Am used to big box store home theater amplifiers; pioneer / jvc entry level between early 90's through to 2012 or so.
Ratings always 100w / ch.
for example last avr I bought as new;
pioneer vsx-522(2012) power supply 415w....funny note, I had googled the release date, and first line I read is from pioneer ".....With 700 watts of clear audio reproduction..." lol
I recently picked up an NAD T747 (2010).
It's rated at 110w stereo, 60w 7 channels driven. (both 20-20k / .08thd)
The power supply is nearly same power as the pioneer; 420w.
In stereo, the NAD sounds much more powerful. It can drive much bigger speakers and maintain clear sound.
In fact in stereo, the NAD sounds comparable in power availability to drive speakers, as the onkyo sr-tx809 which is rated 135w and has a 900w ps. (9 channel avr)
So that highlighted to me dichotomy / components of power supply section, and amplifier section.
The entry level NAD has amazing amplifiers. The power supply, like many brands, is insufficient for powering all the amplifiers to their max spec.
Which has me wondering, less the "auxiliary" power supply windings, can I power the NAD's amplifier with say...the 900w onkyo power supply? Does ht amplification work as my simple reasoning figures; is this possible?
Ratings always 100w / ch.
for example last avr I bought as new;
pioneer vsx-522(2012) power supply 415w....funny note, I had googled the release date, and first line I read is from pioneer ".....With 700 watts of clear audio reproduction..." lol
I recently picked up an NAD T747 (2010).
It's rated at 110w stereo, 60w 7 channels driven. (both 20-20k / .08thd)
The power supply is nearly same power as the pioneer; 420w.
In stereo, the NAD sounds much more powerful. It can drive much bigger speakers and maintain clear sound.
In fact in stereo, the NAD sounds comparable in power availability to drive speakers, as the onkyo sr-tx809 which is rated 135w and has a 900w ps. (9 channel avr)
So that highlighted to me dichotomy / components of power supply section, and amplifier section.
The entry level NAD has amazing amplifiers. The power supply, like many brands, is insufficient for powering all the amplifiers to their max spec.
Which has me wondering, less the "auxiliary" power supply windings, can I power the NAD's amplifier with say...the 900w onkyo power supply? Does ht amplification work as my simple reasoning figures; is this possible?
Yes, your assumptions about the PSU being responsible for what you are hearing is almost certainly correct.
Making any modifications to a modern HT receiver would be close to impossible. There is just too much stuff going on in there to make any substantive changes. Switching, converting, digital, analog, mixing, DSP, amplification, decoding... the amplifier is actually the simplest part of it. The PSU from one essentially could not be transplanted into the other because the power requirements of all the ‘other’ functions of the receiver may be different. Never mind the ratings of the associated components in the amplifier itself, for instance if local filter caps are below the voltage of the new PSU they will fail, sometimes spectacularly.
That said, it does go to show that PSU is actually what separates the big burly HT receivers from the cheap ones.
Making any modifications to a modern HT receiver would be close to impossible. There is just too much stuff going on in there to make any substantive changes. Switching, converting, digital, analog, mixing, DSP, amplification, decoding... the amplifier is actually the simplest part of it. The PSU from one essentially could not be transplanted into the other because the power requirements of all the ‘other’ functions of the receiver may be different. Never mind the ratings of the associated components in the amplifier itself, for instance if local filter caps are below the voltage of the new PSU they will fail, sometimes spectacularly.
That said, it does go to show that PSU is actually what separates the big burly HT receivers from the cheap ones.
Thanks for the reply!
That's too bad it's not a swap 'em out thing lol
I can see now how that makes most sense too, NAD wouldn't provide the same level amplifiers for the surround channels, given the limit of the PS. But being a "music focused company" put in very nice stereo amplifiers for a nice 2 channel amplifier experience.
I am mixing ratings, but I have no direct comparative. The onkyo is 135w ifc and the nad is 110w 20-20k .08thd. NAD says 160w Dynamic, but I think that is short burst where ifc is long term (but 1khz only lol)
I have the NAD for sale, replaced with marantz sr8001 (am only after amplifier upgrade, video isn't relied on / necessary for me) but has me rethinking. Seems while the marantz is a big ps / multichannel amp upgrade, its a pretty big stereo only degrade.
That's too bad it's not a swap 'em out thing lol
I can see now how that makes most sense too, NAD wouldn't provide the same level amplifiers for the surround channels, given the limit of the PS. But being a "music focused company" put in very nice stereo amplifiers for a nice 2 channel amplifier experience.
I am mixing ratings, but I have no direct comparative. The onkyo is 135w ifc and the nad is 110w 20-20k .08thd. NAD says 160w Dynamic, but I think that is short burst where ifc is long term (but 1khz only lol)
I have the NAD for sale, replaced with marantz sr8001 (am only after amplifier upgrade, video isn't relied on / necessary for me) but has me rethinking. Seems while the marantz is a big ps / multichannel amp upgrade, its a pretty big stereo only degrade.