With any class of amplfiier other than class A, power supplies, and their ability to deliver instant current at a sustained constant voltage becomes all important!
With any class of amplfiier other than class A, power supplies, and their ability to deliver instant current at a sustained constant voltage becomes all important!
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
I find the online calculators useful to give a ballpark amp wattage required.
such as https://www.extron.com/calculators/a...wer/?tab=tools
Current: [P20] Roon/Tidal > Custom PC> Chevron Paradox NDF16 > Phast Pre > Neuro. 686 > Tannoy Berkley (RFC tweaks)
8 watts then.
Mine was around 15 watts for 93db, with 6db headroom!
"Today scientists have substituted mathematics for experiments, and they wander off through equation after equation, and eventually build a structure which has no relation to reality"
Nikola Tesla
Its now a conspiracy theory to believe that the Immune system is capable of doing the job it was designed to do.
A fish is only as healthy as the water its swimming in ! [Dr Robert Young]
www.tubedistinctions.co.uk
Matthew 5:10
I think it should suffice.
Location: Seaford UK
Posts: 1,861
I'm Dennis.
I used to run a 10W class A amp at just below clipping and get 103dB. I think that this factor is exaggerated in importance, but some headroom id needed.
If the speakers are a difficult load, for example one which produces such a difficult phasing of current that it becomes very high, current delivery is a factor. But this is a different consideration from having enough power to follow peaks.
I went in the 70s for an interview with Redifusion, Orpington, and they said that their headroom was running only 1dB higher than the program peaks.
I don't think it is exaggerated, although I have noticed that people don't seem to notice when their amp is clipping on peaks. I notice and when I had the cat, who would sit and listen with me, he would react to the clipping. I'd say 10-14 dB of headroom is needed for hi-fidelity.
I'd guess 1970s analogue TV sound was heavily compressed, back then you had one little elliptical speaker in a TV and about a 4 watt amp so it needed to be.
Current Lash Up:
TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.
Location: Seaford UK
Posts: 1,861
I'm Dennis.
I used that Nelson-Jones amp with Tannoy Gold Lancs, and had a PPM, so peaks were accurately measured, and the Quad 33's volume pot was at just over 8 1/3, if I went higher it got rough. So as long as clipping is avoided there is enough headroom.