steve 57

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About steve 57

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  • Location
    east yorks, , UK
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Wigwam Info

  • Turn Table
    td124/frs64s /spu
  • Integrated Amp
    Pre war
  • My Speakers
    Bigger than the norm

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  1. steve 57

    Do your “standards” go higher as you upgrade?

    Totally agree many solid-state amps tend to cause treble harshness, it's not always obvious and many speaker's don't always illustrate it.. but it's there.. and it's not always the amp that gets blamed when more resolving speakers are tried.. I find metal cone speakers very good at giving an impression of more detailed. But when you listen it's not actually there. It's the same with those led volume preamps . A few years ago there was one doing the rounds on loan, so many people with normal speakers said it added life and loved it. Myself and a mate tested it and we could clearly hear the distortion that was being produced through my speakers another mate actually measured the distortion it was producing, and my speakers was clearly reproducing it. The truth is with hifi gear if your used to listening to say an average hi fi sound you may not always appreciate a better system But if your used to hearing a better system the average system is obvious to you.. hope that makes sense. A recent example was just before the wam show, I bought amy whitehouse's back to black cd. I have a good solid state amp that get used as a daily play with my big red speakers. There where a few peaks on her voice that sounded harsh, changing to my valve amp a lot more detail and lifelikeness came through and her voice sounded clean as it should It was the first time I heard a CD that upset my solid state amp. It would have been easy to blame the recording or the speakers, the knowledge I've gained building amps and speakers this last few years help me recognise a lot more than I did 20 years ago.
  2. steve 57

    2020 Spreadsheet Now Live

    Cheers gents. I have quite a good collection of rare valves. I may try and knock up a couple of amps a high power amp (6w+)and a low power one The high watts is likely to be based around the stc 4300a or the gec da100 and a couple of other choices I have quite a few really good sub 2.5 watt valves from the late 20s early 30s that really sing. Early tilted anode, globe px4 and mazda p650 spring to mind
  3. steve 57

    2020 Spreadsheet Now Live

    I was going to come as a visitor next year.. but I've succumbed to the temptation and put my name down... I have plans to build something new. Possibly new speakers and an amplifier with some rarer and more exotic valves than the px25s in my present amp..
  4. steve 57

    Are you keeping your old stuff alive?

    I was up to around 10,000 valves a few years ago. I have sold quite a few these last 3 years. Along with the old bikes and car and piles of amps, decks and speakers they have turned out to be the best pension supplements. I'd love to hear about the box of we 300b. I was lucky enough to get a pair of stc 4300a a few years ago. They sound really good.
  5. steve 57

    Are you keeping your old stuff alive?

    Those early kt66/ vt75 valves are a step up from post war kt66s. You are doing them a disservice driving modern (?) 845s. But as you've found out, they still improve things.. They are as good as px4s. But you need efficient speakers if used on their own.😁 I have a collection of 1920-30s valves.. they all sound better than 1950s valves but there are few ready built amps for them. The gain is all about the valve type, they match most of today's valves. The late 20s and 30s made indirectly heated valves are the equal of any dht valves in my experience.
  6. steve 57

    Great deal on 55 inch 4K Samsung tv

    Really.... from 2014 The BBC has been forced to double the amount it needs to plough into its pension scheme to £740m over the next four years, to try and plug a funding deficit that has ballooned to £2bn. The amount that the BBC has agreed to pay over the next four years, until the end of 2017, has increased from £375m to £740m. Licence fee payers will foot the bill, with the BBC shying away from attempting to increase staff contributions after a bruising battle over reforming the pension scheme in 2010 that led to industrial action
  7. steve 57

    So have speakers really got that much better?

    Really... I think your miles off But If you said close micing can produce an unnatural timbre on some systems I would have to agree... a good system should replay them
  8. steve 57

    Sub bass & bass Speakers with 18" Volt RV4564 drivers

    I always think cone speakers integrate better when they are all around the same efficiency.. long term listening is the key, it will take a while to get used to them
  9. steve 57

    Sub bass & bass Speakers with 18" Volt RV4564 drivers

    These look great Keith You can't beat big drivers in my view. I would be careful with the port tuning If you go too low you can start to hear the ports effect on the bass (although some may like that), my view is the drivers fs at 26 Hz is low enough..probably tuning it to 30-40 Hz may well sound better. With larger drivers the port seems to have less of a negative effect on the sound, which is another positive for big drivers. Effortless .. you will soon be needing to update the main speakers to keep up..😉 My set up uses both a heavy weight 18 and a 12 My daughter has played her 5 string bass through them, there is no noticeable loss of volume on the lowest notes. That alignes with my measurements. That covers most music's bottom end. Can't wait to hear them next year ?
  10. steve 57

    So have speakers really got that much better?

    Your too kind, cheers
  11. steve 57

    Measurements, Compatibility and Ears 👂

    It's not new, it was known about in the 1940s I've seen it written in some of my old books that it was not recommended to plug the control unit into the power amps power supply.(mono) Then in the late 50 onwards leak had the stereo 20 and plug in pre running on the one power supply.. and set the standard Now you can run an amp like this and sound good if you lots of inter stage and inter channel smoothing but the best power supplies are low impedance Regulation helps but how it is implemented is key. Class A is another can of worms in push pull amps I'm not sure it's always the best sound. But again that depends on implementation.
  12. steve 57

    Measurements, Compatibility and Ears 👂

    The voltage waveform that goes into the amplifier. It's not the same when it comes out and goes to the speakers.
  13. steve 57

    Measurements, Compatibility and Ears 👂

    Its power supply modulation. Its not really a distortion... Its not really a problem with test tones played on one channel. But it's one of the many, but a major factor, that stops many amplifiers that measure well but not sound so good and is much more of a music destroyer than a bit of low order harmonic distortion What my point is there is a whole raft of technical reasons for amplifiers and speakers which have supposedly low distortion but don't sound like it.. And its not always about distortion it's cancellation. I'm more than happy to chat about my findings and take on things next weekend.. Cheers..
  14. steve 57

    Measurements, Compatibility and Ears 👂

    In simple terms I'm talking about the output of an amplifier being contaminated by the signal that it's trying to reproduce... You can measure the signal all over the power supply you get cross talk... with the power supply being the culprit So in most amplifiers there are positive and negative voltages all at the same time (Push & pull!) It all gets mixed up in the output. That causes cancellation of both distortion and signal. Now I'm aware the above will take some getting your head around.. but please measure the a.c. signal at points around your dc power circit in your amplifier. Then think about the effect that this may be having on the signal before declaring me a nutcase.. I was shocked when I did those measurements a few years ago. The proof for me is that separating out the contaminant... ie the power supply, dramatically improved the amplifier More life like clarity and more accurate dynamics I'm aware there a whole raft of other issues with amplifier design and topologies.. nothing's truly perfect
  15. steve 57

    Measurements, Compatibility and Ears 👂

    Amplifiers should be looked at as a series of amplifiing events within the amplifier Most amplifiers split the signal then add it together again, every aspect of an amplifier, if not designed with great skill does result in cancellation of the signal. Distortion measurement is about additions .. not subtraction when music is playing It's the subtraction that makes the music less lifelike The're too much of people falling for the hifi trades Low distortion measurement is the final frontier .. it's far more complicated than that..and because it's difficult to measure the shortcomings of most amplifier designs.