Final 0.4 MkIII Electrostatics

Hi to all.
I recently purchased a pair of these speakers. With the speakers came two different 12v adapters. One was a 0.5va and one was a 1.54va.
Upon listening i found that the 0.5 was not powering the panel ( I did alternate supply to each speaker to confirm it was supply problem and not speaker)
My first port of call was to contact Final where i was informed the 0.5va - 6watts according to Mr Ohms - is enough to power the speakers and that as it wasn't, the problem must be the internal transformer. Now... as the 1.54va seemed to power the panel I thought until I get time to get the speakers looked at and the internal boards tested I would buy another 1.54va supply just so as i could get a good idea of what the speakers sound like. Not able to find a 1.54va I settled for two 2va adapters so at least the supply was matched.
This itself presented another problem as for some reason I cannot seem to hear either panel now!! When i sit back and play some tunes that I'm familiar with everything sounds as it should. The soundstage is huge, the trebles are there and it does sound very good but upon standing in front of the panel I'm not hearing anything!! Am I missing something?
Note: I am using a modded Cyrus 2 + PSX