I think, I assume Howard416 means this graph:Which transfer function graph do you mean? Please share a screenshot
I think, I assume Howard416 means this graph:Which transfer function graph do you mean? Please share a screenshot
I rather compare this with other amps.@Music1969 Many music lovers and members of the forum are confused by this graph... Although I just can’t catch these distortions by ear. Compared to other amplifiers. Maybe the ears aren't the same anymore. I'm getting old.I'm just over 60 years old.
Yes it is not as clean as this one below but you have to pay more $ (this is the reliable model not the Discrete model with problems)@Music1969 Many music lovers and members of the forum are confused by this graph...
The one from the OP in this thread:Which transfer function graph do you mean? Please share a screenshot
You mean *harmonic* distortion of signals... is inaudible.Of course, distortion of signals above 10kHz is inaudible, since the first harmonic is already 20kHz.
correct, but being single frequency (at a time) test, that test pretty much only has harmonic distortion.You mean *harmonic* distortion of signals... is inaudible.
I understand. What doesn’t make sense to me is that in what seems to be every other case, an amp that does not test well in those sweeps does not do well in the multi tone. But this one does.correct, but being single frequency (at a time) test, that test pretty much only has harmonic distortion.
Not sure I've seen that - do you have a specific example?I understand. What doesn’t make sense to me is that in what seems to be every other case, an amp that does not test well in those sweeps does not do well in the multi tone. But this one does.
Hi all, I'm trying to use a PA3s in my car, and I'm wondering if I am okay to feed it DC 24V instead of the original PSU's 26V.
I can think of below 4 options if I do that. Could anyone give me an advice?
a. It will work normally with a slightly less(something like 24/26) peak output. No harm will be done to the amp.
b. It will work but it will damage the hardware.
c. Nothing happens. The amp wouldn't even turn on.
d. The amp will catch fire or explode.
For any other case than 'a', I'll have to buy a 220V AC inverter which I don't really want to..
I would appreciate your opinion very much. Thanks!
Is your car's battery voltage 24V?Hi all, I'm trying to use a PA3s in my car, and I'm wondering if I am okay to feed it DC 24V instead of the original PSU's 26V.
I can think of below 4 options if I do that. Could anyone give me an advice?
a. It will work normally with a slightly less(something like 24/26) peak output. No harm will be done to the amp.
b. It will work but it will damage the hardware.
c. Nothing happens. The amp wouldn't even turn on.
d. The amp will catch fire or explode.
For any other case than 'a', I'll have to buy a 220V AC inverter which I don't really want to..
I would appreciate your opinion very much. Thanks!
My full expectation would be a, with aprox 0.7dB lower output.Hi all, I'm trying to use a PA3s in my car, and I'm wondering if I am okay to feed it DC 24V instead of the original PSU's 26V.
I can think of below 4 options if I do that. Could anyone give me an advice?
a. It will work normally with a slightly less(something like 24/26) peak output. No harm will be done to the amp.
b. It will work but it will damage the hardware.
c. Nothing happens. The amp wouldn't even turn on.
d. The amp will catch fire or explode.
For any other case than 'a', I'll have to buy a 220V AC inverter which I don't really want to..
I would appreciate your opinion very much. Thanks!
No, it has only 12V. But I can easily find a laptop charger that can be connected to a cigarette lighter jack. The problem is, they only support up to 24V - couldn't find anything higher.Your car has a 24V outlet/supply?
Thanks for your reply. It's 12V and I explained further in my response to restorer-john just above.Is your car's battery voltage 24V?
The PA3s power supply voltage can be used up to 26V, but as the engine speed increases, the battery terminal voltage may exceed 27V.
Well, I don't think the amplifier will be damaged, but please check the rise in terminal voltage with a voltmeter.
Also, be sure to connect the amplifier's power source directly from the battery terminal. Otherwise you will suffer from generator noise.
I appreciate your opinion. The risk seems very small, so I'll just do it this weekend and let you guys know how it went.My full expectation would be a, with aprox 0.7dB lower output.
If it were mine, I'd be sufficiently confident to just do it - while accepting the very small risk I am wrong.
I can't see any way b or d would happen.
EDIT - and taking note of @Toku s warning - the main chip has an absolute maximum rating of 27.5V beyond which it can be permanently damaged. You need to be sure that voltage is never exceeded - including from surge/transient conditions.