Schiit Lyr Tube Rollers
Sep 4, 2017 at 11:31 AM Post #13,697 of 23,494
Also tk. Those heater currents vary just from a 6dj8 to 7308 to E188CC. Even the PCC88 has a different heater current. I think 300 to 350 is the norm for heater current in 6922 and 5670.

Yes. This.

TK16, If you want to think in terms of power difference, W=VA, so 300mA vs 350mA is 1.89W vs 2.20W.
Also, you will find different datasheets giving different heater current for these tubes.
Here are RadioMuseum.org pages for 2C51, 396A, 6N3P-E, and 6DJ8 showing 350mA, 350mA, 350mA, and 365mA:
http://www.radiomuseum.org//tubes/tube_2c51.html
http://www.radiomuseum.org/tubes/tube_396a.html
http://www.radiomuseum.org/tubes/tube_6n3p-e.html
http://www.radiomuseum.org/tubes/tube_6dj8.html

And the 2C51 predated the 6DJ8, mid 40s vs late 50s.
And the 6C8G predated the 2C51. 6C8G being the 300mA version of the 6F8G, which was the precursor to the 6SN7.
http://www.radiomuseum.org/tubes/tube_6c8g.html

My current favorites in the ~300mA category are: KEN RAD 6C8G, RFL 6N3P-E, and WE 396A, in that order.
All with very different physical design/construction, interchangeable, never any issues in the different amps I have.


 
Sep 4, 2017 at 1:05 PM Post #13,699 of 23,494
I've also upgraded the caps in the nm24 to theta.
The 2nd pair or I should say actual pair of TS are much more stiff in sound.. must've been newer. A little more clinical than the mongrel pair. Does have me wanting to check out the rcas. that pair is very spacious and clear with a beautifully natural tone.
 
Sep 4, 2017 at 2:30 PM Post #13,700 of 23,494
I am running Tung-Sol 2C51 on my Lite DAC right now. Only one problem. Tubes with adapters are too high, I can't use DAC cover any more.
20170904_130510.jpg
 
Sep 4, 2017 at 3:48 PM Post #13,703 of 23,494
Ha,ha,ha. I hope the quality of sound from that tubes will push my do that mod! After 2hr I start them like more and more.:smile_phones:
 
Sep 4, 2017 at 4:37 PM Post #13,705 of 23,494
Here is a mini adapter, maybe you could squeeze them in with it, about 1 cm

http://www.ebay.com/itm/201791700510
Think that might work there, can never have enough adapters with the long shipping. Think that roughly makes it long bottle 6922 size which should fit, if not me breaks the tip off the flute, air cannot hurt a vacuum tube anyways!!:ksc75smile:
 
Sep 4, 2017 at 9:29 PM Post #13,706 of 23,494
tl;dr for @billerb1 : send me your TS and Bendix. Keep your Heerlen pinched-waists and Tele E188CCs.


All right, you Tung-Sol freaks got me off my lazy a$$ to finally try a random pair from my five 2C51/396As I bought a while back for $63.... :D Oh, three months ago to the day. It's Labor Day here in the States, so I figured I'd better do a little. I chose this pair based on that most time-tested and time-honored of methods: which two had the best print... :D OK, no more ellipses...

I'll be jiggered, but after less than two hours these bad boys have my well-burned-in 1949 WE 396As crying UNCLE!, esp., as has been noted, in the bass department. But the overall sound is really nicely balanced. Speaking of balanced, don't test a new pair of tubes with Steely Dan's "Bodhisattva". I was worried the left channel tube was really weak, but it's the mix with the heavy guitar in the right. Fortunately, I have a known left-channel-dominant live tune to turn to, and all is well. So yeah, this pair of Tung-Sols is right up there. IIRC, my other pair of WEs are a bit beefier than the Forty-Niners, so that might make for a nice comparison. And now I'm really curious about the still untested "pair" with the slightly worse printing, and the fifth wheel that has none. Need a damn tester... dammit. Ooops... ellipses.

:beerchug:
 
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Sep 4, 2017 at 11:23 PM Post #13,707 of 23,494
I pulled the TS this am. Put in the GE5s. After a 2hr simmer they got another test drive. Reminds me of an infamous comment I made when I got my first Heerlen tubes. The nyuk nyuks. Bass is just monstrous with this pair. Holographic as all get out. I put in some old Serge Gainsbourgh because of its channel separation. Was not disappointed at all. Fantastic out of head sound. Im in the band pit yo. Put in some little Axe,(big bassy blues) and it is jaw dropping. Overall still prefer the space of the others but this tube is a stooge fa Shaw.
 
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Sep 5, 2017 at 12:58 AM Post #13,709 of 23,494
The GE's are a rocker tube to me, on my gear I guess. Could be they are stronger than my other tubes. They do glow brighter. A much more forward presentation than TS or WE in my set up. I would call on the vets here to lemme know something that is laid back and diffuse in presentation. I tend to enjoy to view the storm from a distance.
 
Sep 5, 2017 at 1:01 AM Post #13,710 of 23,494
Fine, fine, GE 5 *s are next. What's a Rangy 'sposed to do!

God bless the Glass Menagerie :)
I'd bet one of the guys has a spare pair. For a prophet, not a profit. At least to try out.
 

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