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6 x 12AX7 in my Sunfire Pre

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mbskeam

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Post Thu Jan 09, 2014 10:46 pm

Re: 6 x 12AX7 in my Sunfire Pre

Mbskeam


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BrianT

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Post Fri Jan 10, 2014 6:45 pm

Re: 6 x 12AX7 in my Sunfire Pre

Magnaryder wrote:hey Brian, how 'bout some good pics of the modded phono board?

ray


As requested, the mod only effects the MC side, if running MM it make no difference.

Brian
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VPI Classic Turntable (blk)
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Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
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Magnaryder

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Post Fri Jan 10, 2014 10:01 pm

Re: 6 x 12AX7 in my Sunfire Pre

Thanks Brian. Those extra tubes look like they're running from 6DJ8 sockets. Are they 12ax7s?

ray
Magnaryder

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BrianT

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Post Sat Jan 11, 2014 8:13 am

Re: 6 x 12AX7 in my Sunfire Pre

Magnaryder wrote:Thanks Brian. Those extra tubes look like they're running from 6DJ8 sockets. Are they 12ax7s?

ray


Ray.

You are correct, they are pigged backed to 6922 sockets, and they are 6922 tubes.
The phono board has a total of 8 tubes, 6 x 6922 & 2 x 12AX7 broken down like this.
5 x 6922 in the MC section. 2 X 12AX7 & 1 x 6922 in the MM section. So with a MC cart
all 8 tubes are used, with a MM cart 3 tubes are used 2 x 12 AX7 & 1 x 6922 .

Brian
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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MRHP

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Post Wed Jan 15, 2014 2:03 pm

Re: 6 x 12AX7 in my Sunfire Pre

Brian, what is the benifit of the extra tubes?......less noise?
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BrianT

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Post Wed Jan 15, 2014 5:31 pm

Re: 6 x 12AX7 in my Sunfire Pre

MRHP wrote:Brian, what is the benifit of the extra tubes?......less noise?


Correct, you get the cookie

According to Bob, they lower the noise floor by 10db from a s/n 76db to s/n 86db
thats better than a lot of solid state MM sections.

Brian
Last edited by BrianT on Thu Jan 16, 2014 6:59 am, edited 1 time in total.
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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Snoop65

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Post Wed Jan 15, 2014 6:57 pm

Re: 6 x 12AX7 in my Sunfire Pre

BrianT wrote:
MRHP wrote:Brian, what is the benifit of the extra tubes?......less noise?


Correct, you get the cookie

Brian

Lol!!!! How come I never get a cookie? :D
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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BrianT

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Post Thu Jan 16, 2014 7:04 am

Re: 6 x 12AX7 in my Sunfire Pre

Snoop65 wrote:
BrianT wrote:
MRHP wrote:Brian, what is the benifit of the extra tubes?......less noise?


Correct, you get the cookie

Brian

Lol!!!! How come I never get a cookie? :D


Vance

Why would you want a cookie, when I offered you a Shelter 901 a week ago
and you declined :rolleyes:

Brian
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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Snoop65

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Post Thu Jan 16, 2014 8:56 am

Re: 6 x 12AX7 in my Sunfire Pre

I really appreciate the offer Brian but the 901 is too pricey and I like cookies! :D
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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Chauss

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Post Thu Jan 16, 2014 9:35 am

Re: 6 x 12AX7 in my Sunfire Pre

Image
Good sound—like good music, good wine and good fellowship—is meant to be shared.
"The difference between genius and stupidity is that genius has its limits" Albert Einstein
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BrianT

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Post Thu Jan 16, 2014 6:09 pm

Re: 6 x 12AX7 in my Sunfire Pre

Snoop65 wrote: I like cookies! :D


OK Vance,

I like cookies as well, my favourite the monument are the white chocolate chip that Costco sells.

So why don't you go pick a box up, let me know the cost and I will PayPal you the amount.

Or you could come to CF14 and we can both share a couple of boxes of them \:D/ \:D/ \:D/ \:D/

Brian
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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BrianT

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Pair of Silver Sevens

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Joined: Sat Oct 11, 2008 4:51 pm

Location: Ottawa, Canada

Post Thu Jan 16, 2014 6:10 pm

Re: 6 x 12AX7 in my Sunfire Pre



Dan

That looks real nice, but what a crazy price.

Brian
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
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Snoop65

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Post Thu Jan 16, 2014 11:13 pm

Re: 6 x 12AX7 in my Sunfire Pre

BrianT wrote:
Snoop65 wrote: I like cookies! :D


OK Vance,

I like cookies as well, my favourite the monument are the white chocolate chip that Costco sells.

So why don't you go pick a box up, let me know the cost and I will PayPal you the amount.

Or you could come to CF14 and we can both share a couple of boxes of them \:D/ \:D/ \:D/ \:D/

Brian

You're my friend , I have no problem sending you cookies and i'll see if I can traumatize you by hanging out with at CF2014. :lol: :D
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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BrianT

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Post Fri Jan 17, 2014 5:50 pm

Re: 6 x 12AX7 in my Sunfire Pre

Snoop65 wrote: i'll see if I can traumatize you by hanging out with at CF2014. :lol: :D


That sounds like a real good plan =D>

You will find me at cabin 11

Brian
VPI Classic Turntable (blk)
Transfiguration Phoenix Cartridge
Sunfire Vacuum Tube Control Centre. C/W Mod'ed Phono Stage
Carver Silver 7's Tube Amps
Raysonic CD-168 CDP (silver)
Carver TX11.
B&W 802D's Rosenut
<<

Chauss

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Post Fri Jan 17, 2014 7:15 pm

Re: 6 x 12AX7 in my Sunfire Pre

I will bring the heiney's Brian! :D
To be consumed first....save the cookie for last-
Image
Good sound—like good music, good wine and good fellowship—is meant to be shared.
"The difference between genius and stupidity is that genius has its limits" Albert Einstein
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