Hey guys,

I know we run splits at 4ohm to enable a greater level of control over the speaker and therefore the sound. Is the same true for subwoofers? Is there an audible difference running a 4ohm sub compared to a 2ohm sub?

Also, is there an audible difference between mono block class D or a 2 channel bridged class AB amp for running a sub?

Thanks guys

the more power the better for all things!! just suit the subs to the amps you have and then you wont have any problems.

as for amps, try to get something efficient, usualy mono amps are much more efficient for subs

If the amplifier is designed to be run at 2 ohm or 4 ohm loads, then you will not lose any "control" over the speaker. This goes for both splits and subwoofers.

There will not be any audible difference between running a class d and a class a/b amplifier on a subwoofer. Any differences will simply be due to differences in power output.

although normally you would be hard pressed to notice any audible difference, i on more than one occasion have heard a difference in 'how' A/B class amps sound compared to D class :| i have also discussed this with a installer friend and he agreed!
the difference is very suttle and hard to discribe :? but compare something like a US Amps 2000X to something equivilant and you will probably know what i mean but its so hard to get 2 different brand amps that put out the same power exactly! and that makes a comparison hard as output has a big influence on how they sound, everyone tends to think the louder one sounds better

D class is supposed to be the lowest sound quality of all, compared to A,A/B T? or whatever others there is today! due to the fact of how they work.
the signal has to travel through a transformer before exiting the amp! its purpose is to turn the signal back into a decient looking sinewave' because the signal being produced by class d switching is quite nasty(like triangle wave). someone explained it to me once in detail but i carn't remember most of it :roll:

Each time u half the ohms the amp will run at..the distortion will go up too.

but then again..u probably won't hear the difference (its in a car after all).

The only time there will be significant distortion is if you use the amplifier for something it was not designed to do. If you expected to use a traditional Class D amplifier for a higher bandwidth application (say, a full range signal, rather than just sub bass) then yes there would be distortion as the design is not suitable for that application. The same goes with loading amplifiers below what they are rated to do.