Thanks for the kind words and the attention to that A7 post. It seems that there is really two camps of opinion concerning the use of 416/515 and the pair of woofers were really interchangeable in as far as Altec provided them in stock A7 units. But their specs are different which brings up that post. I see after reviewing the lit I sent it mostly deals with pro applications and it also exposes the 416 as the A7 driver of choice.
However the Hiraga set-up and the Exemplar both use the Ferric version of the 515; I would be interested to know of anyone else who favored that system. There must be a reason those drivers go for 600$ a piece.Congradgulations on your set-up; I know it sounds great.
Man I am still in a quandrey concerning amps; I will send you a schematic for a nice simple 813 tube SE I stumbled upon that looks promising. It provides 20 clean watts of power and seems simple to build but gets high marks for immediacy and detail. One of Doug's favorite tubes.
As a point of reference I believe Jean Hiraga uses his 20 watt class A SS amp on his A5's.
I am still waiting for Doug to come up with the 12b4 circuit for Guinevere; I posted that I was tearing it down to put it in a better enclosure and he suggested I wait for the new schematic before going ahead with it.
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