Summary: If you already have/ plan to purchase 8in or larger speakers then you will not need this item and will gain nothing. Now, if you have the minis or 3/4/5/6 inch driver speakers/satellites then you will benefit from improved bass and crossover if wired thru this unit.
Summary: Very nice passive outdoor sub. Could probably use a separate amp, but still sounds good. I use it under my pool deck alongside my GS5 minis which provides a well rounded out sound for my whole backyard.
Summary: Speaker came with a crack in the bottom and pieces floating around in the case. as for sound never used speaker due to material floating around in case. my luck it would be a piece of metal and it would short out amp.
Summary: This speaker filled the low frequency void in my 70V outdoor audio system. I coupled it with a 60W audio transformer (purchased separately) and it worked perfectly! It accepts both a Left & Right input, and trying to find out from TIC support as to whether I should choose the Left only, Right Only or both for my mono input was difficult as the telephone support wasn't working - so it had to happen via email.