X84SWS Shallow Woofer System

I have installed a lot of stereo systems, so I know a good sub when hear one, and subs this size generally dont really fulfill the role of "subwoofer" very well. These outperform any 8,10, even some 12 inch subs! The designers knew what they were doing when they came up with these. The bass is impressive, tight, controlled, and not boomy under heavy power. I definitely found every loose panel, screw, trim piece. These are worth every dime.

What you get in the box .... speaker, spacer with wiring and a trim ring (which wasn't necessary in my application.) Yes, you must cut the factory speaker connection. But the spacer ring makes the wiring easy. Just trim about 1/2 inch off the wire shielding, push down on the buttons, and insert. Set speaker into hole on top on the spacer ring and screw into place. No carpet trim was required. Replace factory cover. DONE! While the fit is great I'm not 100% sold on the cost. I've had other subwoofers with more boom for less money.

Phenomenal like night and day . They need a break in point but after … perfect.. it quite plug n play u will need to snip some wires, and some stripping. It after that it’s simple.. took me a hr self install

Sound great. Have a 400w amp supplying power. I had the Hi-Fi system and these easily outperform.Easy to replace. Make sure if you are snipping wires to cut as close to plug to leave room to strip and plug in. Have to remove all the plastic covers on the seats before unbolting and tilting back. I did not disconnect my battery while tilting the seats.

Replaced the factory HiFi subs on my e92 with these. At the same time I also replaced it with 700/5 amp and boy I had no idea this car could produce these sub tones. The stock subs can't really do much of anything at all so these are a must. For HiFi users, you'll want the 2ohm subs if using factory amp or 600/6 amp. If using the 700/5 amp you'll want the 4ohm ones bridged to 2ohm mono. Hope that helps.

Install is straight forward other than the fact my stock speakers had 4 wires. These need to be bridged together and shoved into the speaker terminals which was some work. I installed them into the stock under seat speaker boxes they fit perfectly. Overall very good, they fit perfectly and sound really nice with the stock amp, worth the money for sure.

sound better but not sure I would order again

Like most others with an E60 BMW with Logic 7 the bass was never punchy and overall flat. I installed the Earthquake's over the holiday and am beyond happy...Although I am far from an audiophile Boston to Pavarotti sound like I am sitting in concert. There are scores of people on the BMW forums that mention adding a dedicated amp to drive the subs, but, honestly these have made such a dramatic difference i would like to keep my low frequency hearing in my old age. Additionally, the cost savings over BSW and AlphaOne's is enough to have a nice dinner out. It is great to see a USA logo on a product that provides constant fulfillment/enjoyment. Thanks Abraham. If you are even remotely considering a BMW sub upgrade do not hesitate. Install the Earthquake's. FYI, the BMW installation rings are included so no need to buy them separate. This is not mentioned on the box or in the product info - so hopefully this will save someone a return.