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Main :: Spider Valve

Spider Valve power valves
by markpillinger on 2013-04-11 11:40:58

Hi guys

Looking at replacing my power valves. The site says the power valves are 6L6 and mine is fitted with 5881s.

Now I understand that 6L6s and 5881s are of the same family, but is it ok to have 5881s in a UK spec Spider Valve? I know 5881s are listed in the US spec ones but is it ok having 5881s in mine?

Sorry if there's an obvious anwser that I've overlooked, but somebody clear things up for me please.



Re: Spider Valve power valves
by mtnman82 on 2013-04-12 10:28:02

The Sovtek 5881/6L6WGC's that come stock in the Spider Valves are not your ordinary run of the mill 5881's - they are rated to higher specs (power, plate voltage) than standard 5881's.  There's been some discussion on this borad lately regarding tubes, so you may want to read a little.  Realize everyone's taste is different, but for me an upgrade yet preserving the same tone(s) was going to Sovtek 6L6WXT+'s.  I've tried quite a few different power tubes and they all had a effect on the overal tone of the amp, not in a good way IMHO.  The conclusion I've come to is to stick with the 5881/6L6's that come stock or use the 6L6WXT+ (which I am using in both my Spider Valves presently).

That being said, if you want to play with different tubes, use the 6L6 variety as the spider valves have 450V plate voltages and not all 5881's can take that.  Also make sure you bias the amp when you replace the power tubes - very important.  Good luck with it!

And yes it is OK to have these tubes in your UK spec Spider Valve.  Line 6 takes the power mains for your country into consideration, hence the UK version (spec).

The information above may not be current, and you should direct questions to the current forum or review the manual.