Tube Rolling w/Crack

Dr. Toobz · 750706

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Offline JamieMcC

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Reply #795 on: May 04, 2014, 07:56:22 AM
Quote from: Mak33 on May 03, 2014, 06:08:00 PM
Can anyone recommend a decent input tube to go along with a Tung Sol 6080 or RCA 6AS7G?

I have a couple of 12AU7 clear tops, but the treble is too harsh for my ears.  The clear tops are also harsh with the Tung Sol 6080 I received with the kit, but better than than with the RCA 6AS7G.

Thanks in advance.

As an alternative and if you have the speedball fitted the E80cc would be a good choice. After rolling lots of 12au7 the E80cc it is my go to tube now.

Shoot for the moon if you miss you will still be amongst the stars!

Offline Joshewah

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Reply #796 on: May 04, 2014, 12:57:18 PM
Didn't you need to change the voltage going to the driver tube to accommodate the E80CC though?


Offline JamieMcC

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Reply #797 on: May 04, 2014, 01:07:23 PM
No you don't need to but if you do it does help get the best from the tube.

Shoot for the moon if you miss you will still be amongst the stars!

Offline serpent68

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Reply #798 on: May 04, 2014, 01:32:10 PM
Anyone with knowledge on the Telefunken E80CC?  Saw it on ebay, but it looks structurally similar to a Tungsram (which is an excellent tube).

http://www.ebay.com/itm/261454459992?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT


Offline JamieMcC

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Reply #799 on: May 04, 2014, 02:05:09 PM
Quote from: serpent68 on May 04, 2014, 01:32:10 PM
Anyone with knowledge on the Telefunken E80CC?  Saw it on ebay, but it looks structurally similar to a Tungsram (which is an excellent tube).

http://www.ebay.com/itm/261454459992?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I have not tried the Telefunken but have had several tubes from the same seller

Shoot for the moon if you miss you will still be amongst the stars!

Offline serpent68

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Reply #800 on: May 05, 2014, 04:26:40 AM
Not much is written about the E80CC tubes.  There are a few brands out there - Philips, Tungsram, Siemens, Telefunken.  But from the pics, I see only 2 different types structurally - Philips (with gold pins) and Tungsram (with silvery pins).  Anyone with knowledge of the E80CC can shed some light on this?


Offline Hornet900

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Reply #801 on: May 05, 2014, 04:33:56 AM
please say there's a difference  ;D
I just bought 2 x Telefunken  E80CC a few days ago and could got  tungsram much cheaper  :-[ 
I just searched google min ago and someone on a forum says  no difference with alot of these tubes

Austin

Offline serpent68

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Reply #802 on: May 05, 2014, 04:46:49 AM
Yeah, I was tempted to buy the Telefunken E80CC, but it looks very similar to the Tungsram, that's why I'm asking.

Philips, Amperex, some Siemens look similar (with gold pins)
Tungsram, Telefunken, some Siemens look similar (with silver pins)

Someone on ebay posted a pair of Valvo E80CC from Hamburg plant, pinched waist... for a very nice price of $395.


Offline Hornet900

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Reply #803 on: May 05, 2014, 04:59:18 AM
Yeah you  really have to do your research don't you  ;)   ...Same what I read serpent. and  $385 !
Jamie saved me once on buying a load of dodgy 5998 tubes  ;)

Austin

Offline JamieMcC

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Reply #804 on: May 05, 2014, 05:00:36 AM
There is a some info on the different E80CC from what I have read the Tungsrams/Siemens with the nickel/steel pins are meant to be a touch more neautral and linear and the gold pin Philips/Valvo are said to be more coloured. I have only used the Tungsrams & Siemens E80cc but that seams to match what I am hearing.

Shoot for the moon if you miss you will still be amongst the stars!

Offline Hornet900

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Reply #805 on: May 05, 2014, 05:10:10 AM
« Last Edit: May 05, 2014, 05:11:56 AM by Hornet900 »

Austin

Offline JamieMcC

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Reply #806 on: May 05, 2014, 06:06:22 AM
Are those the ones from the 0 feed back ebay guy they look to be in great condition? Just listening to mine at the mo with a cuppa my reward for mowing the lawn (jungle) for first time this year.
« Last Edit: May 05, 2014, 06:08:30 AM by JamieMcC »

Shoot for the moon if you miss you will still be amongst the stars!

Offline Hornet900

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Reply #807 on: May 05, 2014, 06:19:17 AM
Yes they are Jamie  :) Thanks.  Will have another chatham 5998 Wednesday and thats me finished with the 5998 ................I'd  liked to try the GEC tube next.
The relisted ones the guy re added on ebay have just sold for $100  2 tubes.


he who dares rodney ...he who dares  ;D
« Last Edit: May 05, 2014, 06:49:40 AM by Hornet900 »

Austin

Offline serpent68

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Reply #808 on: May 05, 2014, 03:31:00 PM
I can't see anything wrong with the 5998 tubes in Hornet's pics.  Is there something that I should be looking out for?

The next tube I really want to try is also the GEC A1834.  Somehow, the prices on these are way too high.  I wonder if the GEC 6080WA is a close enough compromise.  Jamie speaks highly of the Mullard 6080, is that the same tube as the GEC6080?


Offline jboehle

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Reply #809 on: May 05, 2014, 03:35:11 PM
I got a Chatham 2399 from vacuumtubes.net.  Unfortunately it is extremely microphonic, I guess I will be sending it back.  From reading online it seems this is common with the ones from vacuumtubes.net, I guess I should've done some more research before ordering.  It really sucks that the 5998 is so expensive on eBay.

I got a standard RCA 6080 with my kit, and I picked up a Chatham 6080WA on eBay for cheap.  So far I like the Chatham 6080WA better.  The bass seems a little more controlled with it.

Right now I just have a stock Crack.


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