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In the Forum: Melquiades Amplifier
In the Thread: The 6E5P tube data.
Post Subject: 6E5P for salePosted by hagtech on: 2/21/2008
Do you plan to develop this amp to a commercial product?


Yes, this is slated for production.  But I really doubt I will sell many.  Perhaps a few pairs.  It's a bit out of the mainstream.  Really need to use them with something 100dB+.  Mostly I wanted to prove out the new topology.  On paper I have come up with version #2 for 20 watts at 1 ohm output impedance.  It is a beast, using four 6080 output tubes per channel.  They don't have the linearity of the DHT, but they solve the damping factor problem.  They will be usable with a much wider range of loudspeaker.

I sort of ran into a power limit.  Without resorting to feedback, you can't get much power out of a tube amp.  Is it stupid to tie my hands like that?  Maybe.  I just wanted to make a powerful tube amp.  Doing some research, it turns out everyone else is using feedback.  From Quicksilver to Lamm, they all use it.  Lots of feedback in both PP and SE models.  That's how they get decent power and high DF.  Suppose if you're going to drive Wilsons then you need to do such.  That road isn't for me.

The IT may not be the best.  I had a lot of issues with it.  However, in the space alloted, I cannot fit a Lundahl (something like a 1635).  Believe it or not, I am using the humble Hammond 124B.  It has a lot of nickel in the core for low distortion.  It can also handle the very high voltage swings. 

jh

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