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Post by cenafria on Oct 26, 2013 8:01:12 GMT -6
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Post by tonycamphd on Oct 26, 2013 9:36:59 GMT -6
nic job! love it..when i first clicked into the page, all i could see was a small part of the top of the 1st picture, it looked like a slice of works pizza with the reflection 8)
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Post by cenafria on Oct 26, 2013 10:03:41 GMT -6
Thanks! I think we are starting our path into a (hopefully) serious diy addiction. We have some other output transformers that I wanted to try out on this amp (hammond, classic tone, heyboer). I'm liking the sound so much though, that I'm reluctant to change anything 8) I see some more champs in our future, and a 5E3, another amp I've always liked.
So you thought "what? They made a diy 4w single ended tube pizza?" Hee, hee...
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Post by tonycamphd on Oct 26, 2013 10:34:14 GMT -6
what kind of voltage courses through that thing? be careful broman, tube circuits are nasty!!!
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Post by cenafria on Oct 26, 2013 10:47:53 GMT -6
Thanks for the advice. We are very careful. 340v of dc could really ruin your day.
We've been servicing our tube amps and most of the studio's equipment for a while (we get lots of help from experts from three countries). Just never got around to building anything. Boy, we were missing all the fun!
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Post by svart on Oct 28, 2013 12:26:58 GMT -6
Remember that voltage doesn't kill people, current kills people. You can have very high voltages and not be in any *real* danger, like in "tasers". The power supplies in a lot of tube circuits supply currents in the range that can seize the heart muscle. Higher currents are actually safer because they will burn the skin and break the circuit, however nothing is really safe.
A common 9V battery has enough to kill a person, but 9 volts is below the 15V skin-conductivity threshold..
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Post by cenafria on Oct 28, 2013 12:45:01 GMT -6
Svart, thanks for the correction. We are careful, even if we have a lot to learn here.
The amp sounds phenomenal. Better than my recollection of a blackface champ I had years ago. Sound like dragon's breath when playing chords on our late 50's Jnr and the volume at four or five.
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Post by tonycamphd on Oct 28, 2013 12:45:46 GMT -6
Remember that voltage doesn't kill people, current kills people. You can have very high voltages and not be in any *real* danger, like in "tasers". The power supplies in a lot of tube circuits supply currents in the range that can seize the heart muscle. Higher currents are actually safer because they will burn the skin and break the circuit, however nothing is really safe. A common 9V battery has enough to kill a person, but 9 volts is below the 15V skin-conductivity threshold.. note to self, no suicide attempts with 9v battery, unless of course, i get really good contact..8) good stuff Svart |
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Post by svart on Oct 28, 2013 13:43:36 GMT -6
It's commonly called the "death range". 20mA to 200mA is the range that will cause the heart to go into fibrillation. Above this, the heart can stop entirely which can actually allow a person to live. Nerve damage can occur at 1A. Above 2A you start to see significant burns and tissue damage.
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Post by dandeurloo on Oct 29, 2013 15:31:43 GMT -6
I built one of those amps and LOVE it. Great studio amps.
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