What tubes for a tube amp? - Page 60

dady · 27th July 2012, 10:39 AM

I just guessing what was happening with this season.
A heat wave invades Europe and come to the south! I said my self something different happen in Holland"
Just happen a month the hot sumer became unsupportable.
LOL! and congratulations.

farkincza74 · 19th September 2012, 04:21 PM

Hi!
Which 6BL7 use instead? Soviet tube should.
Thanks

pb1234 · 20th September 2012, 02:52 AM

In the final MullardEL34 schematic, post 247 and attached, the effective Vpp voltage across the driver 6SN7 V4 is 620V. If the grid bias voltage on the final 6AS7s is in the range of -65V to -75V for Class A (say -70V), as delivered at the cathodes of V4, then the net voltage across V4 is about 380V. Seems awfully high as the 6SN7 spec sheet says 300V max. What am I missing?

TV7 · 24th September 2012, 07:10 AM

Quote:

Originally Posted by aardvarkash10

tubes able to deliver a LOT of current, preferably at relatively low operating voltage. Big horizontal sweep tubes come to mind...

Tell me more

PET-240 · 24th September 2012, 09:00 AM

G'day TV7,

You just up the road from me.....

It'd be easier to read the thread, there is so much here, first 6-8 are really interesting, currently sorting my trannies for a set of M60 clones as the NO NFB attracts me.....a lot. I have a set of other OTL monoblocks in build stage as well when I came upon this thread. I could give you basics but it's worth the read.
Pm me and could have a yarn.

Cheers,

Drew.

BUIZERD · 20th January 2013, 07:50 PM

Anyone bulding these amp's????
It's a little bit silent here.

PET-240 · 20th January 2013, 08:41 PM

I have been collecting parts, talking to Ralph at AtmaSphere, he has been very helpful and understanding, did me up a mini kit with the factory instructions, very generous indeed.
Hoping to complete by June.
Yourself?

BUIZERD · 09:32 PM

As you can see in my avatar, I have them up and running for a while now, and i'm very satisfied, I have only a very small hum in the background, but that's because I do not have a balanced preamplifier.
Is it perhaps possible to share your talk with Ralph with us, we don't see him so often on this board lately.

BUIZERD · 20th January 2013, 09:30 PM

Here you go

BUIZERD · 20th January 2013, 09:36 PM

Here's another one.

27th July 2012, 10:39 AM	#591
dady diyAudio Member Join Date: Oct 2002 Location: Punta Prima, Menorca, Spain	I just guessing what was happening with this season. A heat wave invades Europe and come to the south! I said my self something different happen in Holland" Just happen a month the hot sumer became unsupportable. LOL! and congratulations. __________________ Esteban Bikic

20th January 2013, 09:07 PM	#598
BUIZERD diyAudio Member Join Date: Jan 2011 Location: Near Rotterdam	As you can see in my avatar, I have them up and running for a while now, and i'm very satisfied, I have only a very small hum in the background, but that's because I do not have a balanced preamplifier. Is it perhaps possible to share your talk with Ralph with us, we don't see him so often on this board lately. Last edited by BUIZERD; 20th January 2013 at 09:32 PM.

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19th September 2012, 04:21 PM	#592
farkincza74 diyAudio Member Join Date: Mar 2012	Hi! Which 6BL7 use instead? Soviet tube should. Thanks

24th September 2012, 09:00 AM	#595
PET-240 Contributor diyAudio Member Join Date: Feb 2010 Location: Brisbane Northside	G'day TV7, You just up the road from me..... It'd be easier to read the thread, there is so much here, first 6-8 are really interesting, currently sorting my trannies for a set of M60 clones as the NO NFB attracts me.....a lot. I have a set of other OTL monoblocks in build stage as well when I came upon this thread. I could give you basics but it's worth the read. Pm me and could have a yarn. Cheers, Drew.

20th January 2013, 07:50 PM	#596
BUIZERD diyAudio Member Join Date: Jan 2011 Location: Near Rotterdam	Anyone bulding these amp's???? It's a little bit silent here.

20th January 2013, 08:41 PM	#597
PET-240 Contributor diyAudio Member Join Date: Feb 2010 Location: Brisbane Northside	I have been collecting parts, talking to Ralph at AtmaSphere, he has been very helpful and understanding, did me up a mini kit with the factory instructions, very generous indeed. Hoping to complete by June. Yourself?