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Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 443

post #6631 of 10586

Guys, sorry to back track here...anyone can recommend an affordable 6SN7 tube that is warm and sweet sounding (traditional tubey sound)? Am looking for some to use in my Mk 3 for vocal tunes..after aggressive music all this while, need some slow down and warm, syrupy sweet signatures : ) Thanks in advance! Will be pairing with EF95 type driver tubes if this is of help..

post #6632 of 10586

Supposedly the RCA red base 5692 have the sweetest sound of all the 6sn7's. Speaking of 6sn7's mine are causing major distortion again at higher volumes which I am unsure why =/ hopefully the 6f8g tung-sol's or NU 7n7's fix this problem as I will be using different adapters and I think that is what is causing the problems with my 6sn7's.

post #6633 of 10586
Quote:
Originally Posted by sgbwill2 View Post
 

Supposedly the RCA red base 5692 have the sweetest sound of all the 6sn7's. Speaking of 6sn7's mine are causing major distortion again at higher volumes which I am unsure why =/ hopefully the 6f8g tung-sol's or NU 7n7's fix this problem as I will be using different adapters and I think that is what is causing the problems with my 6sn7's.

Are the RCAs expensive? For your other tubes, are you using an external PS as well?

post #6634 of 10586

Yes unfortunately they are very expensive. For the 6sn7's no I am not using external power supplies as there is no need as they are only have a 0.6 draw up.

post #6635 of 10586
Quote:
Originally Posted by sgbwill2 View Post
 

Yes unfortunately they are very expensive. For the 6sn7's no I am not using external power supplies as there is no need as they are only have a 0.6 draw up.

Sorry I meant the 6f8g / 7n7..

post #6636 of 10586
Quote:
Originally Posted by Rossliew View Post
 

Guys, sorry to back track here...anyone can recommend an affordable 6SN7 tube that is warm and sweet sounding (traditional tubey sound)? Am looking for some to use in my Mk 3 for vocal tunes..after aggressive music all this while, need some slow down and warm, syrupy sweet signatures : ) Thanks in advance! Will be pairing with EF95 type driver tubes if this is of help..

 

It appears that you will be using 6SN7's as power tubes, so an external heater power supply is not necessary. I don't have the RCA red base 5692, so can't comment on it personally. And given that they don't get a whole lot of love in the 6SN7 forum and they are not exactly cheap, they are not even on my radar screen. lol

 

But for sure, RCA tubes in general tend to be warm and sweet, so I would start cheap. Mordy has reported very favorably on the sound of his 6SN7GTB's and they are very affordable. I have a couple pairs of 1940's gray glass 6SN7GT / VT-231 and they are wonderful tubes. The National Union's, both gray and black glass versions, are also quite sweet. And another wonderful tube, but often a bit more pricey, is the 1940's Ken-Rad 6SN7GT / VT-231. Any of these would be well worth trying, IMO.

post #6637 of 10586
Quote:
Originally Posted by Rossliew View Post
 

Sorry I meant the 6f8g / 7n7..

 

Like the 6SN7, these tubes draw .6A, However, each requires a different adapter.

post #6638 of 10586
Quote:
Originally Posted by gibosi View Post
 

 

It appears that you will be using 6SN7's as power tubes, so an external heater power supply is not necessary. I don't have the RCA red base 5692, so can't comment on it personally. And given that they don't get a whole lot of love in the 6SN7 forum and they are not exactly cheap, they are not even on my radar screen. lol

 

But for sure, RCA tubes in general tend to be warm and sweet, so I would start cheap. Mordy has reported very favorably on the sound of his 6SN7GTB's and they are very affordable. I have a couple pairs of 1940's gray glass 6SN7GT / VT-231 and they are wonderful tubes. The National Union's, both gray and black glass versions, are also quite sweet. And another wonderful tube, but often a bit more pricey, is the 1940's Ken-Rad 6SN7GT / VT-231. Any of these would be well worth trying, IMO.

Thank you, thank you! Yes, the 5692 cost a bomb on eBay and I don't believe its worthwhile at that price. I shall check out the tubes you mentioned then. 

post #6639 of 10586
Quote:
Originally Posted by sgbwill2 View Post
 

Supposedly the RCA red base 5692 have the sweetest sound of all the 6sn7's. Speaking of 6sn7's mine are causing major distortion again at higher volumes which I am unsure why =/ hopefully the 6f8g tung-sol's or NU 7n7's fix this problem as I will be using different adapters and I think that is what is causing the problems with my 6sn7's.

