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Tube Rolling Results for Current MT (Read 3109 times)
grinnell
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Posts: 66
Re: Tube Rolling Results for Current MT
Reply #15 - 12/24/13 at 02:41:05
 
I got lucky on ebay and got them for about 30.00  
$50.00 is more like it although if labeled cunningham they could be cheaper  RCA made

Jessie brent is probably the best source for the best price i have bought a number of tubes from them
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MT w/ 1940's RCA 6v6g st
Ref 3A de Capos
VPI HW-19 mk iv
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grinnell
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Posts: 66
Re: Tube Rolling Results for Current MT
Reply #16 - 12/24/13 at 02:42:23
 
ps nice thing about the mini is you dont have to pay for matched tubes  buy them one at a time and save  lol
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MT w/ 1940's RCA 6v6g st
Ref 3A de Capos
VPI HW-19 mk iv
Mac Tuna MR-67
MH 25.2 CDP
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Fireblade
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A.L.Tennyson

Posts: 702
Re: Tube Rolling Results for Current MT
Reply #17 - 12/24/13 at 12:16:46
 
It is true that we can profit from the self-biasing feature, but I prefer to be on the safe side, as there's less chance of getting a weaker tube that way and the price difference (in relation to, in my case, customs, logistics and all) is not that significant.

Any experiences with 6414's on the driver seat?
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grinnell
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Posts: 66
Re: Tube Rolling Results for Current MT
Reply #18 - 12/24/13 at 19:07:07
 
But we dont need match tubes b/c of the dual mono feature

i scored a quad of Rayethon Blackplate 6414 for 35.00

they sound pretty good but i had some Amprex/philips 7062's that sounded very good also so not a huge difference btw them
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MT w/ 1940's RCA 6v6g st
Ref 3A de Capos
VPI HW-19 mk iv
Mac Tuna MR-67
MH 25.2 CDP
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Fireblade
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Knowledge comes, but
wisdom lingers.
A.L.Tennyson

Posts: 702
Re: Tube Rolling Results for Current MT
Reply #19 - 12/24/13 at 20:12:20
 
Well, I still think when they go about the matching process they have to discard the weaker ones which you will get in a singles purchase (weaker=more probable of early failures). Plus, replacing a tube is a logistics hazzle for me, so it is cheaper to be more on the safe side in the long run. These may still fail but at least there's that first screening on my side.

I'm hoping the 6414's are similar to the 7062's, that's why I would like to try them. I liked the Phillips SQ 7062's so much when paired with the G ST's.

The price is very good BTW. Store?

Happy holidays to all!


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« Last Edit: 12/24/13 at 20:13:48 by Fireblade »  

Laptop-Foobar2K-ASIO Direct//WD 2.0Tb HDD//Audio Gd USB cable//Audio Gd NFB 3 (2014) DAC//Decware Silver Ref IC's//Decware Mini Torii SE//Kimber Kable spkr cbls//Decware DM945's//Velodyne DLS 3500//BJC SUB Cbls//Tripp Lite 500 Isolation Trnsf.//Jellyfish Pwr Cord
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P K
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Posts: 138
Re: Tube Rolling Results for Current MT
Reply #20 - 12/24/13 at 23:29:33
 
Will Fireblade and Grinnell tell me some details about their 6V6G ST

Are they clear coated or grey coated glass.

Do the clearly say RCA on the tube?

Are the plates black or grey, smooth or ribbed.

Round Halo?

Thanks,

Peter
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Fireblade
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Knowledge comes, but
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A.L.Tennyson

Posts: 702
Re: Tube Rolling Results for Current MT
Reply #21 - 12/25/13 at 00:08:05
 
Mine are Radiotron labelled and gray glass, with a round halo getter. RCA made.
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P K
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Posts: 138
Re: Tube Rolling Results for Current MT
Reply #22 - 12/25/13 at 14:57:31
 
Does anyone know if

Match pairs for either EZ81 or EZ80 tubes matter?

Can you mix brands or does a specific brand have a distinct sound?

Do RFT EZ80 or EZ81 tubes sound better or are they just affordable?

Thanks,

Peter
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Rivieraranch
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Re: Tube Rolling Results for Current MT
Reply #23 - 12/25/13 at 17:26:45
 
You shouldn't mix brands. The RFT sounds better than the JJ's.
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Fireblade
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Knowledge comes, but
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A.L.Tennyson

Posts: 702
Re: Tube Rolling Results for Current MT
Reply #24 - 12/25/13 at 18:24:01
 
In my limited experience, RFT rectifiers are quite reliable and sound good. Either spec preference is based on complement synergies and personal assessment.

In general, same spec tube brands have their distinct sound, stemming from slightly different structural and/or manufacturing details, so unless there's a temporary emergency situation (no spares) one should stick to same specs/brands.

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P K
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Posts: 138
Re: Tube Rolling Results for Current MT
Reply #25 - 12/25/13 at 22:21:34
 
Anyone try a 6F6 output tube in the Mini Torii?
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P K
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Posts: 138
Re: Tube Rolling Results for Current MT
Reply #26 - 12/26/13 at 13:59:22
 
I am enjoying the Valve Art 350b tubes (to replace the stock Tung Sol 6V6 GT).

Others have stated that:

I have had some great results from some 40's RCA 6v6g st.  got some bass punch and nice extended range.  

I tried some Art Valve 350's, very nice sound sweet airy but light on the bass.

My Emerald Physics speakers are bi-amped and I am using the Mini Torii for the Mid/Tweeter at above 1000 hz.

I am now considering searching for 40's RCA 6v6g st., but wonder if it is worth the effort as the 350b  may sound similar (or better?) above 1000 hz.

Any comments,

Thanks,

P K
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« Last Edit: 12/26/13 at 14:00:40 by P K »  
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grinnell
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Posts: 66
Re: Tube Rolling Results for Current MT
Reply #27 - 12/26/13 at 20:48:48
 
PK,

One is labeled Radiotron the other Cunningham  both identical, grey glass, not sure about the getter (not expert enough to tell)
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MT w/ 1940's RCA 6v6g st
Ref 3A de Capos
VPI HW-19 mk iv
Mac Tuna MR-67
MH 25.2 CDP
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P K
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Posts: 138
Re: Tube Rolling Results for Current MT
Reply #28 - 01/10/14 at 19:27:44
 
FINAL RESULTS AFTER TRYING OUT A BRENT JESSE RCA 6V6G ST, COKE BOTTLE:

Valve Art 350B-coke  bottle,blows away the RCA 6V6G ST in my system (mini Torii driving a mid/tweeter at 1000 hz and above)

Amperex NOS  EZ80 from Brent Jesse (white lettering with a cartoon of a tube playing a flute)

RCA NOS Long Black Plates, Old Style White lettering, 12au7 from Brent Jesse.

This is a great combo, 3d deep sound stage, not too hot or bright, airy sound, great definition of instruments, sound stage that is wider than my speakers, balance natural sound.

Any further comments?

P K

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« Last Edit: 01/10/14 at 19:38:52 by P K »  
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marky
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Posts: 570
Re: Tube Rolling Results for Current MT
Reply #29 - 01/10/14 at 22:46:02
 
"(white lettering with a cartoon of a tube playing a flute)"
Ah, ze famous `Bugle Boy`brand.
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