Atmos is totally not worth it, unless you have a proper cinema room
I have a very old (but still very good) amp which can do dolby digital.
Is it worth me upgrading to a modern amp that can give me Atmos ?
Was thinking of the Sony tr-dn1080 but just not sure its worth it.
As long as the Laws of Physics stand, then the wattage going to the speakers can't exceed the wattage drawn from the mains. The STR-DN1080 is said to draw 240W. What does your existing amp consume at peak?
LOL at that. My two channel amp draws upto 3 times that.
Care to elaborate?
What I don't understand in specs like that, is that if it's only putting out 140w per channel, where's the other 300 going? Aren't transformers usually pretty efficient?Apparently my Quad power amp pulls upto 750w. Chances are that's using nothing like that much in normal use, but on transient peaks, it's not going to hurt.
https://www.quad-hifi.co.uk/artera-stereo/
What I don't understand in specs like that, is that if it's only putting out 140w per channel, where's the other 300 going? Aren't transformers usually pretty efficient?
What I don't understand in specs like that, is that if it's only putting out 140w per channel, where's the other 300 going? Aren't transformers usually pretty efficient?
Fairy muff. I know my amps not got that much power (iirc the PSU has about 500w to play with), but I've only once managed to max it out and only recently when watching Netflix via sky q but the film was mega quiet which is what the problem was (had to go upto -20db volume).Not really.
Some very rough figures
Class A - 25%
Class A/B - 50%
Class D - excellent (read as 'expensive') <90%. The mediocre ones might scrape by on as little as 60%
(YMMV)
Also, the power output depends very much on where abouts on the distortion curve the reading is made. Measuriii at 10% THD will give a very large wattage figure, but sound pretty dire. Measuring at 1% will give a much lower power reading but sound much sweeter. Measuring at 0.1% will lower the power reading again, but we're getting close to the best that the amp will sound. Measuring at 0.01% might not sound any different to the untrained ear, but might well be the amp's sweet spot.
@Mr_Sukebe's amp doing 140wpc is barely ticking over. It has been measured very conservatively. There's a tonne more power on tap for the asking.
Typical small Class D or switch mode amp making a claimed 1.21 gigawatts a camp (enough to send Marty back to the future in his Delorean) has everything thrown in to max out the measurement.