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Old 26th November 2006, 12:05 PM   #1
Amp_Nut is offline Amp_Nut  India
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Default Need info on RCA 813 used in Tube Amp


I have access to a couple of RCA 813 tubes, and was wondering if they can be put tyo good use as Audio Power Amp tubes ?

Any pointers to circuit diagrams, and feedback on how this tube sounds, would be Greatly apppreciated.

Thanks for your time
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Old 26th November 2006, 01:02 PM   #2
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Best regards: Holger
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Old 26th November 2006, 01:21 PM   #3
Amp_Nut is offline Amp_Nut  India
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Thanks HBarske !

Any subjective opinion on how this tube sounds ?

Much appreciated
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Old 27th November 2006, 08:30 PM   #4
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Default The 813...

I'm developing an 813 SE with SS rectification, chokeless PSU.
The 813 as i've heard is rather a smooth nuetral my configuration about 45 WPC. The 813 is easily driven..easier than a 300B. The wildcard is doing the power supply..mine, 900 VDC.
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Old 10th December 2006, 12:45 AM   #5
AtomiKM is offline AtomiKM  United States
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Default what about a matrix amp

steve bench has a matrix amp design on his page using 2 813's that according to him will output 66wpc!!!
heres the link
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