low pass filter on amp and stereo?

[mopower440 10+ year member]

Question, My head unit has the low pass filter on it for the sub output, The amp pushing the sub also has a low pass filter on it.....do i use both or just one? If just one, which one, head unit or amp?

Thanks

Click to read more...

 

[Why So Cereal? 5,000+ posts]

One, headunit...easier to adjust on the fly.

 

[pickup1 5,000+ posts]

Can you turn your xover off at the amp?

 

[mopower440 10+ year member]

oh ya, will cut it off.

thanks all