The Best 12AX7

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Muff Wiggler
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The Best 12AX7

Post by Muff Wiggler » Sat Mar 22, 2008 9:45 pm

I just put a new V1 tube into my amp and i'm BLOWN THE HELL AWAY

it's a NOS 1960's dutch-made Amperex Bugle Boy.

I was expecting a nice tube - and I got that, but also something i didn't expect....

with this tube, i am able to GREATLY increase the tone control on my amp. I've got a single tone control, just a treble cut. That's all this amp needs. I've tried 4 or 5 modern/reissue tubes in there, and they were all pretty samey, the reissue Tung-Sol probably being the quietest, at least.

Anyway, with all the modern tubes I tried, I can only raise the tone control to about 5, 5.5 or so (it goes to 11). Higher and I get the harsh, brittle 'ice-pick' trebles that I'm sure you all know. So I balance out that harshness with lowering the tone control, as we all probably do.

Anyway, with the Bugle Boy installed - and I found this out by accident - I can go WAY higher on the tone control without any sign of ice-pick. In fact, I can set it right to 11, and there's no harshness. But that's hard to get used to :lol: Over the past few days since I've been getting into the new sound, it's gone from 7 to 8 and now it's at 9.

The sound of the amp without such a treble cut - and no harsheness to speak of - is just incredible.. I still look at the tone knob and think "no! that's too high!", but when I use my ears, there's NO reason to set it lower

just incredible. If you get a chance, try one of these tubes out.

also cool - i have a 1950's Mullard 12ax7 in the phase inverter socket - both these two tubes do a really cool 'bright flash' for a brief moment when first powered up - sorta looks like a flashlight quickly turning on and then off inside my amp. Eric tells me this is a true sign of the real vintage article, and that tube collectors are still arguing why the tubes were built to do this during the era

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felix
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Post by felix » Sat Mar 22, 2008 10:41 pm

Awesome! Was this an ebay find or is a place to score them?
dress yourself for the public. you now must exit your home and acquire a dental mirror and lubrication!
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https://www.modulargrid.net/e/racks/view/78959
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Muff Wiggler
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Post by Muff Wiggler » Sat Mar 22, 2008 11:18 pm

I got 'em at Vacuum Tube Valley, which is where I've picked up all my tubes - so the genuine factor was never in question, but it's cool to know about the flash as a way to tell counterfeits...

i've grabbed a few back issues of VTV magazine as well, which is quite fascinating, and there's lots of great info from Eric in each issue as well

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Muff Wiggler
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Post by Muff Wiggler » Mon Mar 24, 2008 8:09 pm

made a crappy little video of the power-on flash of glowness....

https://www.muffwiggler.com/swart/glow.avi

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felix
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Post by felix » Mon Mar 24, 2008 8:18 pm

neato!
dress yourself for the public. you now must exit your home and acquire a dental mirror and lubrication!
i recommend a hat, or a helmet. if a helmet, ensure that it is both convincing and unbiased. -citizen mori
https://www.modulargrid.net/e/racks/view/78959
https://www.modulargrid.net/e/racks/view/225002
https://jimdrones.bandcamp.com

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J.w.M.
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Post by J.w.M. » Mon Mar 24, 2008 8:55 pm

Mouth-watering.

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Muff Wiggler
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Post by Muff Wiggler » Mon Mar 24, 2008 9:14 pm

it's the mullard in the phase inverter socket that REALLY lights up

the Amperex in V1 does the same sort of flash, but not nearly as bright. On it's own - it's very striking, but when the Mullard is in there, the flash of the Amperex is completely obscured by the much stronger flash of the Mullard.

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Kwote
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Post by Kwote » Mon Mar 24, 2008 11:00 pm

forget all that. i just wanna know what news radio show you were listening to in the background.
Self expression is as essential as breathing
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Muff Wiggler
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Post by Muff Wiggler » Mon Mar 24, 2008 11:03 pm

:oops: actually, haha, I was on the phone with my boss while i made that video (I guess it was a boring call?), that's him talking through my cellphone, which is wedged to my ear using my shoulder, so that I could operate the camera, and the amp's power switch :lol:

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Kwote
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Post by Kwote » Mon Mar 24, 2008 11:09 pm

Muff Wiggler wrote::oops: actually, haha, I was on the phone with my boss while i made that video (I guess it was a boring call?), that's him talking through my cellphone, which is wedged to my ear using my shoulder, so that I could operate the camera, and the amp's power switch :lol:
if he only knew.
Self expression is as essential as breathing
kwotemusic.com
my other sites

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felix
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Post by felix » Tue Mar 25, 2008 5:09 pm

"Muff....Muff...are you there?....Is that a NOS Amperex I hear flashing on in the background!?! :evil:
dress yourself for the public. you now must exit your home and acquire a dental mirror and lubrication!
i recommend a hat, or a helmet. if a helmet, ensure that it is both convincing and unbiased. -citizen mori
https://www.modulargrid.net/e/racks/view/78959
https://www.modulargrid.net/e/racks/view/225002
https://jimdrones.bandcamp.com

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