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Old 09-11-2012, 10:23 AM
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Default Tuning Parameters for the 12" enclosure

I have the recently purchased the passive 12" tube. I kind of need to know the port length and diameter and volume for T/S parameters.
I am replacing the driver and adapting the enclosure for use as highly portable and efficient bass guitar cab. I love this driver and this obviously is not what the enclosure is designed for.
But any help would be appreciated. Hopefully, SAS will expand into pro sound with a line of portable speakers.
I am wondering if the port length needs to be trimmed to bring up the tuning frequency to 48hz.

The T/S paramaters are
Resonant Frequency (fs)
48Hz
DC Resistance (Re)
5.1
Coil Inductance (Le)
0.43mH
Mechanical Q (Qms)
5.5
Electromagnetic Q (Qes)
0.53
Total Q (Qts)
0.48
Compliance Equivalent Volume (Vas)
91 liters / 3.2 cu. ft.
Peak Diaphragm Displacement Volume (Vd)
270cc
Mechanical Compliance of Suspension (Cms)
0.24mm/N
BL Product (BL)
11.7 T-M
Diaphragm Mass inc. Airload (Mms)
46 grams
Efficiency Bandwidth Product (EBP)
91
Maximum Linear Excursion (Xmax)
5.2mm
Surface Area of Cone (Sd)
519.5 cm2
Maximum Mechanical Limit (Xlim)
9.8mm
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