Location: NE England
Posts: 4,175
I'm Jez.
Well, perhaps some of those technically subtle "unwrapped layers", yet to be examined, contain the answers to audio phenomena some of us experience (and can clearly hear), but which you currently can't measure, and thus automatically dismiss as "bollocks"!
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Marco.
http://www.thestainedglasscompany.com
"A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do" -- Milan Kundera.
Location: NE England
Posts: 4,175
I'm Jez.
No problem Dennis
That's impedance matching yes. The now largely obsolete 600R was historically from "POTS" (plain old telephone system) and is also where we get the 0.775V 0VU standard from as it's 1mW into 600R. 75R is used in FM and TV as it's the centre impedance of a half wave dipole in free space. Mostly though 50R is used universally for RF.
An audio amp is a voltage source, ie theoretically zero output resistance, and therefore non of the generated power is dissipated in the source and all we need is to minimise the resistance of the wiring between source and load, power into the load is then of course Vsq/Rload
What you describe with the Nelson Jones (did you have the tuner as well?) has been commented upon several times over the years and could well be due to TID/TIM (a largely obsolete term these days and based on the work of Otala and Lohstro) causing a flurry of higher odd order distortion products on leading edges and hence enhancing the sense of attack... it's usually very fatiguing with longer exposure.
Location: NE England
Posts: 4,175
I'm Jez.
Sorry, Chris. Jez is normally pulled up for this, but the language there is too confrontational, and largely responsible for provoking the heated reaction that ensued.
Please, and this applies to everyone, when challenging and/or addressing someone you think is wrong, use language unlikely to irk or cause offence to the person concerned, as you'll achieve nothing but start an argument, and most likely not of the constructive kind either.
So, people, in future.........THINK before you type! Cheers
Marco.
http://www.thestainedglasscompany.com
"A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do" -- Milan Kundera.
http://www.thestainedglasscompany.com
"A man is a success if he gets up in the morning and gets to bed at night, and in between he does what he wants to do" -- Milan Kundera.
Location: North Island New Zealand
Posts: 869
I'm Chris.
You cannot as I see it have it both ways, in one post saying "there is layer upon layer of technical subtlety to be unwrapped "
then a few minutes latter scoff at Marco's well thought out comment, by referring to technical subtlety and what remains to be discovered, as the Loch Ness Monster.
Discovery is at the heart of every good electronics engineers methods, Mediocrity on the other hand is at the heart of those unwilling to face challenges to progress. Which do you see yourself as ?
Location: NE England
Posts: 4,175
I'm Jez.
Martin
Current Lash Up:
Technics SL1200P CD Player * NVA P90SA passive pre / Krell KSA50S Power amp * JM Lab Electra 926 loudspeakers *
'The best I advice I ever received was to always remember that no-one else has any idea what they are doing either.'