The toroids has arrived.
The smallest one in the picture is supposed to be a 500VA 2x115.
An externally hosted image should be here but it was not working when we last tested it.
BUT it´s now a 50VA 2x15
Talked to airlink they apologized and makes me a new one in a week !!!!!
This is now officially the Murphys law OTL amp.
50VA 2x15?
Thats a shame....What Transformer specs are you using?
Do you know the physical size of the 500VA 2x115.
Can you build arround it. (leave a space).
Are all the others OK?
Regards
M. Gregg
I got the measurements for the toroid but there´s a little lack of trust right now.
It´s very crowded inside so i´ll finish the small signal HT and then it´s back to waiting.
I used
TT0913.<<Airlink.
I had no problems with them. YMMV.
Do you not trust them?
Regards
M. Gregg
I used
TT0913.<<Airlink.
I had no problems with them. YMMV.
Do you not trust them?
Regards
M. Gregg
Thats a nice one with shield, didn´t spot it.
Change of order coming up.
No problem with trusting Airlink.
Just a little anger management fighting windmills and i´ll be my nice self again LOL
What mains supply voltage do you have?
Post 66# and 67#and 68# this thread.
Depends on your input mains voltage!
Sure you will get there, I found this a strange build it can be tight for room. Also I had to retrain myself to think current first then voltage. Because normal valve is voltage first then current is normaly low.
Regards
M. Gregg
Post 66# and 67#and 68# this thread.
Depends on your input mains voltage!
Sure you will get there, I found this a strange build it can be tight for room. Also I had to retrain myself to think current first then voltage. Because normal valve is voltage first then current is normaly low.
Regards
M. Gregg
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Just a quick comment while I remember,
http://www.diyaudio.com/forums/tubes-valves/183896-high-end-preamplifier-ecc82-21.html
This links to the neon protection Grid-cathode.
More information!
Regards
M. Gregg
http://www.diyaudio.com/forums/tubes-valves/183896-high-end-preamplifier-ecc82-21.html
This links to the neon protection Grid-cathode.
More information!
Regards
M. Gregg
Last edited:
This is now officially the Murphys law OTL amp.
Well,--You can guarantee if I'm in the slightest bit involved in a project, It will definately turn into some kind of Audiophile Faulty-Towers.....
Murphy's Law OTL....
Hmm-- I quite like it!
Well-- I'm gonna bring this OTL into the '21st century'.....
Just bought one of these from fleagay--
eBay - The UK's Online Marketplace
I'm fed up of having to get up and turn volume down when SHMBO complains its too loud....!
Just bought one of these from fleagay--
eBay - The UK's Online Marketplace
I'm fed up of having to get up and turn volume down when SHMBO complains its too loud....!
Well-- I'm gonna bring this OTL into the '21st century'.....
Just bought one of these from fleagay--
eBay - The UK's Online Marketplace
I'm fed up of having to get up and turn volume down when SHMBO complains its too loud....!
That looks interesting!
Your going to build a mark 2 aint ya?
With lots of pictures.
Yep loads of volume with just one heater running....
LOL.....
Regards
M. Gregg
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Yup--Need to make something that at least Looks half tidy.
Currently (And this is why there's no pics) the current version looks nothing much more than a breadboard-in-a-box.--ie, a Pile 'o scrap...
--Sounds nice though!
Ive been messing round since I first built it, so many variations and alterations, a 'nice' build wouldn't have got modded much, so would have limited 'research'....
Only one thing more I would like to try, and thats to MOSFET load the second gain stage,--See if its worth the effort...
--I tried MOSFET followers driving the 6C33C, but no huge leap forward in sound for the extra parts etc, so has returned to the scheme as you have it....
Currently (And this is why there's no pics) the current version looks nothing much more than a breadboard-in-a-box.--ie, a Pile 'o scrap...
--Sounds nice though!
Ive been messing round since I first built it, so many variations and alterations, a 'nice' build wouldn't have got modded much, so would have limited 'research'....
Only one thing more I would like to try, and thats to MOSFET load the second gain stage,--See if its worth the effort...
--I tried MOSFET followers driving the 6C33C, but no huge leap forward in sound for the extra parts etc, so has returned to the scheme as you have it....
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