Vienna Acoustic Bach Grand Ohms question


I just purchased a pair of VA Bach Grands...as is.
One mid base 4 OHM woofer needs to be replaced...unrepairable.
I am having difficulty in locating a replacement.
I contacted PARTS EXPRESS, and they offered me a replacement mid base woofer called
WAVLOR...made in China. Is this okay to use ?
Another option I am thinking of would be :
I have a Vienna Acoustic Center Channel..."THEATRO" with two 6 OHM mid base drivers.
I tried 1 of these 6 OHM s and it sounded okay.
My question is :
Would it be alright  to use this 6 OHM mid base in my VA Bach Grand which is 4 OHM ?
Would it create any problems to crossovers or ?
It does sound good when I tested it.
Opinions please.
Thank you


rocky1313
I am a fan of VA speakers and I would say, do not use "any old" midwoofer to fix your problem.   I have seen the Bach Grand woofer for sale on Ebay many times.  It's not there now -- but I would keep checking. 

If you don't have any luck, you can also email Vienna Acoustics directly, in Vienna.  I've done that many times and bought replacement woofers. I bet they still have the one you need.

-hukk
Us distribution for va sucks. Buy a cheap ohm meter and check the resistance of the drivers disconnected to confirm they’re within a  tenth or two and if they fit you’ll be fine 
Why don't you contact the USA distributor? 
www.bluebirdmusic.com

Maybe you can order the woofer from them. I would use the same 4 ohm one. Otherwise one channel may end up sounding louder than the other channel at any given volume level of the 6 ohm one is used.