Earthquake Sound SWS-6.5X 6.5-inch Shallow Woofer System Subwoofers, 4-Ohm (Pair)

I bought these for replacement speakers for my harley. To my amazement they sounded better than the original speakers that were in it. The sound is much clearer and better bass. A+++++

These are good woofer replacements for doors. Be sure to get low pass crossovers. They take a week to break in. First day not much bass. Second week these kick in. Lots of strong bass. Also, be sure they are sealed around surface mounting area.

One of the subs did not work out of the box, I check connections and the amp and nothing, the one that works sounds great but the other being messed up has left me very very heated.

This is my second set. I sent to much power in the first set and have since changed the amp they’re on. I was running 150 to each and honestly they didn’t handle that for too long. I’ve since switched over to my 55 w a channel and it’s perfect for my jeep. I’m not wanting people to hear me coming from blocks away. These fill the mid bass area quite well. Impressive sound with just 55 watts running them. Def recommend them just watch how much power you run to them.

They add bass but it's boomy. We made small sealed boxes stuffed with poly fill. They are under the front seats in our 2016 JK Jeep Wrangler Unlimited. They are both powered by (1) Pioneer GM-D8601. They do add missing bass but they have a very boomy bass response. Modeling them in a free program called Winisd, in their ideal sealed box volume, they have a 3db peak between 50 and 60 hz. No matter how I alter the box volume in the program there is no way to get rid of this peak. Using a better double din car stereo like the Kenwood DDX774BH you can reduce some of the excessive boom-iness using the equalizer. Our not ideal small boxes have about a 5db peak which makes everything sound excessively boomy. We just moved our DDX774BH to our daily driver and put the DDX272 back in the Jeep. The Kenwood DDX272 lacks the better equalizer so we had to turn the subwoofer way down to alleviate the boom-iness. We have had them in the Jeep for about a year and they are still going strong. Pros: +Affordable +They add more bass than any normal car speaker can +Play plenty loud with clean power Cons: -Boomy

I installed these in the back doors of my Tundra as there was no place to put a box. Amazing sound for just 6 1/2" drivers. They go deeper and produce more bass than I expected. They do want baffles behind them.

Not bad. These are in my fairing lowers in my 2007 Harley Electra Glide Ultra Classic. The shallow mount is great for the little space in the lower fairings. I'm powering them with a mini Kenwood amp. They sound ok... They do the job to add sound to the bike.

I have run these on my Harley for over a year…they are great! key takeaways; buy the metal spacers, much more stable; check your gains at 50hz, 20v max, these are 100w RMS speakers; set your LPF and HPF slopes correctly! These are NOT 1000w subs!!! They will fill in that bottom end that most speakers can’t in small spaces, the laws of physics apply, these get you close to violating them!! I cross them at 50hz 18dB slope, and 400hz with a 24 dB slope, keeps them in the happy zone, powered by a FLX-1000. Price to performance cannot be beat!!!

They sound amazing for the size

Incredible sound and a super smooth bass line Coming from a 6.9 subwoofer. Very impressive Thanks

Bought 2 pairs and each pair had one with a defective voice coil which rubbed internally creating an undesirable rattling sound. One of them even had a dent in the aluminium frame. On the upside, if you're lucky enough to get 2 good ones, they'll sound amazing!

Replaced the front drivers in my 2017 mustang. Hoping to get an improvement in the bass response but that didn't happen. They sound OK but considering they are meant to be subs they don't generate any more bass than the cheap and nasty factory speakers

Great sound.