| EL32 tube - Click HERE for Original Thread |
| ksd09 |
Hi diyer!
I made one amplifier with two EL32s.
but, the sould is OK but, doesn't make me satisfy.
Anybody have amplifier schematic with this tubes?
I have tested with triode mode and pentode mode too.
but, the sound doesn't getting better.:dead:
I hope to hear from expert of this tube.:xeye:
bye |
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| bournville |
I have not come across this tube used in the output of any quality amplifier - I've seen it used as the output in old AC/DC receivers and I believe it was used in car radios also, as the heater current was quite low (200ma).
Its most popular use in the UK was in switching gear in telephone exchanges where its low power consumption and low heat generation enabled large numbers of these tubes to be used in close confinement. I have several of these tubes in their CV and VT equivalents (CV1052 and VT52) all stamped GPO (General Post Office), who used to run our telephone exchanges until the 1980s. It was used in Services equipment also because of its economy in power use.
It is the electrical equivalent of the EL2 - a European side contact tube of the 1930s - as radio designers in the UK generally preferred to use octal types as opposed to the side contact tubes made popular at one time in Europe by Philips and Mullard. |
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| jacky |
| Really hard to tell what is the problem or it is just the way it is with the EL32 tubes. Would you be able to give more detail (like circuit, bias point, transformer used etc.)? Also what is your reference for good sound or OK sound? Did you compare with other better known tube amp? |
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| ksd09 |
I did try it on triode mode.
The sound is good. |
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| jacky |
Definitely not. The Vt-52 in those links is a direct heat triode. EL32 is a pentode. |
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| jacky |
| quote: | Originally posted by ksd09
I did try it on triode mode.
The sound is good. |
I thought previously in your first post you said " you have tested with triode mode and pentode mode too but, the sound doesn't getting better. "
What do you mean by "The sound is good?" How does it compare with other tubes? |
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| fdegrove |
Hi,
Yes, BUT this EL32 is equivalent to British RAF VT52 not the US army VT52...
The latter is the DHT triode 45....A small 2A3, if you like.
Cheers,;) |
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| ksd09 |
I want to hear from your own experiance.
Not just guess as if.
I have change bias and power volts,G2 volts and pre tubes.
I have tested the mode of pentode cause of it's a pentode.
but, when i changed the mode from pentode to triode, it's good ,
Finally, The mode of triode is better than pentode.
and sound good on my bias and pretubes.
Thanks. |
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