A poor man Feastrex !

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I was previously in error. I looked it up and the drivers
were made by Guide-Sound in Guang-Dong. The model
is UR330B8-11F. The magnet is quite real - the speaker
weighs just under 12 kilograms.

I got 10 of them last May - shows you how long it takes for
me to get around to my toys...

When I have a little more time I'll mount them back up.

😎
 
I was previously in error. I looked it up and the drivers
were made by Guide-Sound in Guang-Dong. The model
is UR330B8-11F. The magnet is quite real - the speaker
weighs just under 12 kilograms.

I got 10 of them last May - shows you how long it takes for
me to get around to my toys...

When I have a little more time I'll mount them back up.

😎

Here is the link for Gui-De Sound. Can't find UR330B8-11F though...

Jaz
 
Last edited:
Nelson,

Any update on these drivers?

Also, for all asking how to get those, quite simply:
- Go to China
- Enter a Bank of China branch and open an account
- Activate online shopping for your account
- Buy on Taobao (use Google Chrome, it automatically translate in English)
- Put the drivers in your carry on luggage
- Go back home

In the mean time, you may want to visit a bit. China is a great country, with lots to see 🙂

Alternatively, Singapore has a shop on Upper Cross street who sells those (a bit more expensive)

Serge
 
Mainly I'm looking for someone who has used this particular driver in a specific design, I suppose. I'm leaning towards an open-bottom cabinet, with a heavily damped/lined upper half. Probably 16x20x48~60 or similar, with driver centered around 36~39" from the floor.
 
OK, though FWIW, all [T/S] cab alignment math peters out at the driver's effective upper mass corner: Fhm = 2*Fs/Qts'

Qts' = Qts + any added series resistance [Rs]: mh-audio.nl - Home

In general then with the exception of compression horns, non optimal damping and the room's impact on it, the cab normally doesn't have any real influence over a driver's response other than to provide a 'fullness'/'bottom' to the signal and why I don't pay much attention to the alignment per se whether just a sim or actual build; instead judging strictly on its performance below the driver's [Fhm] as to whether it meets the needs of the app or not.

GM
 
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