Ya know, it's a bit funny but, the folks on the Martin Logan forum swear that tubes driving the panels are just 'tit's', I dunno though! The Summits are hungry and have no problem sucking...what...a kilowatt of power @4oms, God knows what at 1.5ohms?? The big SAE crys foul when cranked hard with mutiple fans going and 46 output transistors !!
Yes, still having shut down issues when playing hard...very hard, like just lighting up the 500w light...(not sure what that means with the 'Logans load).
Having mucho fun though!!