A pair of Dayton Audio 15" HF subwoofers and a pair of Dayton Audio 500 watt plate amps in custom boxes for behind couch or narrow space requirement placement. $800 for both local pickup or i can remove the speakers and amps to ship for you to make whatever boxes you want for $600 plus shipping.
Located in Northern CA (Sacramento area)
Pics will be posted later today
Dayton Audio RSS390HO-4 15" Reference HO Subwoofer 4 Ohm https://www.parts-express.com/dayton-audio-rss390ho-4-15-reference-ho-subwoofer-4-ohm--295-469?utm_source=google&utm_medium=cpc&utm_campaign=pla
Dayton Audio SPA500 500W Subwoofer Plate Amplifier https://www.parts-express.com/dayton-audio-spa500-500w-subwoofer-plate-amplifier--300-807?utm_source=google&utm_medium=cpc&utm_campaign=pla