Navigation & Audio Using HERTZ Speakers in the 2009 R57 non-hifi with Sat Nav
Integral Audio:
From what you stated it appears the middle 3.5 or 4 inch door speaker does the majority of the work in the HIFI system. It seems to me that replacing that speaker alone may make the most improvement considering the factory amp equalization and crossover points.
What 3.5 or 4 inch speaker, if any, would you recommend as a replacement until you get your system to market. I assume it should closely match the factory sensitivity rating of around 89db.
From what you stated it appears the middle 3.5 or 4 inch door speaker does the majority of the work in the HIFI system. It seems to me that replacing that speaker alone may make the most improvement considering the factory amp equalization and crossover points.
What 3.5 or 4 inch speaker, if any, would you recommend as a replacement until you get your system to market. I assume it should closely match the factory sensitivity rating of around 89db.
(Also, the factory speakers are about 87dB)
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