So im using this 19v 4.74A laptop charger to power my amplifier which is rated for 12-24v 5a but my concern is if there's a difference between a laptop charger and a a proper 24v power supply and i might be damaging my ampli in the long run

 

hi Papi,
It should be OK, old Laptop PSU's are used on many projects.

E

 

my concern is if there's a difference between a laptop charger and a a proper 24v power supply and i might be damaging my ampli in the long run

I'd be more concerned about it being rated at a current lower than what the amplifier specifies.

 

I use them on all kinds of projects.
Most audio amplifiers use very little power when the volume is down.
4.74 is almost 5A.
If you use the lowest resistance speakers (2 ohm) and pound the base so the neighbors can hear, maybe you will use the full power. Without knowing much more about the amplifier we can't know what the current might be.

 

"For use with information technology equipment only" printed on it.
Because an amplifier makes a huge squealing noise when powered from it? Because it causes an amplifier to produce swearing?

 

It is almost certainly a bridged class D amp. At 19V, the most current you can get into an 8Ω speaker is 2.3A, 4.6 for stereo. real power usage for music will not be anywhere near that high, so, if you stick to 8Ω speakers, you should be okay.

 

"For use with information technology equipment only" printed on it.

DC power isn't DC power? Because the cops will arrest you?

It's probably a better switching power supply than most; there's no reason to assume the worst. It might be noisy, it might not be, but it's not going to cause any damage.

 

If an amplifier volume control is turned up too high so that it is clipping or if you play acid rock noises (same problem) then the amplifier current can be double its rating and cause this 19V, 4.74A (90W) rated power supply to catch on fire.

 

If an amplifier volume control is turned up too high so that it is clipping or if you play acid rock noises (same problem) then the amplifier current can be double its rating and cause this 19V, 4.74A (90W) rated power supply to catch on fire.

The switching power supplies I have tested have shown a remarkable self-preservation instinct. When their rated current is exceeded, the voltage falls remarkably. Sorry, no fire, flames, smoke or damage.

 

Then why do they say, " For use with information technology equipment only"?

 

I've used many power supplies stating that without problems. If you claim they will catch fire, please provide some evidence of your wildly inaccurate claim.

 

I've used many power supplies stating that without problems. If you claim they will catch fire, please provide some evidence of your wildly inaccurate claim.

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I guess You haven't noticed that the Thread has become quite facetious.
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I guess ite facetious.

I guess You haven't noticed that the Thread has become quite facetious.

Nope, just the usual misinformation as far as I can see.

 

I guess You haven't noticed that the Thread has become quite facetious.

Nope, just the usual misinformation as far as I can see.

 

Then why do they say, " For use with information technology equipment only"?

Hi agu,
It just makes the buyer think he's getting more for his money. ie: eye Candy.

As Sigmund said: sometimes a PSU is just a PSU.
Surprised you fell for that one.

E
Edited.