HPF the signal to the speakers so only the sub handles frequencies below 100Hz. People will not believe the output and quality from the stock speakers in this configuration (basically you run it like a sub/sat HT system).
My headunit does this but you can use an amp that has an HPF too
Wire up the sub so it's easily removable for the 5% of the time the whole boot is needed and enjoy the full sound the rest of the time.
I doubt you can get near the quality and output from woofers that will fit + the cavity won't be large enough vs a 10" sealed sub (ported is stupid for a small car like a Polo).
Last edited by kaanage; 08-02-2015 at 10:03 PM.
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