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Old 12-02-2016, 01:34 AM   #8
thom4782
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Join Date: Sep 2010
Location: Foster City CA
Posts: 1,099
it depends on your sound quality goal. If today is 'fair,' adding rear speakers will improve to 'good.' New dash/door speakers and a 5 channel amp will move you to 'very good' with the 5th channel driving the speakers in the doors. A high end head unit and sound deadening in the doors and dash will move you to 'excellent' after time alignment and a lot of additional fine tuning.
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