I put Polk 2-ways in the dash and replaced the four rears with new 3" - all the originals had damaged or missing paper cones. Looked in to replacing the door subs too, but it seemed a lot of work, so I replaced the M680 DSP and 6X40 Haes amp with a Polk 5-channel 75X4 & 150X1. Amazing difference in sound, and more work than I anticipated. I have tuned the rears so they don't just provide fill. The 5.25" subs with this amp really do provide sound now. This with the top up. Top down hopefully tomorrow.
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2000 Boxster S
2010 Volvo XC60
2011 GMC Denali HD 6.6L (sold)
2008 Cayenne S (sold)
1989 Targa (sold)
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