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Carverfest Amp Tube Supernova

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Martin1970

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Post Tue Jan 31, 2012 12:29 pm

Carverfest Amp Tube Supernova

So, these are the Sovtek eBay tubes Bob suggested.

supernova.jpg



These had been running hard earlier, the temp at that time was 360 degrees.
They were turned down when this happened.

They were still playing and sounded fine.

What caused this?

Is it dead?

Found this: http://en.wikipedia.org/wiki/Glowing_plate

from that, overcurrent

Wonder if overvoltage failure is same deal since these things are operating outside of their range.
Last edited by Martin1970 on Tue Jan 31, 2012 12:59 pm, edited 1 time in total.
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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TNRabbit

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Post Tue Jan 31, 2012 12:57 pm

Re: Carverfest Amp Tube Supernova

Shitty build quality~
TNRabbit
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From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
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Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
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Snoop65

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Post Tue Jan 31, 2012 12:59 pm

Re: Carverfest Amp Tube Supernova

That is not good. I would replace that tube and possibly not run the amp until you figure out if the tube just failed or there is a issue with the amp. Tubes going supernova can damage other components or speakers.
CARVER LIGHTSTAR REFERENCE+SUNFIRE CLASSIC TUBE PREAMPLIFIER+JBL XPL200+MUSIC HALL MMF-9.1+GRADO REFERENCE MASTER 1+CARVER SD/A 390t=WOW!!!!!!
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Martin1970

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Post Tue Jan 31, 2012 1:01 pm

Re: Carverfest Amp Tube Supernova

TNRabbit wrote:Shitty build quality~


Of course!
That's what I get from copying the rabbit :rolleyes:
Last edited by Martin1970 on Tue Jan 31, 2012 2:54 pm, edited 1 time in total.
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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Martin1970

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Post Tue Jan 31, 2012 1:02 pm

Re: Carverfest Amp Tube Supernova

Snoop65 wrote:That is not good. I would replace that tube and possibly not run the amp until you figure out if the tube just failed or there is a issue with the amp. Tubes going supernova can damage other components or speakers.


It was part of a matched quad....doh!
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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kingman

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Post Tue Jan 31, 2012 1:04 pm

Re: Carverfest Amp Tube Supernova

Kinda looks like Mike's amp with the LEDs , but only on 1 tube....kinda..... :-"
In reality, it only matters what it sounds like to YOU!!!
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Martin1970

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Post Tue Jan 31, 2012 2:50 pm

Re: Carverfest Amp Tube Supernova

](*,)
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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TNRabbit

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Post Tue Jan 31, 2012 3:02 pm

Re: Carverfest Amp Tube Supernova

It doesn't look good...

that sucker is NUCLEAR!

TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
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elgrau

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Post Tue Jan 31, 2012 3:39 pm

Re: Carverfest Amp Tube Supernova

That's called "tube orgasm syndrome". Stop playing so much sexy female vocalist type music and it will subside.....and then the tube will simply go to sleep!



^ add: above video.....LMAO!
Last edited by elgrau on Tue Jan 31, 2012 3:43 pm, edited 1 time in total.
Family room: 400 disk changer with PS Audio Digital Link III DAC; Technics SL-1100A TT. QED Quenx1 IC's from DAC & TT to Adcom GTP-602 preamp/Tuner. AudioQuest King Cobra IC's from preamp to M1.0t mk-II opt2. QED Silver Spirals 4M wires to EPI 1000’s.
Living room: AudioQuest Black Mamba 8M IC's from family room preamp to Barcus-Berry 2002R Sonic Maximizer to GlowPower Zyxt IC's to Sunfire 300x2 to Nordost 6M bi-source wires to AOS 28" MDF spherical speakers using six 8" woofers and eight 1" dome tweeters symm. arranged around the surface.
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Martin1970

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Post Tue Jan 31, 2012 3:41 pm

Re: Carverfest Amp Tube Supernova

I love you guys.

EDIT begging: But really, what's wrong with my poor amp?

EDIT: I think I finally found my avatar
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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TNRabbit

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Post Tue Jan 31, 2012 3:59 pm

Re: Carverfest Amp Tube Supernova

I have no idea what to tell you, Martin; hence, the silly replies. I'd guess bad tube. It happens. Not like they were $50 each....

tinpan has the same tubes....better keep an eye on them, Robin!
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
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mbskeam

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Post Tue Jan 31, 2012 4:01 pm

Re: Carverfest Amp Tube Supernova

I really think the issue is the voltage, it's at the very top edge of the spec, and outside of some tubes by about 100V...
the only tru way would be to drop the voltage into a zone that would allow you to roll other tubes.
as you know if you do this, a few resistors will have to be changed
and a diffrent transformer. will it change the sound. I dont know.....

on the web sites schematics it shows a lower voltage, not the 420v or so that you have to start out with....
Mbskeam


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Don

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Post Tue Jan 31, 2012 4:03 pm

Re: Carverfest Amp Tube Supernova

Martin,

I have the Mullards in mine per Dan's recommendation. So far, no problem with the tubes.
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TNRabbit

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Post Tue Jan 31, 2012 4:11 pm

Re: Carverfest Amp Tube Supernova

mbskeam wrote:I really think the issue is the voltage, it's at the very top edge of the spec, and outside of some tubes by about 100V...
the only tru way would be to drop the voltage into a zone that would allow you to roll other tubes.
as you know if you do this, a few resistors will have to be changed
and a diffrent transformer. will it change the sound. I dont know.....

on the web sites schematics it shows a lower voltage, not the 420v or so that you have to start out with....


I have 470 volts on my tube circuit.... :shock:
TNRabbit
Image

From FrankieD's lips to your ears: Sunfire - a quiet box of endless power.

Sunfire TG-IV/400~7 Amp
Carver SD/A-360 CDP
Benchmark DAC-1
Sony SACD/DVD-A
Active bi-amp: Ashly XR-1001 & 2 Rane PEQ-15s
Main: HotRodded AL-IIIs
Sub: Klipsch RT-12d
Center: Sunfire CRS-3c
Surround: Sunfire CRS-3 (x 2)

OconeeOrange wrote:"Gary likes to play it 'loud' as do I. His system begs you turn it up until you die"

RIP WIlliam B. Dibble, 1948-2012. I'll miss you my friend.
<<

Martin1970

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Post Tue Jan 31, 2012 4:13 pm

Re: Carverfest Amp Tube Supernova

OK, so now the plan is to find a couple of quads of 500+ volt rated EL84s.

I'll look into the Mullards.

Maybe the Yen Audio guys have an idea, too.
Carver: ALS plat upgrades, TX-11a, C-9, C-1
Sunfire: Cinema Grand Sig 400 Seven x2
Rane: RPM88 26Z x3
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