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136 posts

Master Geek
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Topic # 189477 31-Dec-2015 15:36
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Hi there so today I went and got myself a Sony MEX N4150BT but when I was there I was looking at the Sony MEX N5150BT too. The only difference they told me was the the 4150 was a 2 pre out and the 5150 was a 3 pre out. What does that mean and how will if affect my car audio? The car had a stock audio system atm (2004 or 2006 Toyota Corolla runx)

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5122 posts

Uber Geek
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  Reply # 1459571 31-Dec-2015 16:17
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2 pre out is used for front / rear or rear / sub if running external amplifiers.

With 3 pre outs you can have front / rear / sub all at the same time.

Either is no use whatsoever if you just run the speakers off the head unit and don't use external amplifiers.

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