2 different matched pair of el84s in a Liverpool

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Guy77
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Joined: Sat May 31, 2014 2:46 am
Location: Toronto, Canada

2 different matched pair of el84s in a Liverpool

Post by Guy77 »

I am just finishing of a trainwreck liverpool , photos below (vvr and type 3 master vol installed). I currently have 2 different matched pairs of el84 tubes. I was wondering how I should arrange them in the amp. Should i place each match pair on either side of the output transformer wires (Ex ABAB)and then use a separate resistor to bias each matched pair of tubes. So each matched pair sees the same cathode bias resistor? Can the resistors be the same value Ex 120 ohms each?

Thanks in advance.

Guy77
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RockinRocket
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Joined: Sun Nov 20, 2011 5:23 am

Re: 2 different matched pair of el84s in a Liverpool

Post by RockinRocket »

Match the two in the middle and match the two on the outside. If the two pairs are not closely to being matched you could use two different resitors. Id just match them the way I described and see how it sounds
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Guy77
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Joined: Sat May 31, 2014 2:46 am
Location: Toronto, Canada

Re: 2 different matched pair of el84s in a Liverpool

Post by Guy77 »

Thank you RockinRocket! I will try it the way you mentioned and also use the same resistor . I will post back in a week when I am done.

Cheers

Happy long weekend everyone!
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