Can you share pictures of your 6f8g and 7n7 adaptors for the Little Dot? thanks

post #6640 of 10586

When I receive them sure. I bought them off ebay though and the listings are here:

 

http://www.ebay.co.uk/itm/1pc-6F8G-TO-6CG7-6FQ7-tube-adapter-CNC-Copper-body-/191197575305?pt=US_Home_Audio_Amplifiers_Preamps&hash=item2c84437889

 

http://www.ebay.co.uk/itm/1pc-7N7-7F7-TO-12AU7-12AX7-tube-adapter-for-you-amp-6-3V-Heat-/201102573014?pt=UK_Sound_Vision_Amplifier_Parts&hash=item2ed2a5bdd6

post #6641 of 10586

Will these do? I already have the 6SN7 Adaptor so i figure I can just add these 6f8g adaptors on top..

 

http://www.ebay.com/itm/300980566435?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

 

The following is what I have for using 6SN7 tubes :

 

http://www.ebay.com/itm/2-x-convert-tube-socket-6CG7-to-6SN7/221065459067?_trksid=p3984.c100023.m2049&_trkparms=aid%3D333008%26algo%3DRIC.MBE%26ao%3D1%26asc%3D22943%26meid%3D7824974462340279553%26pid%3D100023%26prg%3D9893%26rkt%3D4%26

 

 

So, can i just get the "6f8g to 6sn7" adaptor and plug it on top of the "6cg7 to 6sn7" adaptor?


Edited by Rossliew - 6/23/14 at 9:12am
post #6642 of 10586

The 5692 red is a nice tube but certainly not the best, the problem with them is the price after the Sound Practice article. We are blessed with many excellent 6SN7s however a few are now getting pricey (Tung Sol, the Swedish one, early Sylvania Ws, the red 5692s) however there are still some bargains to be had for not silly money, early Ken Rads, Natuional Unions, CBS Hytron 5692, most ww11 ones (vt 231). I am a big fan of the 50 and 60s 6SN7WGTs and european examples. Still loads of NOS goodies out their unlike some tubes and I haven't even got around to checking out the Russian ones!.

post #6643 of 10586
Quote:
Originally Posted by Rossliew View Post
 

Will these do? I already have the 6SN7 Adaptor so i figure I can just add these 6f8g adaptors on top..

 

http://www.ebay.com/itm/300980566435?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

 

The following is what I have for using 6SN7 tubes :

 

http://www.ebay.com/itm/2-x-convert-tube-socket-6CG7-to-6SN7/221065459067?_trksid=p3984.c100023.m2049&_trkparms=aid%3D333008%26algo%3DRIC.MBE%26ao%3D1%26asc%3D22943%26meid%3D7824974462340279553%26pid%3D100023%26prg%3D9893%26rkt%3D4%26

 

 

So, can i just get the "6f8g to 6sn7" adaptor and plug it on top of the "6cg7 to 6sn7" adaptor?

Yes they should work. I was contemplating getting them myself though seen as I have removed the rings I can plug them straight in with a 9 pin. Heres another cheaper alternative: http://www.ebay.com/itm/1pc-6F8G-6C8G-TO-6SN7-6SL7-TUBE-ADAPTER-/190991571450?pt=Vintage_Electronics_R2&hash=item2c77fc19fa

post #6644 of 10586
Quote:
Originally Posted by sgbwill2 View Post
 

Yes they should work. I was contemplating getting them myself though seen as I have removed the rings I can plug them straight in with a 9 pin. Heres another cheaper alternative: http://www.ebay.com/itm/1pc-6F8G-6C8G-TO-6SN7-6SL7-TUBE-ADAPTER-/190991571450?pt=Vintage_Electronics_R2&hash=item2c77fc19fa

Much cheaper! Thanks!

post #6645 of 10586
Quote:
Originally Posted by Nic Rhodes View Post
 

The 5692 red is a nice tube but certainly not the best, the problem with them is the price after the Sound Practice article. We are blessed with many excellent 6SN7s however a few are now getting pricey (Tung Sol, the Swedish one, early Sylvania Ws, the red 5692s) however there are still some bargains to be had for not silly money, early Ken Rads, Natuional Unions, CBS Hytron 5692, most ww11 ones (vt 231). I am a big fan of the 50 and 60s 6SN7WGTs and european examples. Still loads of NOS goodies out their unlike some tubes and I haven't even got around to checking out the Russian ones!.

Am actually listening to a pair of Russian generic 6SN7 tubes and they sound mighty good. Strong sounding and i think slightly higher gain than the Ken Rad VT231s.

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