Alphasonik 1 Pair of NS275 Neuron Series 2.75" (180 Watts Max for The Pair) 90 Watts Max Per Speaker Full-Range Car Audio Speaker with Paper Cone

This was exactly what I needed. The specifications of the speaker match with my amplifier very closely. Installation was a breeze. The sound quality is immaculate.

So I have had my 8" JBL GTO804 running off a Rockford Fosgate P2.200 bridged 4ohms @ 200 watts RMS for about 2 months now. This system is not in my car, its for my bedroom. I have the amp running off a Rosewill PSU, paired with Klipsch KG4.2 running off a good ol' Yamaha receiver. I built my own box for this sub, not using the recommended ported enclosure. I designed mine using the 12volt.com subwoofer enclosure/port calculator. I have my enclosure tuned @ 35hz with .66 cubic feet of volume (including port/sub displacement). This sub in this box sounds amazing, great for all types of music, I mainly listen to dubstep, rap, R&B and pop. Very good sound quality from such a small sub. This sub in my enclosure moves quite a bit of air. Its got a 2" x 10" port. I threw a bag at the port while playing Bass Ballin - Bass Mekanik and the bag just stayed floating around in the port. For the price I don't think you can find a better 8" subwoofer. My friends got a Rockford Fosgate P1-2x12 and I could say this 8" is comparable to one of his 12's. Great hard hitting subwoofer, very clean, great SQ and efficiency (you don't need a lot of power to get this little 8 loud). One thing i was surprised at was that this has 11.5mm of Xmax (excursion) this is more than a Rockford Fosgate P1 12 (new model). The RF P1 12 has 9.4mm. That's embarrassing. Overall, I would highly recommend this subwoofer to anyone especially if you are tight on space. Not only is this subwoofer compact, but it can get pretty loud and sustain SQ!! Mine never distorts and i do crank it... trust me. Gets really low too ! AMAZING 8!! I will be saying good bye to this jbl gto804 in January 2013 though... I have pre-ordered the Sundown Audio E8v3, will be selling the JBL to my friend cause hes going to put 2 of these ported in his Millenia. GREAT SUB! SIZE DOESNT MATTER LOL. Just buy it !

If you have an 2002 era Ford Expedition and can get the stock sub out without damaging anything, you should be able to make the modifications to install this JBL sub. Dont forget to take out the screw from the rear of the sub box which secures the magnet. As another review mentioned, you do need to hack out the recessed area of the sub box (on the rear side) to allow for the depth of the new sub. I bought a flat piece of HVAC flashing, 10 screws and a tube of caulk to patch the hole. I rotated the new sub slightly to allow me the sub to be secured with new holes. The old ones will not line up. I added a 12" jumper from the sub to the stock speaker connector to the amp. Rather than using the gasket that came with the sub, I chose wider 3/8" sticky window foam insulation which works better (it is more forgiving).Another reviewer made the comment that making a spacer on the front of the enclosure rather than cutting out the rear. I thought about it, but decided patching the hole would be easier than making a properly fitting spacer. Now that I'm done, I still believe the patch route was easier (but the spacer was a good idea).Phase does not seem to matter with the amp. The Mach Sound System schematic (which I found somewhere on the internet) only acknowledges 2 wires going from the amp to the sub, but does not designate with "+" and "-".Performance: This sub is very highly rated (with and without the stock amp). The bass is deeper and richer, but the problem is there just isn't as much of it (at least from the drivers seat). The other seats all seem better. There is more bass outside the car, but that is a negative from my point of view, as I don't get my jollies from thumping my fellow drivers.Perhaps an aftermarket amp will improve the bass, but it's good enough for now.

The media could not be loaded. Amazing Speakers for the size. The sound is extremely good for this size of speaker with 30 watts RMS running to each speaker.

I just installed two of these in my neon in a vented box connected to a 15 year old 1000w legacy 4 channel amp bridged into two. They are running at 8 ohms as my amp will not run at 2 ohms. These subs replaced two older legacy 10", 450w. One of these blows both of the legacies away... And I'm only pushing around 65w rms to each. I also have two 12" Kenwoods in a bandpass. They are still no comparison for these pioneers. Love this product. Definitely worth the money.On a side note, I just ordered a Crunch GPV3500. (Can't wait to get it) :) Will post back to inform you of how they handle this kind of power.Update: After getting these connected to the new amp, I'm not overly impressed. They put out a ton of bass for a ten, but I would highly recommend spend a few more dollars for the Alpine SWS-10D4. Here's why:Pioneer:350wxmax:12mmxmech: 34mmAlpine:500wxmax: 17mmUpdate: These subs have a long break in period. They will continue to get louder for two months. I have them in a vented box 2.4 cf tuned to 37 hz. These things put out an incredible amount of bass for two tens. When they're turned up you can't light a lighter in the car... The pressure in the car prevents it from lighting. Lol. I actually bought these for an ib set up. Pioneer says they can be used in this application... They do work but not very well. You'll get better sound for far less power out of cheaper subs like pyle or pyramid. But vented, they are awesome! Just make sure you have at least 300w RMS (not 300 advertised watts) lol.Bottom line; certainly worth the money... Pioneer speakers usually are. ;)xmech: 64 mm These Alpines are capable of almost 3" excursion compared to these pioneers' 1.5.