BIO-15 // 500 Watt RMS 15 Inch Car Subwoofer

I ordered 2 of these and a cheap ported box from amazon(don't do this I had to spend 5+ hours re-sealing the box) for a build total of 300 and I'm impressed. I first tried these out in my car off of my 500w amp at 2 ohms and it really didn't go well, there wasn't enough power for the both of them. BUT, I have 2 Koss 520w amps in my house so I decided to strap them together and run both of these on them and holy sheet my house is shaking, knocking stuff off the walls bad, I love em.

Not impressed

I HAVE 2 BIO 15's WIRED TO TWO OHMS ON A 2000 WATT RMS NVX (@ 2 OHMS). PORTED BOX 8 cu ft. I COVERED THE TOP OF THE BOX OVER THE SUBS SO THE BASS AND THE PORT (FACES THE FRONT) IS CHANNELED TO THE FRONT OF THE 98 WRANGLER. TOP ON OR OFF, THESE . . .SUBS . . . POUND.

Great sub. Don’t let the “bottom model” idea fool you. I have one Bio 15” running on a CT Sounds 1000 watt amp and the sound is incredible. Not a lot of content out there for this sub, but I’m super happy with my purchase. Don’t hesitate, like I did, just get it and experience it for yourself. You will not be disappointed, unless you’re going for ground shattering bass. This isn’t that, but it’s close enough and more than ample. AND, the price for it is insane. It feels as if I cheated CT Sounds out of some money lol. BUT, that is why I’ve been going with CT Sounds products for a while now. They are very reasonably priced, and perform and/or outperform other name brand products. Thank you AGAIN, from Hilo, HI

Put a pair of these in an atrend dual sealed 15 box. Play deep, good versatility and accuracy. Better than previous bio model. Good all around music performance. Maybe the best available 15 at this price point.