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XTC · 18th Oct 2004, 8:43 pm

My 1966 copy of Radio Valve Data (Iliffe) gives a string of equivalents for EL33 - 6AG6G,KT61,6M6G,N147,BVA264/5/6/7, all of which are rare and expensive. NOS EL33s are available at a price (£15 or more). EBL31 and EL3 look like direct electrical equivalents, with rewiring/rebasing. They're damned expensive - but if you had one to hand.........

Reading the thread Paul referred to, it looks as if Ferranti, at least, regarded 6V6 and EL33 as near equivalents, with circuit adjustments.

If the radio was of particular value to me, I'd be inclined to splash the 15+ notes, otherwise cautiously try the 6V6 sub with mods as described in the other thread.

6V6 vs 6F6? Dunno, both have far lower gm than the EL33. EL41 looks pretty close. Yes, there'd be a nasty looking adapter to build with an octal base and B8A valveholder.

Pete.

18th Oct 2004, 8:43 pm	#3
XTC Retired Dormant Member Join Date: Oct 2004 Location: Bristol, UK. Posts: 837	Re: Replacements for an EL33 My 1966 copy of Radio Valve Data (Iliffe) gives a string of equivalents for EL33 - 6AG6G,KT61,6M6G,N147,BVA264/5/6/7, all of which are rare and expensive. NOS EL33s are available at a price (£15 or more). EBL31 and EL3 look like direct electrical equivalents, with rewiring/rebasing. They're damned expensive - but if you had one to hand......... Reading the thread Paul referred to, it looks as if Ferranti, at least, regarded 6V6 and EL33 as near equivalents, with circuit adjustments. If the radio was of particular value to me, I'd be inclined to splash the 15+ notes, otherwise cautiously try the 6V6 sub with mods as described in the other thread. 6V6 vs 6F6? Dunno, both have far lower gm than the EL33. EL41 looks pretty close. Yes, there'd be a nasty looking adapter to build with an octal base and B8A valveholder. Pete.