Why do I need power management if I have a great power cord?

OK. What is far more likely is that the 48 Amp value is actually how much current is present when the power supply of the amp is shorted. Its available to the output section in the form of charged capacitance. This is used to help reduce IMD in the output section and is not something that the output section can pass to the loudspeaker (if you see what I did there 😁).

Yup, caught that. Shorted or driving Acoustats 😁 Talk about a vicious load for an amp. They were the reason for Ampzillas and Crown DC300 amps! The DC 300 would drive a cast iron pipe or a welder! 🤣

I guess all the "me too" posts makes it official:
they don't know what they're talking about.

All the best,
Nonoise

+1

*********************

Isn't it curious how one side says:  I hear things 👍🏼 and the other side calls those people stupid.

Bruce19 -

output impedance

current well

@Bruce19

Basic physics.  Everytime you double the size of a conductor, you reduce the resistance of the conductor by half.  Output impedance is the product of LCR.  Reducing any aspect of the impedance allows the available current to increase (the current well).  Instantaneous power demands in audio are not often spoken about.  Take the Telarc recording of the 1812 Overture as an example.  Someone smarter than me did the calculations on the reproduction of the cannon shots in that recording.  To accurately reproduce that event considering the average listening level of 2 watts would require 10,000 watts of instantaneous power.  Point of the exercise was to illustrate the power demands on a musical system.  I don't know of any presently available amplifier to produce that type of current dump.  If there was an amp capable of  that considering that most amplifiers (not talking class D here) are somewhere between  50%, - 78% efficiency.  Do the math.  The power distribution cable from the transformer to the entry service is #2 wire.  It just makes sense, logically and mathematically, to supply a dynamic system with huge instantaneous current demands as much current as possible.  A Class A PASS XS300 monoblock will dump 48A on demand.  You need two of these.  See where this is going?  

Solid state systems are current hogs.  Ever feed a hog? 

Holmz, there is no future in trying to have a cogent discussion with a person that misses 90% of the conversation to dwell on 10%. You are obviously so much smarter than I am.

To quote directly from one of many reviews on the Xs300: "The Xs 300 mono amps were not only better sounding in every respect than the XA-160.5s, but they had nearly twice the power: 300 watts into 8 ohms, 600 watts into 4 ohms, and 48 amps worth of peak output current."

Let’s take your analogy to the opposite side of your argument. 900W represents 7.8A @ 120VAC. 24AWG wire has a current rating of 8A. Are you willing to use 24AWG on the Xs300? Ask yourself why Nelson would use a Neutrik powerCON rated for 32A @ 250VAC.

Abruce19

You missed my point. I am a proponent of large gauge dedicated wiring runs from ythe service entrance to the system... NOT thin gauge romex.

Power cables do not store energy, at least the good ones don’t.

I built my first amp when I was 13 - 61 years ago. I have built over 30 amplifiers in my lifetime including an F6 for a friend of mine. I grok amplifiers.

atmashere

I've read that link several times in the past.  BTW, I like your amps!

The quote came from Nelson Pass.

@bruce19 

You do you.

I keep forgetting what it is to have a "discussion" here 🙄  Here we go round in circles...

atmosphere...

I’m a power supply guy and it occurred at a show in a discussion with Nelson, who is also a power supply guy.  I, too have read about that number in reviews...