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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: RE: Do measurements matter? - linked article posted by morricab on January 26, 2015 at 07:18:52:
Hi and thanks for the very helpful explanation
But i have an opinion on why solid state usually sounds less musical, less "dynamic"
It is not for the use of negative feedback but more for the lack of enough capacitance in the power supply
This can be verified easily in those rare cases when an upgrade of capacitance is provided even from the factory for some SS power amps
Usually the upgraded version sounds more full, less noisy, more dynamic
If you increase the capacitance enough you can make a solid state amp sound like a tube one.Another point.
SE tube amps are usually tested with very efficient and easy loads
I would try a decent solid state amp with the same speakers and listen
I am sure the result would be equally satisfying
Try instead the SE tube amps with a difficult speaker ... and listen
I can agree that efficient speakers are much more amp friendly and maybe a smart choice in the end
Why to complicate life with difficul loads ?
I said about capacitance because i made some experiments that confirm this. The capacitance used in ss amps power supplies is usually too low
Because big and very good caps cost a lot indeed.
A good starting value could be good quality 20.000uF per voltage rail per channel
for a total of 80.000 uF for a stereo amp
Instead i have seen values of even 15.000 uF ... i can understand that then the resulting sound then is flat ...
Caps are like shock absorbers in a car ... if they are undersized and the road is bumpy the travel is not very pleasant.
Kind regards,
bg
Edits: 01/26/15 01/26/15
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Follow Ups
- RE: Do measurements matter? - linked article - beppe61 10:13:31 01/26/15 (2)
- RE: Do measurements matter? - linked article - morricab 13:45:33 01/26/15 (1)
- RE: Do measurements matter? - linked article - beppe61 04:10:07 01/27/15 (0)
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