[FullRangeMan]

Hi all,
Glad to inform just found this new exciting giant 21 inches OB woofer from Lii Audio $990/pair.
W-21 woofer
Basic parameters:
Frequency response range: 20-2800Hz
Power: 150-280 Watts
Impedance: 8 ohms
Sensitivity: 102dB
Outer diameter: 540mm
Hole diameter: 485mm
Material: loose pressure paper cone cloth edge, cast aluminum frame
Net weight: 15Kg/piece
Gross weight: 40Kg/pair packaging

Aditional TS pars:
Revc=6.600 Ohm
Fo=20.198 Hz
Sd=1.734K cm?
Md=180.000 g
BL=19.510 T
 Qms=3.176
 Qes=0.443
Qts=0.389
 No=11.627%
 SPLo=96dB
Vas=1.315k Ltr
Cms=308.082u MN
Krm=2.061u Ohm
 Erm=0.906
Mms=201.537g
Mmd=64.392m Kg
Kxm=51.693m H
Exm=0.614

[Woodsage]

There is no information on the Lii Audio website about this woofer at least that I could find.

However this verbiage is copied from the Lii Audio home page:
 
* We don’t sell or grant any reseller on Aliexpress *

[FullRangeMan]

There is no information on the Lii Audio website about this woofer at least that I could find.

However this verbiage is copied from the Lii Audio home page:
 
* We don’t sell or grant any reseller on Aliexpress *

Correct. I believe you are referring to the Lii Song website.
See the Description Tab in the woofer link above, I dont know who is right.

[Woodsage]

Got it, thanks for the clarification FullRangeMan.

I notice that the Lii Audio store on Alixpress has a much larger selection of drivers.

This 10” full range looks interesting and well suited for OB use.

https://m.aliexpress.us/item/3256803366778065.html?spm=a2g0n.store_m_home.slider_6001946750745.1&gatewayAdapt=gloPc2usaMsite4itemAdapt&_randl_shipto=US

[planet10]

With that Qts you will need EQ on an OB.

dave

[FullRangeMan]

I had noted this unsuited Qts to OB.
They are using a hard suspension.