TVC Linestage (BD-Design)

by GC, Thursday, March 24, 2005, 11:19 (6973 days ago) @ GC

Hi Brian,

Good to hear from you.

I was looking at the S&B site and I think the +6db helps level but with it
comes a reduced BW, more significant at the bass end. With a typ 0.4v
average voltage from the Twindac+ the input sensitivity of the power amp
must be around 0.4v me thinks?

Yes at least 0.4V, possibly more for some extra headroom. And you are right about the 6db tap, it would make matters worse due to the high TwinDAC ouput impedance.

Its the usual compromises and choices I guess. You could increase drive by adding a simple valve stage before the TVC, but this adds more active components to the main (Oris) output. Or you could live with the lower drive to the main output, but compensate with some EQ and higher gain in your bass amps.

PS have you built the new amp yet, the one without o/p transformers?

Yes, Transcendant SE OTL working for a month or so now and sounding very nice. I've not done any side by side comparisons yet with the 2A3, but I will do so soon!

Kind regards,

Jonathan

PS. What amp are you planning on building/buying for the Oris?

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