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

Yes, but the resistor will work against you than for you. It will absorb power too- for example if a 4 Ohm resistor in series with a 4 Ohm speaker, the resistor will absorb about 1/2 the power! Its not practical, and the speaker will see a vastly reduced damping factor.

@bruce19 

And the 4+4 (system) will result in half the power at the same level that the sole speaker at 4 ohms would have gotten

So the speaker will get 1/4 of the power, and the resistor 1/4 of the power… and the 1/4+1/4 sums to halving the power.

It may be good to try for a listening test, and cranking in and extra 6 dB on the when comparing it. But we would have to see what you get.

Mr atmaspere,

Would love to see your system, or know what's in it.  Do you use power management in any way?

Thanks

I suspect (guessing here), that he does.
But…

Solely Inside of the amplifier.

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...

I’m a power supply guy and it occurred at a show in a discussion with Nelson, who is also a power supply guy.

But whatever the minimum impedance is for your speakers, then divide the 50V rail by that impedance… and whoo-la… we get the maximum amperage that the amp can deliver to YOUR speakers.

A theoretical (or real) 1 ohm load is the only way to get 48A.
It is quite possible that he designed it to be able to push a 1-ohm load, but that has little to with what it will actually provide in a specific use case.

I, too have read about that number in reviews...

Perhaps the reviewers could be repeating what others say, or what the specs say?

If they measured it, then it gets to be more towards facts, than being more like “lore”.

It would probably be more productive to reach out to Mr. Pass for clarification as to what it means, and what it means with a a specific speaker.
(I, and likely others, would be interested in what he says… I suspect that it means he has a monster of overkill in the power supply… which is great.)

Would love to see your system, or know what’s in it. Do you use power management in anyway?

I don’t (but have a number of customers that do). My preamp employs heavy power supply regulation, which helps out immensely, and my amps employ over 35dB of feedback and are able to reject power supply noise and also employs regulated power supplies. Both also have built-in DC blockers. Equipment that lacks that sort of feedback and/or regulation needs all the help it can get.

I did rewire the audio room AC wiring, complete with Hubble AC outlets.

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...

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 😁).