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Old 4th May 2011, 02:25 PM   #1
kubeek is offline kubeek  Czech Republic
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Default 4ohm vs 8 ohm

Hi, im am designing an amp for bass combo, and I would like to achive 750W. This lead me to choosing between 750W into 8 ohm and limiting for 4, or having 750W into 4 ohm and less into 8 ohm.

From this I realized that since I am building a SMPS for it as well, I could create double rails and let the user switch which speaker he is using.
What do you think about this?
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Old 4th May 2011, 03:30 PM   #2
luka is offline luka  Slovenia
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if you go with class D amp in the first place, you need supply that will make what you want into 4ohm.
I guess if amp is AB, I would still do the same
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Old 4th May 2011, 04:56 PM   #3
kubeek is offline kubeek  Czech Republic
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Exactly, that is why I will use 2x42 with high current and additional 10V per reail for a little lower current.
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