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andyr

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andyr last won the day on December 16 2015

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About andyr

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  • Birthday 30/04/1949

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    Melbourne
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  1. O gurus - am I correct in thinking that the delay inherent in an XO (ie. a LP/HP filter pair) depends on just 2 things: the frequency of the XO: the lower this frequency, the greater the delay on the low-passed driver is - compared to the high-passed driver. the order of the slopes (assume a symmetric XO): the steeper the slope, the greater the delay on the low-passed driver, - compared to the high-passed driver. Thanks, Andy
  2. andyr

    Vincent SV-237 Hybrid Amplifier

    Great to hear that, djmt. Yes, I agree - my 69 year old eyes leave a lot to be desired! Buy yourself a light / magnifier headband! Andy
  3. So you've given up on the ME, Cliff? Which is very interesting. I've been using an Onzow for many years - and I thought it was the best. So I poo-pooed people posting about how an ME pad was a good stylus cleaner. Then I read the article that someone here linked to and realised how the ME pad worked. Very similar to the famous (infamous! ) green Linn sandpaper. The article said that the heat involved in the stylus travelling the groove baked any cr*p (which is in the groove) which the stylus finds ... onto the stylus - so that you needed an abrasive action like that provided by an ME pad to remove it. And a sticky-gel won't lift this baked-on gunk - you need to abrade it off the stylus. But what you say (gunge builds up around the base), makes a lot of sense. So I tend to agree with av ... after a period of ME use, you need to use a liquid cleaner - like the AT cleaner that diynamic posted - and then more dabs of the ME pad. But, as I said - without pics this is all just conjecture! Just as a reference point - in terms of stylus porn - attached is a x60 pic I took when I received my Stanton WOS CS100 back from having a new tip mounted. A virgin stylus! But I suggest this argument will only be resolved by some (at least x60) USB microscope pics of styli after a period of ME cleaning ... followed by a period of Onzow cleaning. Andy
  4. andyr

    Vincent SV-237 Hybrid Amplifier

    Vincent is German, is it not? As such, they would use metric - not imperial. Are you sure they aren't 'torx' bolts? Andy
  5. But the way I read that definitive article on using a ME for cleaning styli - which somebody posted recently (possibly on this thread?) - you don't need to drag the stylus through it ... for it to do its job. As you drop the stylus into the ME pad, the matrix of abrasive fibres which forms the ME pad rubs against the stylus (removing the baked-on gunk which it's acquired from travelling through the groove). Sure dragging the stylus across the pad's surface will mean more fibres brush across the stylus ... but the article didn't suggest this was necessary (unless I mis-read it). I'm with what @stevozsays ... several up-and-down dabs is all you need. Andy
  6. You dab. If you wipe it forward, with the stylus embedded in the ME substance ... I suspect you will break something. Andy
  7. andyr

    Old faithful or old POS?

    Aah, OK - I used my Nitty Gritty for cleaning - the D4 was only ever used for a wipe before and after play ... like I do now, with my AQ CF brush. Andy
  8. andyr

    Old faithful or old POS?

    I had one of those - and used it for many years. Now superseded by a CF brush, I suggest. Andy
  9. andyr

    Cork or not to Cork?

    Which side do you play up, Tb? I had a leather mat for a few years - as I have a mate who is always experimenting with different mats. When he gave it to me, he said "use it suede side up" - so I did. A couple of years later, he told me to use it "leather side up" - and damn me if that didn't sound better! Andy
  10. andyr

    Vinyl playback - sounding flat

    If you're not using a weighing scale ... how do you know it was 2gm and is now 1.6gm? Are you using a guage on the arm? If so, then I suggest, yes, a digital weighing scale would be a good thing to get, if you are serious about vinyl replay. A quality recording will improve things like timbre and dynamics ... but you stated that (playing vinyl) "Vocals, drums, guitars are all coming from the centre.....a few sounds coming from the periphery but mostly the middle. I remember listening to some digital running through the same setup and the soundstage was wide". That suggests to me that cart setup is the issue - if your digital playback is fine. Andy
  11. andyr

    Vinyl playback - sounding flat

    Not quite following you, t_mike?? The OP didn't mention changing VTA - so are you suggesting a change in VTF from 2gm to 1.6gm will produce a significant enough change in VTA ... that this is the cause of the change the sound? Andy
  12. andyr

    Vinyl playback - sounding flat

    If you had it at 2gm before - that's in the recommended range (according to HiFi Simon). So it should've sounded OK. Which leads me to ask ... what are you using to measure VTF? A digital guage? Andy
  13. andyr

    Power amp connection query

    So a volume control has no effect on the sound, George? (Apart from reducing/increasing it, that is!) Get real - every volume control degrades the sound ... the issue is ... which brand of volume control degrades the SQ the least. Andy
  14. andyr

    Weston Acoustics or McChanson amps

    You seem to have a serious problem, DM - which to me ... there is only one way to solve! You have to buy both amps ... and then report back. Because no-one, it seems, has previously compared both amps. Sure, that's a PITA - and expensive! But no-one is going to be able to answer your above questions - so you need to listen yourself - and then you'll be able to see what carefully wound O/P trannies (wound by someone who knows what they're doing) ... do to the sound. Andy
  15. andyr

    Soldering iron tip advice

    For heavy duty work, I recommend a 'mini Scope' - see here: http://www.radioparts.com.au/product/38532064/msb-mini-scope-soldering-iron-adjustable-power-and-heat It has a lever which you depress to make the carbon tip (inside the ss barrel) contact the end of the soldering-iron tip - and that's how you control the temperature. I use their 6mm chisel-tip when soldering plugs or RCA sockets ... there is also a small point-tip for finer work (which delivers much more heat than the point tip on my temperature-controlled iron). You do need a Scope transformer to power it, though. Spare parts are readily available from the Scope distributor - Warren & Brown, in a western Melbourne suburb (Footiscray?) Andy
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