Search found 603 matches

by Geoff.R.G
Tue Apr 17, 2018 12:16 pm
Forum: General Audio
Topic: (in)FAMOUS SLURPS
Replies: 163
Views: 5383
Great Britain

Re: (in)FAMOUS SLURPS

Standing waves in music really aren't a problem, for a standing wave to exist it has to be excited, once the excitation is removed the standing wave disappears too. A vanishingly small number of musical notes are sustained long enough, at an appropriate frequency, for a standing wave to develop in a...
by Geoff.R.G
Tue Apr 17, 2018 11:33 am
Forum: General Audio
Topic: Silly Hi-Fi Dealers.
Replies: 5
Views: 373
Great Britain

Re: Silly Hi-Fi Dealers.

When the idea is sound quality why would you process the signal, use it to modulate a radio wave and then demodulate it and undo the processing? A few feet of cable will have less effect on the signal, costs less and isn't subject to interference from other RF signals. Then again I only hold a B2 li...
by Geoff.R.G
Sun Apr 15, 2018 1:17 pm
Forum: Elsewhere on the Web
Topic: PFM
Replies: 3647
Views: 221454
Great Britain

Re: PFM

Given that the capacitance of a device is affected by the overlapping surface area, the dielectric constant of the material separating the plates and the gap between them it is very hard to see how the value will change with age. The overlapping surface area is fixed once the capacitor is manufactur...
by Geoff.R.G
Sat Apr 14, 2018 10:51 pm
Forum: Elsewhere on the Web
Topic: PFM
Replies: 3647
Views: 221454
Great Britain

Re: PFM

Its also interesting to see that our old friend Moon the Loon has added his thoughtful input to the NVA A70 Cap update thread: I would recommend getting rid of the POS while you still can and look out for an amp that delivers whatever your speakers require in full class A. https://www.pinkfishmedia...
by Geoff.R.G
Sat Apr 14, 2018 1:52 pm
Forum: Elsewhere on the Web
Topic: The Audio Standard Forum.
Replies: 3782
Views: 283748
Great Britain

Re: The Audio Standard Forum.

On the subject of fuses; I was having a clear out the other day and found a couple of illegal 13A plugs, no insulation on the Live and Neutral pins, so I stripped them and threw them out. I kept the fuses though. Having time on my hands I started rubbing one end of one of them on the inside of my Le...
by Geoff.R.G
Fri Apr 13, 2018 6:56 pm
Forum: General Audio
Topic: Commando Sockets Plugs
Replies: 20
Views: 448
Great Britain

Re: Commando Sockets Plugs

These connectors can't be called discrete can they, they are massive. If you really want something for domestic use go for the 15A style plugs.
by Geoff.R.G
Fri Apr 13, 2018 6:48 pm
Forum: General Audio
Topic: Speakon V Bananna Plugs
Replies: 6
Views: 212
Great Britain

Re: Speakon V Bananna Plugs

Better because simpler. Bare wire is better to begin with but goes off very quickly unless tinned and cleaned and tightened regularly. I like Z plugs because of the sharp edges they clean and remake contact every time you use them, and they are easy to use in manufacture. Speakons to me are over co...
by Geoff.R.G
Mon Apr 02, 2018 1:56 pm
Forum: Elsewhere on the Web
Topic: The Audio Standard Forum.
Replies: 3782
Views: 283748
Great Britain

Re: The Audio Standard Forum.

Back in February I posted that I had reported one of the suppliers of these fuses to Citizens Advice, I later received an email stating that my complaint had been forwarded to Trading Standards. This was, according to various web sites, the correct process. I doubt I will hear any more but if I do I...
by Geoff.R.G
Mon Apr 02, 2018 1:29 pm
Forum: NVA Discussions
Topic: NVA specs
Replies: 28
Views: 1077
Great Britain

Re: NVA specs

Specifications have their uses, one wouldn't use a transistor rated at 1A in a circuit that was going to carry 4A continuously nor would the use of 0.5 cross section wire be used in a 16A circuit. However, just because an amplifier is rated at 150W doesn't mean that it will deliver that power into a...
by Geoff.R.G
Mon Apr 02, 2018 1:15 pm
Forum: General Audio
Topic: Speaker 'Noise'
Replies: 12
Views: 558
Great Britain

Re: Speaker 'Noise'

Thanks for that.