Full report attached via PDF.
Driver:
Tang Band W6-1721
Tang Band W6-1721 6-1/2" Underhung Midbass Driver 264-874
Photo:
(stock)
Impedance and T/S Parameters:
Klippel 10% Distortion based Xmax:
* I pounded on this speaker (took the protection parameter on Cmin as low as I could @ 20%) and could not get Bl to resolve at all. Regardless, you're suspension limited but I still like to resolve all the parameters I can when possible.
Sample Klippel Data:
Driver:
Tang Band W6-1721
Tang Band W6-1721 6-1/2" Underhung Midbass Driver 264-874
Photo:
(stock)

Impedance and T/S Parameters:

- Re = 3.5805 ohms
- Fs = 45.2438 Hz
- Zmax = 25.9420 ohms
- Qes = 0.5976
- Qms = 3.7321
- Qts = 0.5151
- Le = 0.2889 mH (at 1 kHz)
- Diam = 127.7620 mm ( 5.0300 in )
- Sd =12820.1563 mm^2( 19.8713 in^2)
- Vas = 13.8331 L ( 0.4885 ft^3)
- BL = 5.9644 N/A
- Mms = 20.8859 g
- Cms = 592.4734 uM/N
- Kms = 1687.8396 N/M
- Rms = 1.5909 R mechanical
- Efficiency = 0.2014 %
- Sensitivity= 85.0595 dB @1W/1m
- Sensitivity= 88.5510 dB @2.83Vrms/1m
Klippel 10% Distortion based Xmax:
- X Bl @ Bl min=82% >7.7 mm *
- X C @ C min=75% 4.0 mm
* I pounded on this speaker (took the protection parameter on Cmin as low as I could @ 20%) and could not get Bl to resolve at all. Regardless, you're suspension limited but I still like to resolve all the parameters I can when possible.
Sample Klippel Data:






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