
I remeasured the TS parameters as I had to repair a small tear in the surround. Doesnt seem to be a big change.
TS parameters for measurement: withoutMAssFix2
RE 4.39 ohm
fS 54.7Hz
MMS 85.39g
Zmin 5.91ohm
CMS 0.099mm/N
fmin 241Hz
QMS 3.402
QES 0.415
QTS 0.370
RMS 8.619kg/s
f3 1,533 Hz
VAS 28.83 litres
LE (f3) 0.409 mH
FTS 147.7 Hz
Bl 17.603 Tm
Dd 24.00cm
LP 92.60 dB (1W/1m)
Eta 1.11 %
Sd 452.4 cm2
Added mass
29.4g
Secondary measurement: withMassSFix2 Air temperature 20.0 C, pressure 1,013.25 mB giving density 1.2041 kg/m3, c 343.2 m/s
TS parameters for measurement: withoutMAssFix2
RE 4.39 ohm
fS 54.7Hz
MMS 85.39g
Zmin 5.91ohm
CMS 0.099mm/N
fmin 241Hz
QMS 3.402
QES 0.415
QTS 0.370
RMS 8.619kg/s
f3 1,533 Hz
VAS 28.83 litres
LE (f3) 0.409 mH
FTS 147.7 Hz
Bl 17.603 Tm
Dd 24.00cm
LP 92.60 dB (1W/1m)
Eta 1.11 %
Sd 452.4 cm2
Added mass
29.4g
Secondary measurement: withMassSFix2 Air temperature 20.0 C, pressure 1,013.25 mB giving density 1.2041 kg/m3, c 343.2 m/s
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