Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

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MRHP
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Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Thu Aug 30, 2018 6:05 pm

I have used these in my cherry's and they are some mellow sweet sounding tubes. Great midrange.
https://www.ebay.com/itm/BRIMAR-YELLOW- ... SwS7tbdKLJ

Here is a very nice warm tube with some good air on the top end and a very low noise floor. Notice the really tall bottle and pinched waste. Probably one of the best 12AT7's out there. I use these more than any other in the Cherry's.
https://www.ebay.com/itm/Miniwatt-Dario ... OSwtc1ap69~

Also have a set of 12at7watubes made in France that have a nice open sound...kinda bright but definitely not harsh. These are labeled BugleBoy but are not made in Holland.
https://www.ebay.com/itm/ECC81-12AT7-AM ... 2024!US!-1
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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by UncleMeat » Fri Aug 31, 2018 2:29 am

I'm partial to RCA 12AT7/AX7, but I've not heard any of these you have yet, Eric. I'd like to get together with some folks and roll different tubes to get an idea of what other types sound like!

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by BarryG » Fri Aug 31, 2018 7:04 am

Are the Brimar’s the same as the 6060?

Barry
Carver C-11 (BillD modified by Dennis Miller), Carver SD/A-390t, Carver C-9, Carver M-1.0t MKII Opt. 2, Carver M-500t MKII (RichP’s final MKII before retirement), Carver TFM-45, TEAC DAC, Tube Buffer (MusicFidelity Clone), Sony Blu-Ray Player, Technics SL-7 turntable with Technics 310MC moving coil cartridge, Polk SDA1B’s (upgraded and modded by me), Carver ALS (Original upgraded), Interconnects by Doug, Speaker Wires by Doug, Salamander Archetype Equipment rack X2.

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Fri Aug 31, 2018 5:17 pm

UncleMeat wrote:
Fri Aug 31, 2018 2:29 am
I'm partial to RCA 12AT7/AX7, but I've not heard any of these you have yet, Eric. I'd like to get together with some folks and roll different tubes to get an idea of what other types sound like!
If someone actually gets a 275 running I'll have a pile of 12ax7 and 12at7's to play with. \:D/
TFM-75 serial #0001
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Baby Black Magic serial #0001
Baby Black Magic serial #0002
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Lightstar Reference
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OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Fri Aug 31, 2018 5:21 pm

BarryG wrote:
Fri Aug 31, 2018 7:04 am
Are the Brimar’s the same as the 6060?

Barry
Barry from what I know the "yellow T" Brimar's are a higher grade at7 than the 6060. Below is a quote on the ebay auction...

"These are the early Yellow-T logo that are excellent quality tubes. Rich British tube tone, made at the Brimar Footscray, U.K. factory, long life late 1960s vintage. This rare tube is the Brimar answer to the Genalex A2900. It has a similar construction to it."
TFM-75 serial #0001
PT-2400 serial #0001
Baby Black Magic serial #0001
Baby Black Magic serial #0002
Cherry/260wpc Mono Blocks
Lightstar Reference
Sunfire Series II 625x2
Carver 490t
OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Fri Aug 31, 2018 6:12 pm

The 1956 and 1957 12x7 Mullard "MC1" is about my favorite ax7 of all. I bought a couple pair before they became near extinct and out of control on price. But they have it all when it comes to soundstage, warmth, air, top end, sweet midrange, everything. They work in the Cherrys, the phono pre amp, anywhere you put them. Did I mention how awesome these tubes are??... :lol:
https://www.ebay.com/itm/Mullard-12AX7- ... SwoYxbgHZS

Here are some Siemens ECC83 dual post halo getter short plates. The can sometimes be found at a really good deal because everybody wants the long plates. I think these sound better than the long plates personally. Good all around sound and really tight deep bass.
https://www.ebay.com/itm/2-X-SIEMENS-MA ... Sw0rRbgqMV

RCA 5751 Triple Mica Black plates. These will hold their own with any 5751 out there including the Sylvania 5751 Triple Mica Black plates. They sound better in the Cherry's than the Sylvania's, but the Sylvania's sound better in the phono preamp. They are fairly neutral and lack nothing.
https://www.ebay.com/itm/2-NOS-NIB-Matc ... SwoYxbgFTB

Tesla E83CC gold pins. Made in Czechoslovakia. Be careful not to buy the fakes. The way I understand it is that these were made on the old Telefunken ECC803S tooling that was bought from Telefunken. They have the same construction. Snoop65 turnedme on to them and they sound fantastic, very open clean sound with a bigol soundstage. Snoop is the expert on these so before buying some check with him to make sure they are the right ones. I think the link below are the correct ones.

https://www.ebay.com/itm/NOS-Pair-TESLA ... 0009.m1982
TFM-75 serial #0001
PT-2400 serial #0001
Baby Black Magic serial #0001
Baby Black Magic serial #0002
Cherry/260wpc Mono Blocks
Lightstar Reference
Sunfire Series II 625x2
Carver 490t
OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by Snoop65 » Fri Aug 31, 2018 8:14 pm

Those are the right ones Eric. All other 12AX7 tubes have plate construction, the Tesla E83cc's are frame grid tubes similar to the construction of 6dj8/6922/7308 tubes. Also the Tesla E83cc's will have a halo getter with two support posts.
CARVER LIGHTSTAR REFERENCE+SUNFIRE CLASSIC TUBE PREAMPLIFIER+JBL XPL200+MUSIC HALL MMF-9.1+GRADO REFERENCE MASTER 1+Cayin CDT-17a =WOW!!!!!!

