42etus said:
I'm using a Velleman kit amplifier,
http://www.allelectronics.com/cgi-bin/item/MK-4001/search/7_WATT_MONO_AMPLIFIER_KIT_.html
to drive a 50 watt mid range speaker.
http://www.allelectronics.com/cgi-bin/item/GM-658/search/5.25"#34;_50W_MIDRANGE_SPEAKER_.html
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
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:
http://www.mpja.com/productview.asp?product=8405+KT
It requires a heftier power supply than the one you're using now, but it will
definitely make bigger sounds.
--
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.