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Old 11th May 2005, 04:36 PM   #591
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Default Oil Tanks!lol

I also use oil tanks in my psu's.I tend to use ASC or GE.Built 7 amps including a preamp and keep learning with each one.As I said b4 nice work.
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Old 14th May 2005, 01:25 PM   #592
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Talking Pse2a3

"I also use oil tanks in my psu's"

As promised here's a photo of my latest prototype:PSE 2A3 direct coupled driven by 6n7's in parallel.Psu consists of 3 10H chokes and absolutely minimal ripple.Sounds amazing,detailed,open and with bass to die for.Gonna do a decent looking version now I've ironed out the teething troubles.Balanced out at 115mA per channel on the output section and 5mA per channel on the 6n7's.DC filament supplies on the input AC with humpots on the output.Will post the schematic as soon as I've drawn it.
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Old 14th May 2005, 02:58 PM   #593
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Default SE 50EH5 Pentode Tube Amplifier

Attached are a couple shots of my latest amp. It is a single ended 50EH5 pentode. You can visit my website for more info.

First picture - Front
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Old 14th May 2005, 02:59 PM   #594
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Default Re: SE 50EH5 Pentode Tube Amplifier

Last Picture - Back/side view

There are a few more picture on my webpage.
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Old 14th May 2005, 03:14 PM   #595
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Gentlemen, have you children ? Are in Canada the same safety regulations, like in rest of the world ?
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Old 14th May 2005, 03:43 PM   #596
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Quote:
Originally posted by Upupa Epops
Gentlemen, have you children ? Are in Canada the same safety regulations, like in rest of the world ?
No childern, but I do keep my tubes about 5 feet off the ground.

Safety in Canada? Sure ... the amp is grounded, the heaters run off of the mains (not the wall socket) and it is fused. The hot tubes are much safer to children (or cats) than an hot element on a stove or candle / scent pot on a table.
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Old 14th May 2005, 04:04 PM   #597
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By stove child know, that it is hot, by tube probably not. Safety regulation for home electronic says ( and I hope that in Canada is it also the same ) : " Any by finger touchable part must not have temperature over 60 C ". I recomend to you read some safety norms - they are not for joke .
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Old 14th May 2005, 04:39 PM   #598
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One does not hear often of folk building 50EH50 amps...

How does it sound?

Regards,
Bas

Quote:
The hot tubes are much safer to children (or cats) than an hot element on a stove or candle / scent pot on a table.
I agree.
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Old 14th May 2005, 04:54 PM   #599
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Inside of pot aren't 500 V DC .
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Old 14th May 2005, 07:27 PM   #600
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Quote:
Originally posted by Upupa Epops
By stove child know, that it is hot, by tube probably not. Safety regulation for home electronic says ( and I hope that in Canada is it also the same ) : " Any by finger touchable part must not have temperature over 60 C ". I recomend to you read some safety norms - they are not for joke .
Well, a child will not know that a stove is hot unless he touches it or is told that it is hot. Obviously I will tell childeren that the tubes are hot. Most heating electronics such as stoves and heaters are hotter than 60C and touchable by a finger. Heck, a curling iron must be hotter than 60C...and that goes against your head!

Quote:
Originally posted by Bas Horneman
One does not hear often of folk building 50EH50 amps...

How does it sound?
Listening has been good so far. Becuase of the small OT, you do not get full bass extension. Mid-range and highs are very clean and clear. I really need to build a decent set of speakers. When I do, I will listen to my various amps critically and compare with my K-12M amp.

Indeed, the 50EH5 is not common. I have only seen two other 50EH5 amps on the internet thus far. You can link to them from my webpage. However, of the limited amount of old tube consoles and TVs that I have come across, the 50EH5 is the most common.
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