I have driven my Magnepan 3.6's (which have a vertical ribbon driver) from the Atmasphere MA-1's and the MA-2's, both with and without the auto-transformer. To make a long story short, the sound is spectacular with the auto-transformer. It is detailed, liquid and without any grain or harshness. It is a superb match and without introducing any anomalities. Without the auto-transformer the sound is still excellent but, the response is a bit uneven. There is a little bloat in the midrange and, perhaps a slight downshift in the extreme treble. This is more true with the MA-1 than MA-2. No doubt this is due to the rather significant internal impedance of the amplifier starting to affect the overall speaker crossover impedance.
Can OTL's drive ribbons well?
Seeking comment on ability of OTL's to drive mids/highs ribbons, specifically on Genesis II.5/300/350.Prefer to consider without zero autoformers as they have a reputation of bleaching sound(?).Can they do it without losing their special sonic ability of speed and organic liquidity? I guess I am really asking this question of the more affordable OTL's, ie.Transcendant, Atmasphere MA1 etc. If OTL's cant do it, which tubes can provide fast organic liquidity with dynamics at around $4000 and hopefully much less(new or used)-- again specifically driving ribbon mids and highs?
Finally does anyone use Cello duet 350 to drive ribbons?If so how do vocals sound?
Thanks and appreciate your comments
Finally does anyone use Cello duet 350 to drive ribbons?If so how do vocals sound?
Thanks and appreciate your comments