I have ask many times to the haed quarters about the standard speakers mounted in a new 300 td model 210 and nobody can give me a correct ansher what is build in specs and a warning to use 1 ohm After many suerching and asking a reseller give me the hint to look to the becker prospect I read there that the hole system work with one ohm.While all other audio manufaters use 4 ohm and that this make all the audio damages even on the bigshows nobody give or can give me the right ansher about this problem When my tuner damages for garanty to use the 1 ohm system