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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: Re: Hi MQ posted by Scholl on April 10, 2004 at 07:44:53:
Hi Scholl,I agree, the problem is coming up with an interstage that can handle phase splitting *and* handle the voltage drive requirements of a DHT output stage. Finding none, we gave up on that approach.
Instead, we use the superb LL1676 input transformer from Lundahl, which gives beautifully symmetrical phase splitting and excellent bandwidth (~8 Hz - 140 kHz). This allows the use of push-pull interstage transformers in the subsequent higher-level stages. The Lundahls have also served us well in these applications.
The only trouble is that the LL1676 isn't easy to drive, so must be fed from a low impedance. Gotta get that new Raven done!
Gary Dahl
"So many tubes, so little time..."
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Follow Ups
- the devil in the interstage - gdahl 09:14:30 04/10/04 (0)
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