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OTL Asylum OTL, Output Transformerless Amplifier User Group. |
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In Reply to: Re: But then why have an OTL? posted by Lew on October 22, 2004 at 07:39:48:
I should have noted that the "need" for Zeros is really related mostly to the output impedance of one's OTL. I am running my Atma-sphere amps with no negative feedback (NFB), so the output impedance is purely determined by the plate resistances of the output tubes (and their mu), and it's relatively high. I do need Zeros to drive my Sound Lab M1s, which have an impedance minimum of about 4 ohms at 500Hz. If one is using an OTL with significant NFB and a resulting low output Z (the Transcendent comes to mind), then perhaps you do not need a Zero to drive a nominal 8-ohm speaker.
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Follow Ups
- Addendum - Lew 07:48:04 10/22/04 (2)
- I see, thanks...I assumed ... - Dr. Philosophy 07:58:25 10/22/04 (1)
- Re: I see, thanks...I assumed ... - Lew 10:14:00 10/22/04 (0)
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