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can a 100 watt transistor amplifier run a 200 watt cab

Posted: Sat Nov 20, 2004 6:38 pm
by johniss0001
Hey guys howz it hanging long time no chat hows the plexi army doing?
I was wondering could a 100 watt transistor amplfier run approx 200 watt cab as i have fitted a new driver to it and want to brake it in.

Posted: Sat Nov 20, 2004 10:28 pm
by rjgtr
Yes

Posted: Sun Nov 21, 2004 8:22 am
by johniss0001
thanks for the advice but i have a concern won't the speaker be harder on the amp because it is taking more power from it?

Posted: Sun Nov 21, 2004 9:22 am
by tooloud
the speakers don't demand 200 watts that is just the max they will take.

Posted: Sun Nov 21, 2004 11:55 am
by flemingmras
That's just the max they will take going through them John. The amp can only supply so much power, after it's feeding all of it's power through the speaker(which happens at full volume), it cannot supply anymore power, so that theory of yours would be like squeezing water from a stone.

However, the IMPEDANCE(ohms rating) is going to control how much they draw. This is why amps have a minimum impedance rating. Lets say your amp is made to take a minimum load of 4 ohms. This means do not put anything lower than a 4 ohm speaker on that amp. This is because a speaker with a lower ohms rating than what the amp calls for WILL try to draw more current, or rather the current on the output will see an easier path to ground since electricity takes the easiest path and the ohms rating is too low, and to the amp it will be just like a short circuit on the output, which will fry your amp's output section.

Hope this helps.

Jon

Posted: Sun Nov 21, 2004 4:45 pm
by johniss0001
flemingrass and others thanks for your help i knew my amp would be suitable to do this but my dad warned me about trying it incase i fried the whole out put section on the amp. The impedances are suitable for the amp as well.

Jon we should chat sometime on msn messenger or yahoo msnger it would be awesome!