Unknown device

Asked by Jun 01, 2017 at 08:10 PM about the 2015 Mitsubishi Lancer Evolution MR

Question type: General

I have a device in my car thats wired and it says
freqency and rev and normal and has a button to
it,dont know what it is

4 Answers

205

I believe that has to do with the audio.

I dont know,why does it say rev?

205

Yes, that device is like what controls the audio. "Rev" stands for reverse, it is in every car. What "rev" does is that it flips the polarity (-/+) of the Sub relative to the rest of your speakers. This essentially puts the sub 180 degrees out of phase.

Thanks bro

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