Planar Speaker Asylum

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RE: Amps for esl63

Posted by cawson@onetel.com on March 7, 2017 at 03:35:24:
I've just bought a pair of Quad 2905 speakers and are amazed a how much power they need to reach robust volume levels. Granted I'm used to horns but I've never before had speakers that are so greedy!
I have these amps:
845 based SET monos - 28 watts
Accuphase A-36 Class A - 30 watt
GamuT D200 mosfet - 200 watt
Only the GamuT is suitable for the Quads and even that needs to operate at its full gain with only about 15dB left on my volume control
In fact to get comparable volume levels from my 2 sets of speakers I use the D200 into the Quads at full gain and the 30 watt Class A (gain set at -12dB) into the horns. How loud the Quad would go with Quad valve amps (apart from their Eightys) I wonder.