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“Not matching Ohm's is the biggest mistake people make. And you CAN blow your speakers or amp if you dont. Ask any electrical engineer or audio guy and they will tell you the same thing. Yes it can work...but for how long is the answer you will get. It's simple Ohm's law.”
True, but…success/failure depends on which direction you are going with impedance. Going from 2 ohm soakers to 4 ohm will not hurt a thing. You may not have optimized your system but nothing will fry with 4 ohms that wouldn’t have fried with 2 ohms.
Going other direction is a different story….
An amp rated for 4 ohm load driving loads less than 4 ohms will run hotter and most likely cut off (protection mode) until it cools.
It is ohms law. Power = current ^2 time’s impedance.
At 100watts. an amp will need to deliver over 7 amps into 2 ohms while only needing 5 amps to deliver same power into 4 ohms. Hence, an amp rated for two ohm loads will ‘coast’ with 4 ohm loads.
An amp rated for 4 ohm loads May struggle to deliver the extra current to a 2 ohm load.
Understand also that you’ll never listen to your car stereo at anywhere near 100 watts continuous. It’s too dang loud! Heck 1-2 watts is a decent volume in a closed car (or a decently sized room).
Low frequency transients require additional power but just for moments at a time.
At the end of the day, it’s a ragtop…not a concert hall!
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