When choosing a subwoofer take into consideration
where it will be placed, how it be installed, the amount of space you're willing to give up for the box, and how much power. When you decide those things you'll know what Sub to buy (or at least narrow the selection).
I believe the AccuClass-D is a Class-D amp.
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Good things about amp;
1) digital technology allows for a greater signal voltage input (8.5V)
2) has time correction built in
3) subwoofer phase control built in
Bad things about amp;
1) it unfortunately ony has a 90dB S/N ratio
2) It also uses a digital low pass filter which is a bad idea for low frequencies
3) parametric eq is only selectable in +2db steps
4) really high current draw due to all the "features" the amp has
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Others will have a different opinion than me, but the choice should come down what is the amp going to be used for.
