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12AU7/E80CC work that requires more heater current (Read 3713 times)
P K
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12AU7/E80CC work that requires more heater current
05/26/14 at 17:51:38
 
It's very similar to 12au7, but is 1/2 taller and required more heater current, so please make sure that you check with you manufacturer before using the tubes.

Will this tube work in a Mini Torii

Thanks,

Peter

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« Last Edit: 05/26/14 at 18:06:23 by P K »  
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P K
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Re: 12AU7/E80CC work that requires more heater current
Reply #1 - 05/28/14 at 01:34:56
 
Steve D. gives a thumb up!!!!
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hifitubes
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Re: 12AU7/E80CC work that requires more heater current
Reply #2 - 05/28/14 at 11:43:23
 
e80cc-BW by JonCatuccio, on Flickr
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #3 - 01/24/15 at 07:23:18
 
Hifitubes and PK,

I'm currently considering a pair of Tungsram E80CC's for my Mini Torii's driver position, based on other people's reviews. Could you guys forward your final impression on these? Thanks!
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« Last Edit: 01/24/15 at 07:25:44 by Fireblade »  

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P K
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Re: 12AU7/E80CC work that requires more heater current
Reply #4 - 01/24/15 at 21:33:01
 
I went to a  NOS Amperex 7316 (a 12au7 equivalent) and  I am very happy.
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« Last Edit: 01/24/15 at 21:34:41 by P K »  
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #5 - 01/27/15 at 12:05:49
 
Yes, thank you. I thought you had said 12Ax7 earlier ...  I guess you rectified that?

In any case, this fits exactly with my expected comfort zone for the driver specs in the Mini, right inside that squared area between the 12Au7 and the 6414 and others ...

My best experience with the SQ 7062 really nails it for me. Unfortunately, I lost one of mine and Jessee did not have another but a regular 7062, which is not the same, so I have been back to my RCA black plate 12Au7's.

I can get Tungsram E80CC's and there are good reviews around, but I wanted to check base with Decware users before committing.

What could you say about them in your system?  Differences with the 7316? Thanks!
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« Last Edit: 01/27/15 at 12:08:31 by Fireblade »  

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P K
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Re: 12AU7/E80CC work that requires more heater current
Reply #6 - 01/28/15 at 03:54:52
 
I tried a lot of tubes before I settled on the 7316.

Brent Jessee agreed with my selection and thought the NOS Amperex stood out from other 12au7,s or equivalents.
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #7 - 01/28/15 at 12:32:09
 
I see. Well, a little on the expensive side for a driver tube, but if the performance is that good, it may be worth it.

Are you using it with your preferred Mazda 6V6 GT? Would it be a matter of synergies you think? In which case the replacement should include the Mazdas also.

Thanks for the feedback!
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seikosha
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Re: 12AU7/E80CC work that requires more heater current
Reply #8 - 01/28/15 at 16:57:08
 
Fireblade,

Something you should consider is that PK only runs his Mini Torii from 1k up in a biamped system (uses a Sunfire below that) so anything he says about tubes doesn't take into account what they sound like below 1k.  A tube with great upper midrange and treble but bad bass and lower midrange could sound fantastic in his system, but not very good in others.

PK, please correct me if I'm wrong andyou are now running your MT full range.
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P K
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Re: 12AU7/E80CC work that requires more heater current
Reply #9 - 01/29/15 at 01:43:03
 
You are correct about my bi-amp system.

By the way, I have replaced the Sunfire amp in my system.

Peter
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« Last Edit: 01/29/15 at 01:51:57 by P K »  
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P K
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Re: 12AU7/E80CC work that requires more heater current
Reply #10 - 01/29/15 at 01:47:50
 
I am also using the Mazda 6v6 GT.

Please also talk to Brent Jessee about these tubes.

Peter
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #11 - 01/29/15 at 03:51:50
 
Got it, guys. Thanks for the heads up. I'll try to contact Jessee. With my new Tektons getting here on Saturday, I need to find the new best tube setup (its part of the fun!)
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #12 - 02/06/15 at 12:18:35
 
This is what Brent Jessee suggested:

Drivers:

1. 5965 Telefunken diamond mark, $200.00/pair

2. 6211 Telefunken diamond mark, $180/pair

3. E180CC Amperex pinch waist.  Superb sonics, slightly warm.  $250.00/pair

6V6's:

1. 6V6GT RCA grey glass $109.00/pair

2. VT107A military 6V6GT RCA made $130.00/pair

3. 5992 Bendix Aviation aircraft grade 6V6GT military type $399.00/pair

Mmmmhhhh  ...   tempting, but too expensive choices
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« Last Edit: 02/06/15 at 12:19:59 by Fireblade »  

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Rivieraranch
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Re: 12AU7/E80CC work that requires more heater current
Reply #13 - 02/07/15 at 16:05:49
 
You say "driver." Isn't it input or preamp?
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Fireblade
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A.L.Tennyson

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Re: 12AU7/E80CC work that requires more heater current
Reply #14 - 02/07/15 at 18:13:43
 
They also drive the output tubes ... don't they?

BTW, switched back to the old Brimar 12AT7's, as these have better synergy with the Tekton Lore 2.0's, believe it or not! Seems as if the DM945's would yield to the beaming energy of the peppy Brimars. Tektons seem to absorb that energy seamlessly ... OTOH, the RCA 12Au7 black plates work better with the DM945's, as those are much more laid back.
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« Last Edit: 02/07/15 at 18:23:02 by Fireblade »  

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