Customer Ratings & Reviews

surprising.

I purchased one of these for my gf after she heard my system. I was a bit greedy and threw it in my car before she got it so I can give a review. I built a .6 cube net internal enclosure tuned to 34 Hz. I had it hooked up to my bxi 1210 at 4 ohms, giving it around its rms rating.

The sub sounds incredibly clean. Probably as clean as my mag 12. It blends seamlessly with my comps, mainly due to it's extension into the higher frequencies. I was surprised at the range of notes it hit. It never struggled with stuff over 100 Hz, and remained composed down to about 30 hz. After that it rolled off quickly. In terms of spl, its not going to rattle anything loose, but it is certainly adequate for filling in the low end for a lower power install. I would not hesitate to push this past its rated power, IF DONE SO WITH CAUTION. It has taken 400+ watts at times and it has yet to bottom out.

Overall, its a very good sub for what it is meant to do. It's very clean, very punchy, and there's times where it blends so well I forget its there. Alpine has made themselves a very nice little sub here.

Awesome! Go hard!

I bought one, I repeat one of these to put in a custom .5 cubic foot box over the hump in my 2008 silverado crew cab and DANG! This thing sounds like a quality 12" sub. Buy it and stuff it in and be amazed. I'm pushing it with 400watts @ 2ohms and it's not bottoming out.

Excellent product

This is great material and is very easy to put on with a heat gun!

Great value & sound

Simple to install, awesome prices and tech support. Thanks again Sonic!

8" type r = good value and sound

I blew my jbl 8" sub and replaced it with this beast, pounds my mr2 right good, roof mounted mirrror shakes and err thang good sub!

Best prices

These subs are awesome. The dual 4 ohm design gives you countless options when installing. The price was unbeatable.

Alpine SWR843D Product Review

Good 8" sub for the price. Only shortcoming is that it does not reproduce low frequently as well as a larger diameter sub.

Nice

Nice little subs adds good bass to system got two hooked up to a crunch cr2000.1 at two ohms getting around 400watts each and they make my 350z rattle, but I also had 1 10" L5 hooked up to the same amp and sounds similar.

Great package deal value.

I recieved this as part of a package deal. It is enough to cover the lid of my 98 Civic sedan trunk. This will clean up the sound of your lows by decreasing noise (rattles, distortion of sound, etc). This is the first step in noise reduction and everybody should start here.

I doubt it will create a noticable increase in sound from your speakers.

Very flexible, sticks like crazy! Easy to work with.

Alpine SWR-843D

Got 3 in a sealed box and i love it

Great Price and Product

I found the price great for the product I got. Installation was very easy, product sticks very well (Remember to clean/prep the surface). I noticed a difference right away in my music as well as overall noise level while driving on the highway (Doors done - trunk is next). Not the thickest sound dampening out there but it def. helps :)

Does what it's supposed to

Just remember that you are buying an 8" subwoofer and you shoud not expect the performance level of a 10" or 12" sub from such a small beast, and you'll love the sound this thing creates. Doesn't go quite as low as I'd like it to, but is amazing for its size.

Alpine SWR-843D

I got 2 and I love the sound.

The battle against rattle

Got the sound dampening door kit with some speakers, the installer put it on the rear deck of my vehicle where my two rear speakers and factory sub are. The difference is night and day, expensive but quality, good to get with speakers or a sub.

Not bad

The build quality on this sub is exceptional. It handles 375w rms no problem. That being said it lacks on lower frequencies even compared to other 8" subs. I installed this in a .3cf sealed box. Sounds decent, but would be much better ported. All-in-all a well built woofer for the money.

very good 8"

Build quality is excellent, this also is a very versatile woofer that works in a variety of enclosures whether it's sealed, ported or bandpass. Sounds great doing it which is why I would highly recommend these 8s for daily musical listening. Sonic was great on the delivery also.