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 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

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It is currently 18 Jul 2019, 07:35

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 Post subject: Re: Baxandall circuit
PostPosted: 26 May 2019, 20:35 
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Joined: 23 Feb 2017, 02:02
Posts: 496
If any resistor blows thats likely the schematic or installation plorbem, resistor defects are extremly rare, let along say cheapo transitors from china cost you $1USD for 200-400pcs, never had any defects or plorbems from these cheap like for free transistors


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 Post subject: Re: Baxandall circuit
PostPosted: 05 Jun 2019, 07:53 
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Joined: 07 Oct 2010, 14:15
Posts: 10
Hi
Just checking ....I have 4S I built some time back in storage which worked perfectly. I drifted to vintage Solid State over the years as I found I needed EQ but am now drifting back to valves/tubes. I don't need a defeat ....so is the first circuit posted in this thread still valid to mod my 4S to add tone controls?
Thanks
Mike


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 Post subject: Re: Baxandall circuit
PostPosted: 05 Jun 2019, 09:44 
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Joined: 13 May 2016, 02:02
Posts: 129
Location: Javea, Spain
I've been playing with variations of this circuit for nearly a year now. The best circuit is on page 3 of this thread. If you use one tube for the 2 buffers and one tube to gain back your missing 20 dB on each channel, you can still tube roll. I rewired my 4S rather than build from scratch,and it worked fine. I didn't wire in a defeat switch on my last build.


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 Post subject: Re: Baxandall circuit
PostPosted: 05 Jun 2019, 09:58 
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Joined: 07 Oct 2010, 14:15
Posts: 10
Thanks John!


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