16th Mar 2019, 7:07 am
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#12
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Nonode
Join Date: Aug 2010
Location: Resolven, Wales; and Bristol, England
Posts: 2,612
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Re: Pre-amp for Linsley-Hood?
Quote:
Originally Posted by Synchrodyne
Quote:
Originally Posted by ronbryan
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That used a shunt feedback RIAA stage, which H.P. Walker later demonstrated (with supporting mathematics) had a rather poor signal-to-noise ratio (14 dB worse) as compared with a series-feedback circuit. On that basis the H.P. Walker modules might represent a better starting point for suitable circuits from approximately the same period.
The H.P. Walker circuits may be found in WW 1971 May, p.221ff, and WW 1971 June, p.295ff. His article on low-noise amplifiers was in WW 1972 May p.233ff, and the resulting debate with JLH occupied WW 1972 August p.389, WW 1972 November p.520, WW 1973 January pp.11,12, and WW 1973 April pp.193,194. All worth reading…
Cheers, |
Thank you! More research is needed then… I look forward to reading the debate between HPW and JLH!!
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Richard
Index:
recursive loop: see recursive loop
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