SU Tech Specs
Posted by: Paulq on 25 May 2016
Geeky question but I was asked a question today and can't find the answer. Does anyone know where i can find the current output and damping factor for the SU?
(Or does anyone just know what they are?).
Thanks a lot.
Paul,
try an e-mail to Naim (info@naimaudio.com).
Power output: 80W per channel 8Ω both channels driven.
Damping Factor: Sufficient
Its in the usual place for all the products, Naim's web page ....... https://www.naimaudio.com/product/superuniti ........ 80W per channel into 8Ω, 120W per channel into 4Ω (0.1% THD both channel driven)
DF is never listed. (IMO) its all a bit nonsensical, but whatever its always low on Naim amps as they don't have an output stage inductor.
Mike-B posted:...
DF is never listed. (IMO) its all a bit nonsensical, but whatever its always low on Naim amps as they don't have an output stage inductor.
Mike I'm not sure it's due to the lack of an inductor. I thought it was lower because Naim use a poweramp design with lower open-loop forward gain and less dependence on the negative feedback.
I'd agree it's mostly nonsensical, in most cases, at least 90% of the speaker circuit resistance is in the speakers themselves, the speaker cables and poweramp output impedance (i.e. DF) are minor considerations in comparison.
I understand it as simple output impedance & no output inductor gives a marginally lower impedance - I dare say it can be made to include all sorts of things like gain & feedback with the amp end, but its all academic with an amp (I did call it nonsense). Its more relevant for the 'speaker.
Mike, correct, but low output impedance gives a high DF!
Oh well, I'm blown outta the water, still a load of nonsense .............. I've found some words from Elliott Sound Products http://sound.westhost.com/impedanc.htm#damp I might have a read one of these dull wet days