#26 pre amp - Page 244

mogliaa · 3rd February 2013, 06:10 PM

Quote:

Originally Posted by massimo

And what about the special LL2745 developed for Thomas Meyer? He promised to report but it was march.

Ciao Massimo,
I've been using the LL2745 lately in 5.6:2 for a tad more of gain but without increasing too much the output resistance and the performance is really good. I prefer this one compared to the LL1660.
cheers,
Ale

andyjevans · 3rd February 2013, 06:20 PM

That's interesting. I just tried out the LL1635 in 1:1 and it's disappointing - light on bass and less detail than the LL1660. I have a LL1692 I can try

mogliaa · 3rd February 2013, 06:24 PM

I don't think 1:1 is a good approach for the 26. The Ra is too high so probably won't be great in bass and less efficient driving your cables and amp input. If you need more gain go for increasing the gain of your driver instead?

amandarae · 3rd February 2013, 06:29 PM

Is it really necessary to suspend the 26 tubes from the chassis? Just want to know.

rclourenco · 3rd February 2013, 06:56 PM

Last photos from the work done on the main chassis, now will start with the PS, hope you all enjoy it.

merlin el mago · 07:27 PM

It's really a pleasure look your work, it's always an inspiration, thanks to share. These four tubes are VR regs. or are you including a phono stage?

Wavebourn · 3rd February 2013, 07:25 PM

It looks neat outside, but to me it is always torture to see heatsinks with fins oriented perpendicularly to air flow. Like sandpaper on teeth. :-)

Vinylsavor · 3rd February 2013, 07:51 PM

Hi Rui!

Quote:

Originally Posted by rclourenco

Last photos from the work done on the main chassis, now will start with the PS, hope you all enjoy it.

Excellent job! Very neat wiring! Congratulations!

Thomas

mogliaa · 3rd February 2013, 08:07 PM

Hey Rui, it looks superb! Well done! How much work left for a first listening test?
Ale

rclourenco · 3rd February 2013, 08:24 PM

Quote:

Originally Posted by merlin el mago

It's really a pleasure look your work, it's always an inspiration, thanks to share. These four tubes are VR regs. or are you including a phono stage?

Thanks, these are VR tubes!

3rd February 2013, 06:24 PM	#2433
mogliaa diyAudio Member Join Date: Dec 2009 Location: London	I don't think 1:1 is a good approach for the 26. The Ra is too high so probably won't be great in bass and less efficient driving your cables and amp input. If you need more gain go for increasing the gain of your driver instead? __________________ "A mistake is always forgivable, rarely excusable and always unacceptable. " (Robert Fripp) http://www.bartola.co.uk/valves/

3rd February 2013, 07:07 PM	#2436
merlin el mago diyAudio Member Join Date: Sep 2009 Location: Catalonia new Europe state	It's really a pleasure look your work, it's always an inspiration, thanks to share. These four tubes are VR regs. or are you including a phono stage? Last edited by merlin el mago; 3rd February 2013 at 07:27 PM.

3rd February 2013, 07:25 PM	#2437
Wavebourn diyAudio Member Join Date: Sep 2006 Location: Pleasant Hill, CA	It looks neat outside, but to me it is always torture to see heatsinks with fins oriented perpendicularly to air flow. Like sandpaper on teeth. :-) __________________ If I disappear suddenly, that means I finally created a time machine and pushed wrong button that brought me to Stalin's Russia. In any experiment any result is the result. Even if it is negative.

3rd February 2013, 08:07 PM	#2439
mogliaa diyAudio Member Join Date: Dec 2009 Location: London	Hey Rui, it looks superb! Well done! How much work left for a first listening test? Ale __________________ "A mistake is always forgivable, rarely excusable and always unacceptable. " (Robert Fripp) http://www.bartola.co.uk/valves/

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3rd February 2013, 06:20 PM	#2432
andyjevans diyAudio Member Join Date: Sep 2003 Location: London	That's interesting. I just tried out the LL1635 in 1:1 and it's disappointing - light on bass and less detail than the LL1660. I have a LL1692 I can try

3rd February 2013, 06:29 PM	#2434
amandarae diyAudio Member Join Date: Oct 2004 Location: Diamond Bar, CA	Is it really necessary to suspend the 26 tubes from the chassis? Just want to know.

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