car subwoofer filter 48 db/octave

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36 dB/octave HP filter

in the end I bought a old school MTX crossover for 20 euros and modified to my liking ... I added a HP filter 72Hz 24 dB/octave in series whit the MTX 12 dB/octave filter and I'm quite peased whit it's performance till now ... I toke the short way out :))

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