Hello ,
just asking if anyone have experiences with this two tubes i know there are differences in mu 12sl7gt have 70mu and 12sn7gt have 20mu and a bit different in heater current 12sn7gt 0,3amp and 12sl7gt 0,15amp , currently i use 12sn7gt would that be a big difference to put 12sl7gt instead of 12sn7gt.
thx
regards
just asking if anyone have experiences with this two tubes i know there are differences in mu 12sl7gt have 70mu and 12sn7gt have 20mu and a bit different in heater current 12sn7gt 0,3amp and 12sl7gt 0,15amp , currently i use 12sn7gt would that be a big difference to put 12sl7gt instead of 12sn7gt.
thx
regards
The 12sn7 and 12SL7 are the 12 volt versions of the 6SN7 and 6SL7. The 12SL7 will have more gain and will not be suited to your circuit without changing the cathode resistors and plate resistors. The 12SL7 will have more gain.
They are good, same specification as the 6SN/L range. Just heaters are 12V not 6V.
The L gives better results for pre amp and the N for phase splitter, common cathode etc.
The L gives better results for pre amp and the N for phase splitter, common cathode etc.
I would suggest to Google the 6SN7 and you will also find a LOT of preamp designs that use this tube. I don't think you can come out and say the 6SL7 is better for a preamp.
It all depends on the circuit. You can find both as preamp and both as phase splitter.
Mapletree uses a 6SL7 as a long tail phase splitter and it works great. I've also seen the 6SN7 with a long tail design. Both tubes can be used in either a preamp or phase splitter.
It all depends on the circuit. You can find both as preamp and both as phase splitter.
Mapletree uses a 6SL7 as a long tail phase splitter and it works great. I've also seen the 6SN7 with a long tail design. Both tubes can be used in either a preamp or phase splitter.
What do you have .... preamp or power amp that you want to switch the tube to a 12SL7?
It is integrated amp it use two 12ax7 two 12sn7gt and two 845 tubes and four rectifier tubes 5R4G.
regards
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I tend to agree with JonSnell, but prefer to use *SN7 in pre-amp and *SL7 in end stage. *SL7 has a much higher gain, lower current draw and significantly higher plate resistance. *SN7 has medium gain, higher current draw and lower plate resistance.
Both can be designed to very linear. However you will need a power supply that can deliver at the very minimum 300V DC, better yet 400V (rectified) to get into a nice linear range.
Both are wonderful tubes and you don't need to get the 12v version to enjoy them. Russian production 6SL7's (6H9C) are in my opinion a bargain. The most inexpesive chinese 6SN7's (6N8P) are also seriously decent.
Ian
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