KLIPSCH R-112SW with upgrade to R-115SW plate amplifier

I've a used but repainted and upgraded R-112SW. Repainted with black paint to cover some scratches and also upgraded the plate amplifier to a R-115SW 400W plate amp (extra 100w of power over the regular R-112SW). Power is monstrous and the bass is deep strong. Selling on Amazon for $510 plus tax ($550). I'm selling for $400 or best offer.  Happiness is Copper and Black Heart-pounding, deep and beautiful - Klipsch subwoofers let your guests know you're serious about your home theater. Your friends will be jealous, your neighbors will be enraged. Get ready to be moved. The Reference R-112SW subwoofer lets you feel the impact of your favorite music and movies rather than just hearing them. In fact, its rich, full deep bass will shake you up as soon as you push play. Features 12" Cerametallic woofer All-digital amplifier delivers 600 watts of dynamic power Front-firing slot port with exclusive internal flare technology L/R line-level/LFE RCA inputs Brushed black polymer veneer cabinet with satin painted plinth Spun Copper Front-Firing Cerametallic Woofers Cerametallic woofers are exceptionally light while being extremely rigid - providing remarkable low frequency response, with minimal cone breakup and distortion. All-Digital Amplifier The built-in all-digital amplifier delivers ample power with high efficiency and true-to-source accuracy in reproduction. Front-Firing Slot Port With Internal Flare Technology Proprietary internal geometry that minimizes port noise for clean undistorted low frequencies. The front-firing design allows for placement flexibility. Low Pass Crossover and Variable Phase Control Low pass crossover and phase control allows you to blend the subwoofer's low-frequency tones with other Klipsch speakers as well as establish the ideal level of bass. Get a smooth, even dispersion of bass that suits your room size and layout. Cut The Subwoofer Cable Powerful bass is one thing, but powerful bass that can be placed anywhere in a room to achieve...