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50W monoblock "Engineers Amp"
50W monoblock "Engineers Amp"
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Old 22nd January 2017, 06:07 PM   #21
Tubelab_com is offline Tubelab_com  United States
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Quote:
6EW6 is another pin compatible input tube with high gm, and quite linear. Worth a tube roll.
I had them in my amp at one time. I remember that they were better than the 6CB6 (more gain), but I settled on the 6GU5, possibly because I had more of them.

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I know, I am being conservative... but it seems like many people are a risk building these things. I don't want any electrocutions, or fires...
I was just being......UH me! Big power requires big voltage. The 125 WPC flavor needs 600 to 650 volts. I have been tinkering with a big sweep tube amp that runs on about 720 volts. Still working out the details, but it won't be any time soon.
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Old 22nd January 2017, 08:08 PM   #22
pmillett is offline pmillett  United States
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Originally Posted by jazbo8 View Post
Sorry about that, I thought Pete had his own store...
I have an eBay Store. This board appears there now. EBay takes forever these days to index new listings - it used to take a few minutes, now 24 hours.

Pete
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Old 22nd January 2017, 08:11 PM   #23
pmillett is offline pmillett  United States
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Quote:
Originally Posted by Tubelab_com View Post
I was just being......UH me! Big power requires big voltage. The 125 WPC flavor needs 600 to 650 volts. I have been tinkering with a big sweep tube amp that runs on about 720 volts
We wouldn't want you to be anything else!
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Old 22nd January 2017, 08:45 PM   #24
vinylkid58 is online now vinylkid58  Canada
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Originally Posted by audio king View Post
I've got several Dynaco MKIII's hanging around. I wonder how well these OPT's would work in this design? Primary impedance seems to be the same.
I was looking at new mkIII transformers, comparing prices against the Hammond and what Edcor has to offer. Using existing mkIII's would save you a bundle, even thou the Edcors are quite cheap compared to the others.

jeff
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Old 22nd January 2017, 08:48 PM   #25
audio king is offline audio king  Canada
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Edcor makes lovely transformers,but the shipping costs are ridiculous.
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Old 23rd January 2017, 01:27 AM   #26
TheGimp is offline TheGimp  United States
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This is really what I need, another project.

I'm just finishing my daughter's SE amp for her tv system that I promised her two years ago. Not a real problem as I loaned her my amp, but just saying.....
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Old 23rd January 2017, 01:33 AM   #27
vinylkid58 is online now vinylkid58  Canada
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Originally Posted by audio king View Post
Edcor makes lovely transformers,but the shipping costs are ridiculous.
Transformers are heavy.

jeff
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Old 23rd January 2017, 02:28 AM   #28
TonyTecson is offline TonyTecson  Philippines
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50W monoblock "Engineers Amp"
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Originally Posted by pmillett View Post
We wouldn't want you to be anything else!
seconded and agreed......George is the tube torture man.....
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Old 23rd January 2017, 02:51 PM   #29
jackinnj is offline jackinnj  United States
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50W monoblock "Engineers Amp"
I am looking at the pic linked below, and wondered whether Pete's mother every yelled: "You're gonna electrocute yourself!":

50W monoblock "Engineers Amp"
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Old 23rd January 2017, 03:40 PM   #30
overtheairbroadcast is offline overtheairbroadcast  Canada
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Originally Posted by jackinnj View Post
I am looking at the pic linked below, and wondered whether Pete's mother every yelled: "You're gonna electrocute yourself!"
I can better imagine it as, "Why are the lights in the house dimming? Are you making another vacuum cleaner again??"



This looks to be a very interesting project.
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