steve 57

Wammer
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About steve 57

  • Rank
    Wammer
  • Birthday July 1

Personal Info

  • Location
    east yorks, , UK
  • Real Name
    steve

Wigwam Info

  • Turn Table
    td124/ 301/ Oracle
  • Tone Arm & Cartridge
    Frs64s / 3012/ spu
  • SUT / Phono Stage
    834p / kondo
  • DAC
    Teradak 16 chip
  • Integrated Amp
    Px25 /px4/p650 SETs
  • Pre-Amp
    Less is more
  • My Speakers
    4 way semi OB diy
  • Trade Status
    I am not in the Hi-Fi trade

Recent Profile Visitors

1,515 profile views
  1. There was a pair of those or very similar speakers at the Harrogate show 3 years ago. Can't say I was impressed, but they may well have not been set up correctly.
  2. Speakers take along time get then right dave, Ive been building them since the mid 90s, and still think about way's to improve them, sounds like you are getting close...
  3. Read the link I posted about 4 pages back regarding distortion measurement.
  4. I don't think you understand what the issues are to say that Go back and read would be my advice..
  5. I believe that nobody is measuring the differences you can hear because it's not easy to do..
  6. Good points, coupling capacitors for instance have (slight?) differences in sound due to the way they are made, but usually very similar specs. I'm sure in the video he's referring to the various hi fi standards, rather than what's actually measurable.
  7. Agree.. but i bet within a week some one will be quoting low distortion as the key to a good sound...
  8. I enjoyed that video, reminded me of one of my books (wrote in the 60s) that says they measured up to 25% crossover distortion on many amplifiers at the time.
  9. Definitely not... 😀
  10. I suppose the other side to that comment is that some people prefer to listen to equipment that does not sound well...
  11. I bought about two dozen k72s at a radio rally, I'd sold on half of them before I realised that they might be OK.. As the values are quite small I tend to use them as a bypass cap with some large 1970s 1uf British made caps, duolectrics, again I bought a job lot, that sound very similar to the k72s for coupling. I have quite a few jenson copper foils, the best being a pair 3.3 uf that are really big, but sound very open I tend to use them on breadboard builds but as yet not found room for the in any of my cased up amps. I have a plan for them.
  12. It's a difficult job to get the bass balance right dave, too much can sound great on 90% of music, but it should sound right on all music, A light bass can give the mids some illumination which can also sound good with some music. For diyers it can be a challenge to get an accurate balance.
  13. Following on from my posts about distortion. I've spent some time on the net looking at distortion, most stuff on there is not very informative, in fact it echos Keith's views. For me, my findings are that push pull cancels the music signal mainly due to lack of symmetry between the push and pull, and the power supply 'contaminates' the audio signals due lack of decoupling between stages and chanels In my view these are the main shortcomings with most (nearly all) amplifiers For the best sound quality transistors and other components should be exactly matched to ensure equal paralleled or symetrical (for push pull) output. Normal sign wave testing does not highlight the failings from the above not been followed, but when a complex music signal is played, one can hear clear differences I found this link below that explain the difficulties of measuring the ability of amplifiers to reproduce music or complicated wave forms. If you are interested please go on to read page two as it is very relavent to what I've found, and although it can be heavy for the not so technical, the gist of the findings will be apparent What it does highlight is the difficulty in measuring what we can easily hear. I have found that some don't trust their ears and believe that the so called low distortions must be more accurate.. What would say is please be open minded.. http://www.audiomisc.co.uk/distortion/page1.html
  14. I'm not going to try and change your views Keith.. i know you have some very valid opinions on hifi I've been building solid state & valve amps for over 25 years, have attended most of the wam shows, organise the audio talk diy meets that have run for 15 years or so. I've heard alot of kit. I trust my ears.. most of the time ... The fact the single ended amplifiers to many people can sound more real is a fact. You don't have to agree. Morgan Jones agreed with my view regarding push pull signal cancellation , I trust his views far more than your views...sorry I know you do not get or want to hear my views. That's fair enough, but it does not make you right and me wrong. I've heard some distortions that make some systems sound better, when I've tried them on my system they sound distorted. There's also some great systems regardless of topologies A guy at scalford once described my system has been able to listen to the 'back' of the recording, a nice comment. I've not heard any distortion that does that to music.. Me I'll take (most of the time) less than 1% 2nd harmonic and virtually no other distortions than many, supposedly low distortion systems I've heard I think I'm not far off with what I wrote.
  15. I've been wanting to jump in on a lot of the comments but I've been holding back.. Valve distortion.. A lot of valves have much lower distortion than transistors to start with. You can use the same corrective measures to reduce the distortion further in valve amps, they then tend then to sound just like the average transistor amp.. But valves generally don't need a lot.. or any.. corrective feedback so they tend to be used with just a little or none. And they tend to sound better for it The sound of many immaculately measured amplifiers is that of signal cancellation, its not neutral.. or nothing added as I see regularly quoted just because they are low distortion. I've found that most measures to to reduce distortion cancel the fine parts of the waveform Remember transistors on the other hand tend (but not all) tend to sound dog rough with out enough feedback Nelson pass showed people preferred the sound of a little 2nd harmonic. But it was not clear if they liked a little 2nd harmonic or disliked the sound with what it took to remove it.. Think about that one... I use set valve amps, no feedback, no push pull to cancel the 2nd harmonic. Power supplies that reduce intermodulation distortion. No crossover distortion. I use them well within their ratings so they are low in 2nd harmonic. I cannot tell by listening if I've got a fraction % or 3% of 2nd harmonic.. sounds it sounds the same, I have no reason to disbelieve the old 5%+ rule most of my loud listening is at 1/2watt or so I believe that single ended operation is less of a sound killer than most push pull amps, both single ended solid state & valve. The drawback is you need high efficiency speakers. Now I know there are well engineered exceptions to what I've said, but simple seems to work best. Odd harmonic distortions in small quantities spoil the sound. Total distortion measurements are not worth anything in my view, indeed there was a big push to re classify them in standardised specs in the 50s. I've heard too many amps, amps that make background clapping sound like a football rattle, and that sound dull and lifeless, amps that kill dynamics to some degree. There all out there there in large quantities. I'm happy to do a/b comparisons and measurements at the wam show or my home once we are back to normal. Good sound is not rocket silence. It's about the simple stuff.. Distortion is of course important, but it also needs to be understood.