Earthquake Sound SWS-8Xi 8-inch Shallow Woofer System Under-the-Seat Subwoofer, 2-Ohm (Single)

Simply replacing the stock subs in a Hi-Fi system makes a huge difference. Now subbas is present even without adjustments in bass menu. Finally I'm enjoying my car's sound!

I paired these up with the JL Audio xd600/6 crossed at 120 hz and it is pure audio bliss. The bass is thick and rich. Is not club style throbbing bass for EDM, but for rock, funk, disco, soul, it is excellent— tight, articulate and powerful. Everybody who I demonstrate my car audio comments on how clear and tight it sounds and I get immense enjoyment from listening to it every day. The only thing to be aware of is that as other people have commented, you need to be prepared to creatively make the area on top of the subwoofer provide an inch or so more clearance for the subwoofer to move back-and-forth without hitting the grill. I accomplished this by putting a piece of wood as a spacer on the two sides of each subwoofer and then getting extra long 2 inch screws to screw the grill back in. It is completely not noticeable after closing everything up because this area ends up being entirely under the seat.

Installed this on my bmw i4. Great quality sub. Easy install . Sounds way way better than stock . I can hear some bass in my system. I have the HK system in my car. Can't give this sub enough props!

The rings that come with it are made of cheap fiberboard and break really easily. What a waste of time

"Almost" a drop-in sub for my BMW. Just had to shave a few items down in order for them to fit. Simple enough though. No real cutting or drilling to make these work. Good Stuff!

Purchased these to replace the under seat subwoofers in my BMW 550i. The description for these speakers is as follows: "Designed to replace the BMW factory speakers that are located under the front seats, the SWS-8X requires no modification. Simply remove the seats and replace the factory woofers with the exact-fitting SWS-8X woofers to improve the sound quality of your mobile audio." HAHAHAHAHA! Yeah, right! Installing these is a royal pain in the backside. With the existing contour of the enclosure, you need to remove all of the partitions to accommodate the depth of these speakers and that's still not enough. I added weather stripping around the lip to raise the speaker enough for installation, and as a preventive measure for rattling. Another pain is, which is not mentioned, you need to purchase a separate installation package is sold to wire them which involves cutting the existing connection off and installing spade connectors for attachment. I had good speaker wire and went to the local hardware store for the connectors and saved myself $40. The least they could do is include the spade connectors...... Once installed, these speakers, paired with the Bimmertech PP82DS, perform well and provide the boost I was looking for.

This subwoofer sounds great. It has a lot of bass and one would think I have 10 or 12's in the trunk. But with any BMW if you do not have ski pass-through or fold down rear seats you can not hear a sub in the trunk to well. This is the best design under the seat. I have it connected to a JL AUDIO XD4004/4 . Getting the sub enclosure out from under the seat was a pain because the carpet is so thick with sound deadening. You also have to cut some of the inside of the sub enclosure it is plastic and all you really have to is grab it with a pair of pliers and twist it off you do not need a dremel. Her is a link for a PDF of instructions as well as pictures.http://www.e90post.com/forums/showthread.php?t=163804. Also there is sites that have all the wiring but just remember any wire with a brown strip is negative.

I am very happy with these speakers. The OEM subs made low frequency noises, but these speakers really deliver the full, low bass that I was looking for. I am using them with the Bimmertech amp. For installation, I used the spacers found on Amazon. I also got a set of connectors that mate with the BMW ones to eliminate wire cutting. Search the web for 1719093-3 B. Also, when installing, it is not necessary to remove the plastic bass enclosure as is shown in some helpful videos. After tilting back the seats and removing the grills, I just removed the OEM speakers and put these in place. If you watch the videos and have the correct tools with you, the whole project is pretty quick.

So happy to have made the upgrade, now i can finally feel the bass in my seat. Most definitely worth it.

For increasing base level