About 10 years ago I bought 2 DBX 15 inch subwoofers from DAK surplus in Elay. They had a store in Canoga park that looked like a thrift store with remainders and slightly damaged wares. Some of the oldtimers here may remember DAK's mail order catalogs. BTW, DBX was an early competitor to Dolby. Well they had a couple of the 15 inch subs and the price was $50.00 each but the sales guy said I could have 2 for $75.00 so what the hell. I bought only one SAE sub amp/xvr for another $25.00 and wired one channel to each sub and ran that for years. That was 10 years ago. The SAE crapped out. Don't ask! (I set it on the plush carpet behind the speaker vertically with the cooling fins buried in the carpet.) I recently bought a surplus 250 watt Audiophile Sub Amp and I am happy with the performance. Ok is there a question here? Yes. I am using both subs as a speaker stands for my 2 ways but only one is active. Should I buy another amp and run both? Or give it to one of my sons. I've been told the two will couple at 8 to 10 feet. Will my neighbors mind if I do? I am 63, slightly deaf and listen mostly to string quartets, quiet laid back jazz and Metallica.