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In the Forum: Melquiades Amplifier
In the Thread: Building Melquiades: Chronicle of full-range
Post Subject: I thought to drive the 6C33C harder. What a Moron I was!Posted by Romy the Cat on: 7/8/2006
Jim, I did try the anti-phase transformer in the secondary but I felt that it did something to sound. I can not do it on primary as I have the pate coil for the first stage sitting on the same transformer. Regarding the sweet spot of the 6C33C - I have a half of the site dedicated to this subject :-). The 6C33C is tricky little bastard and it’s best operation point vary form man y different thighs. In context of the given amps I have limited transformer of 200mA and I drive the second stage with 185mA. The first Melq was using 200V on plate and it sounded very good. The 200V was found after many-many days of experimenting and listening with all imaginable voltages, currants, dropping resistors, OPT sections configurations and so on… However, it was all I context 200mA gap in the transformer as Lindale has not enough core to hold masonry inductance if I go for higher current. Still, Dima and I were experimenting with the Melq sound truing the tube do not manifest sonic deficiently nether neither in current nor in voltage. It looks like at 200/200 it slicked very well… In the super Milq where I have no limits in the transformer core and what I have no demands for inductance the story was different…
Making this amp I foolishly went for 300V secondary coil instead of 240V as I did in the older Melq. I thought to drive the bitch harder and make it sort of universal amps that would be able to drive with 60W dissipation all those 95dB sensitive speakers. So, I did, but I screwed up the quality of sound. Perhaps if I have larger transformer it might be fun to try what it out of the 200mA but the result that I got out of Lindale was so acceptable that I had no motivations to search for other transformer.
BTW, Jim, did you view my question about the crazy swinging input shock that I've sent you another day?
Rgs,
Romy
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