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2nd November 2005, 01:36 PM
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#11 |
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diyAudio Member
Join Date: Oct 2003
Location: Rome
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Can you reseed the attachment (is 0 byte!!!) or e-mail at my address:
andrea.bonelli3@tin.it Thanx in advance Andrea |
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3rd November 2005, 12:55 AM
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#12 |
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diyAudio Member
Join Date: Mar 2005
Location: HK
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Here is the schematic again.
It is grid-bias with a 249K resistor connected to a -23V DC. This part is out of this page. I am thinking of turn it into cathode bias. But the B+ in this schematic is 450V and I can't find any reference with B+ of 450V. |
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3rd November 2005, 11:25 PM
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#13 |
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diyAudio Member
Join Date: May 2005
Location: Pretoria, South Africa
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Just a mite from me:
For some reason I could not download your circuit. I have tried to locate EL84 data that I have here somewhere, but also unsuccessful. But as I recall working an EL84 into 4K instead of 8K lowers the max. output to about 65% of the 8K value, with some rise in distortion. What mainly worries me is the quite high 450V on your EL84s. Not that they will spark, but at a maximum dissipation of 15W (anode + screen), you can draw a max. current of 34 mA/tube. Is this happening? |
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