Autospec, I still have a pair at home and i did place a 1 inch thick foam covered the inside bottom area and alas,i am getting more deeper bass.Btw be carefull not put a lot.Just try it and you will see what i am talking about.Good luck.
There are a few folks I know and are absolutely outstanding. I myself have upgrade the KLF series and some Heritage models. I can do just about any Classic crossover network also. I also do other speaker brands also like Polk etc.
Email me at mvansloten@gmail.com if you're interested.
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