inputs.text: great quality - package received undamaged mint condition works well expected maybe better complaint product listed model mrpm1000 model received mrxm100 upon research found mrpm1000 no longer available alpine exact specs except mrxm100 adjustable subsonic bass filter mrpm1000s subsonic bass filter fixed 15hz dimensions slightly different well added amp existing mrpm1000 not symmetrical would like amps paired alpine type x dual ported box set subsonic bass filter 15hz match sound amazing please change itehem discription match product