Intact Audio

A question related to the use of the AVC. I have fitted mine and am very pleased with the overall result as the resultant sound is significantly better than my old Sowter TVC. However, I have a question about the loading of the AVC. Let me start by saying that my AVC is driven by a Lundahl 1689AM/PP...

I wonder if one of the clever chaps that reside here can offer up a model or two for MV rectifiers. I would be interested in a generic model or specific ones for 866a & RG1/250 (simply an awesome tube rectifier).

Andy

Slage AVC versus Sowter 9335 I have what is essentially a balanced Izzy-Wizzy (http://www.izzy-wizzy.com/audio/preampnew.html) preamp which uses a Lundahl LL1660AM/PP wired as a 2.25+2.25:1 to drive a Sowter 9335 TCV. I have always been happy with it but the idea of trying a Dave Slagle AVC was too ...

I have suspected its a bit over the top for indirectly heated tubes. But to ask you some questions, 1 would you have a CCS for each tube or for each channel? 2 what circuit would you use for the CCS? 3 would you set the voltage "correctly" for each tube or just go with the rated heater cur...

Sorry this post is a bit long. Past experience of Stephen (of Izzy-Wizzy fame) and myself (we have worked both together and separately on pre-amps for 12 years or more) indicates that:- 1. regulated heaters following a cap input filter don’t sound as good as RC type feed following a choke input stag...

I had a look thru the Help text and did a Google. I understand the equation to use to construct an inverse RIAA which is laplace=(1+1.003180*S)*(1+1.000075*S)/((1+1.000318*S)*(1+1.00000318*S)) if one wishes to include the 3.18uS time constant as well. I have tried the voltage controlled current sour...