m.saunby wrote:
azazello wrote:
I think use 300B only in SE for good and nice sound! PP is not for Hi-End, IMO, with its metal sounding in result switching 2 shoulders of output tubes. /For PP better use KT88/. ODDbLock that I like is between SE and PP with SE sounding and power like 50% of regular PP!
In the past I told Sampleacurate who wants build 2 stages with 300B and 6SN7, that 6SN7 is not for
this....ampl. factor is very, very small!! If your CD player gives 0,6 v output, this multyplay to 30 in SRPP
will = 18 v, that is very, very small to drive 300B with bias -40-50 v.
You can use parallel 12AX7, but it is not good tube for Hi-END sounding. It is only for guitar ampl.
You can use only penthod E180F, E280F, EF861, russian 6E5P, 6P15P.....or some RCA low noises
metal penthode.
Just because it's harder to get right doesn't make it fair to compare great SE with mediocre PP - which is what I suspect is happening. The likes of Quad, Leak, etc. only ever produced PP amplifiers. In the UK SE was used for black and white TV sets, portable record players and kitchen radios.
Most of brands that produce speakers, produce for all public non expencive low sensitivity comercial speakers.
For driving they, another brands for tube amplifiers produce power PP "comercial" ampl. for all public.
I think IMO QUAD is good for all people, but not for High top of "Ice cream".
Please, don't mix both thinks....SE with high quality /Audionote..../ is not for all public that listen Disco and Bum, Bum....
This is only for High Quality sounding with expensive fullrange drivers without filters, that press the sounds....
/I made SE and PP 6P6 - or 6V6 and different of sounding with the same 96 db sensitivity speakers and the same player and PP loosed!/. Sorry, but this is my IMO and IMO my audiophil-friends with SE amplifiers 2A3, 300B, 6S33S, 6S4S, KT88, 6V6.
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Hi End is back proportional to the number of composite parts!
Projects: OTL 6AS7 Gen, Electric, SEs 2A3 RCA, 300B JJ, 6S4S, 4P1L, EL11 Telefunken, 6AS7 RCA, 6S33S, 6S41S, 6S19P, PP 6005 Gen. Ellectric , headphone ampl. OTL Loftin White 6AS7 RCA....SE E84L& E80CC Siemens&Tel-n.
http://azazello-sound.blogspot.com/