| Re: Single Ended Amp for Electric Bass [message #27260 is a reply to message #27258] |
Thu, 06 April 2006 06:55  |
Damir
Messages: 1005
Registered: May 2009
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Illuminati (2nd Degree) |
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IMO - go for it, nice "vintage" sound, loud enough just for practice/recording. If you have active, high - output bass with built-in EQ, then you can use just one tube driver, say D3a trioded. Clean and direct, full, "vintage" sound. If you choose "traditional" 2A3 OP (Uak=250V, Ugk=-45V, Ia=60mA, Ra=2k5), then you`ll have B+ about 300V, and D3a can work with say 12k resistive load and Rk=200R bypassed (470ยต), Ia~10mA, A~57.
If you choose "traditional" two-tube preamp with "tone-stack" in between, you have many possibilites - I`d try 6C45Pi, 5687/E182CC, E180CC, E180F trioded...
Grid choke on 2A3 reccomended, and some form of "rubber" mounting 2A3 socket (vibrations!).
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