I'm using a Velleman kit amplifier,
to drive a 50 watt mid range speaker.
At higher levels, it cuts out. I'm thinking that this is overloading the amp. Can I simply put a 2nd amp in parallel with the first one to provide more power to the speaker. If not what is my best solution? TIA, Paul
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First, what do you mean when you say that it "cuts out"? Does the sound completely go away, or did you mean to say that it is very distorted?
Regardless or the answer to that question, in answer to your thought about paralleling two amplifiers, no, you can't do that, at least, not easily. You could build a signal inverting stage, put that inline with an identical amplifier, and connect the speaker to the outputs in a bi-amp configuration, but I suspect that you're probably not experienced enough in electronics to attempt that.
You're driving an 8-ohm speaker with your amp, which means that it can only deliver 2 watts into the speaker. If your audio level going into the amp is too high, then all bets are off. You can't continue to operate a device beyond its specifications and expect it to perform without repercussions.
Is your power supply to the amp capable of powering it to full sustained output? Check the voltage to the amp while it's operating. If the voltage is varying considerably (more than 0.5V or so), then you might consider getting a power supply having more current capacity.
Overall, the answer to your problem, if you want higher volume, is to get a more powerful amplifier, such as the one here:
-- Dave M MasonDG44 at comcast dot net (Just substitute the appropriate characters in the address) Life is like a roll of toilet paper; the closer to the end, the faster it goes.
what sort of sound are you trying to reproduce?
That lousspeaker doesn't do low frequencies (bass) at all well, and if you're trying to play a signal with any amount of bass it'll only work at low amplitude,
This one might work better:
Or if you want to avoid the hassle and go with a pre-built solution:
you don't have to use them on computers they work just fine on other audio devices too.
Bye. Jasen
$11.95? FFS, what do you want for that money? Dump it and buy a proper amp if you want better performance. Jeez, that's like 6 pounds in England. The price of a cheap bottle of fizzy wine. I suggest you save some more pennies, and buy a second-hand hi-fi amp, or a bigger kit amp.
I'd rather thave the wine.
No, you can't (safely) parallel those amplifiers.
Martin
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