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by UncleMeat » Fri Aug 31, 2018 11:03 pm

Holy crap those are expensive pre-amp tubes! You could spend more on the pre/driver tubes than the amp!!

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by mbskeam » Sat Sep 01, 2018 6:45 am

I've tried
Mullard
JJ's
RCA
Telefunken.....

Telefunken (both tubes) seams to work the best over all for me, having depth, width, soundstage etc....
and they sound nice
Mbskeam

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Sun Sep 02, 2018 2:03 pm

mbskeam wrote:
Sat Sep 01, 2018 6:45 am
I've tried
Mullard
JJ's
RCA
Telefunken.....

Telefunken (both tubes) seams to work the best over all for me, having depth, width, soundstage etc....
and they sound nice
The Telefunkens seem to work good in almost any application. I've never put them in and thought they sounded "bad".
TFM-75 serial #0001
PT-2400 serial #0001
Baby Black Magic serial #0001
Baby Black Magic serial #0002
Cherry/260wpc Mono Blocks
Lightstar Reference
Sunfire Series II 625x2
Carver 490t
OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Sun Sep 02, 2018 2:13 pm

UncleMeat wrote:
Fri Aug 31, 2018 11:03 pm
Holy crap those are expensive pre-amp tubes! You could spend more on the pre/driver tubes than the amp!!
Yeah its kinda like the unspoken rule of buying a scope for your gun. Something to the effect of whatever you spend on the gun double the cost of the glass you put on it.

Of course I have an obsession with toobs so there's that...lol
I justify it as an "investment"....its like buying antiques and the value will continue to go up.
TFM-75 serial #0001
PT-2400 serial #0001
Baby Black Magic serial #0001
Baby Black Magic serial #0002
Cherry/260wpc Mono Blocks
Lightstar Reference
Sunfire Series II 625x2
Carver 490t
OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by MRHP » Sun Sep 02, 2018 4:48 pm

Here is the holy grail 12ax7 that the Tesla E83CC is comparable to. Tesla is made with the original tooling this Telefunken was made from.
https://www.ebay.com/itm/1-sealed-NOS-t ... 0005.m1851
TFM-75 serial #0001
PT-2400 serial #0001
Baby Black Magic serial #0001
Baby Black Magic serial #0002
Cherry/260wpc Mono Blocks
Lightstar Reference
Sunfire Series II 625x2
Carver 490t
OPPO-103
Lucas Labs CF-14
Sunfire Tube pre
DENON DP-62L TT
DUAL CS 5000 TT
DQ-20's
Tesla CF-15 speakers
Douglas Cables
OK ERIC, LET GO OF THE MOUSE AND BACK AWAY FROM YOUR PC WITH YOUR HANDS IN THE AIR. NOW SLOWLY LAY FACE DOWN ON THE FLOOR!!!! - Snoop65

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by Snoop65 » Sun Sep 02, 2018 5:55 pm

MRHP wrote:
Sun Sep 02, 2018 4:48 pm
Here is the holy grail 12ax7 that the Tesla E83CC is comparable to. Tesla is made with the original tooling this Telefunken was made from.
https://www.ebay.com/itm/1-sealed-NOS-t ... 0005.m1851
It's actually identical :D
CARVER LIGHTSTAR REFERENCE+SUNFIRE CLASSIC TUBE PREAMPLIFIER+JBL XPL200+MUSIC HALL MMF-9.1+GRADO REFERENCE MASTER 1+Cayin CDT-17a =WOW!!!!!!

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Re: Carver 275...12ax7 and 12at7's....its time to talk tube rolling for the 275

Post by Magnaryder » Tue Sep 04, 2018 9:15 pm

Look at 2nd hand stores for old tube stereos. I found a Grundig unit with a complete set of 1963/4 Telefunken tubes for $25. They’re still around and my set tested strong. The EL84s sound really good in the 2011 amp.

There are some new construction tubes that are very good. I run PSVane 12ax7s in my EAR. They replace the Mullard/EI/Telefunken tubes that came with it and sound better to me and the PO. I’m using some of the Telly’s and EIs in other gear spreading that luscious tubey goodness around.

IIRC, EI was producing tubes on the old Telly gear in the 70s and early 80s before ethnic cleansing. They made some great tubes. My understanding now is the equipment is currently stored somewhere in the old Czech Republic.

ray
Magnaryder

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