Tang Band W6-1721 Klippel Test Results

[ErinH]

Full report here:

http://www.diymobileaudio.com/forum/klippel-reviews-driver-specs/115969-tanb-band-w6-1721-underhung-woofer-klippel-results.html

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:

• 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:

[kmibb]

Re: Tang Band W6-1721 Klippel Test Results

Someone tell me what this means. As in, good or bad.

[dantheman]

Re: Tang Band W6-1721 Klippel Test Results

How about "there's room for improvement."

Dan

[kmibb]

Re: Tang Band W6-1721 Klippel Test Results

Are the Bl and Kms graphs supposed to be on the 0 axis? Because they aren't. Also the better ScanSpeaks and other drivers that people seem to praise all seem to be closer to the 0 axis.

[454Casull]

Re: Tang Band W6-1721 Klippel Test Results

Why is Db so insanely low compared to Dc?

[dantheman]

Re: Tang Band W6-1721 Klippel Test Results

The suspension is not as good.

Dan

[ErinH]

Re: Tang Band W6-1721 Klippel Test Results

Why is Db so insanely low compared to Dc?

look at the xmax figures. cmin is pretty low compared to Bl (which didn't even resolve fully).