I have two on a a Autotec 2000. In a obcon transmission line box firing forward into the cabin with memory foam around the box sealing it from the trunk, sounds amazing almost to loud. I have had panels come loose and had it metered at 141.2 db's.

I picked up 3 of these and they slam. Have them in a custom box .90 cubes each sealed. For a "budget" sub I can tell you that this series will give you a good mix of SQ and SPL. You will easily pay more for some other brands to get the same performance. All 3 are powered by a Rockford Fosgate Power 1000bd @ 2.67 ohms and it gives them what they want. I heard on a forum somewhere to stay away from RE because these got outsourced to china but don't worry about that. The quality is solid with a beautiful chrome magnet. Out the box the suspension is very stiff. I think it will need a bit of a break in to get more excursion. This is a good buy and I recommend this sub.

I've been in car audio for over 15 years and these are great subs. Sound quality is comparable to JL and slam better than Kicker. Can't beat it it for the price. 2 of them on a RE DTS 1000.1.

I was looking for a budget friendly solution to adding some bass to the factory Mach 460 system in 2001 Mustang GT. Normally I deal with only SSA, Sundown, Fi, or Skar "boutique" type subwoofers, but since fitting any kind of aftermarket sub/amp combo in the miniscule trunk space a Mustang afford you, I decided to go with less power, but more cone surface and ordered 4 of these RE Audio SRX12D4 12's.

Porting them was out of the question without a rear seat delete, which I did not want to do, so I instead went with a sealed enclosure with 1 cube per sub setup. Thus far, these subwoofers have not disappointed. Clean punchy bass for rock, and they also hit the lows well for hiphop/rap. Very pleased thus far with these subwoofers performance. I would definitely recommend them for anyone who is tight on space, doesn't want to spend a ton of cash, and can power them without having to do the big 3(although recommended). Right now I am only pushing 1000 rms @ 2 ohms to all 4(250 per), and they really have outperformed my expectations. Very pleased, and would recommend this subwoofer.

Always smart with these budget subs to take it easy on them for a couple weeks as the suspension softens. I suspect as the suspension softens the output will increase. 18mm of xmax on a 300 rms sub is quite an impressive number. These subs do not disappoint in a properly sized sealed enclosure. I can only imagine their output in a vented enclosure would be equally as impressive, if not more.

I cannot comment on durability as I've only used them for a week or so. One negative on the design is the voice coil terminals. They are a screw type, not the push terminal. A minor inconvenience that really doesn't affect performance, but would rather not have to break out the allen wrench to wire the coils, so I knocked a star off of Features and Ease of Use. All in all, very pleased with this budget subwoofer.

Bought these to replace a Rockford Fosgate R2D4 12" sub that sounded great, but didn't last more than 6 weeks. Thought that by cheaping out on a sub with all great reviews that I couldn't go wrong and I'd get something that sounded great and would last. First off, the Fosgate sub sounds far better musically speaking than the RE. Second, the Fosgate sub hit way harder. The RE sub sounds loud, but just doesn't move enough air I guess, because I can feel the bass from my midbass drivers in the door stronger than I can feel the RE sub. I will say the RE sub seems to pick up the lower notes a little better than the Fosgate sub, Thats the only strong point I can name from my experience.

The RE sub was installed in a .7cubic ft sealed box, right inside the .5-.75 range listed on the specs for optimal performance. I tried it first just in the box. After the unimpressive performance, I took it out and put a thin layer of polyfill around the inside of the box. Reinstalled and it did sound a little cleaner, but not really louder.
If you are doing a ported box, it might be a different story, but for a small sealed enclosure, I wouldn't recommend this sub to anyone.

I would recommend the RE Audio SRX 12D4 because of its affordability and power handling. It really is the best bang for your buck.

Hey, these subs are very impressive for their size and price. I had 2 in my cavalier on a sundown audio saz-1500d amp and they worked amazing. They had clean, rich bass and I would definitely buy these again. I recommend these to anyone looking for cheap bass that will not dissapoint.

Recommended by a friend, I bought a single dual voice coil SRX12" to replace a bulky box and a pair of 10's. Installed it in a custom box in a Chevy HHR.

Talk about sneaking up on ya' and kicking you in the head. This speaker is very VERY impressive. Hard deep bass notes, and crisp cannon-like kick drums. I have owned Kicker, Fosgate, and a few others and the RE really holds it's place in the ranks.

Pros: Lots of pleasing, tight, punchy, deep, loud bass.
Cons: None.

Disclaimer: this is my first ever subwoofer, so my points of reference are very limited.

My setup is the following. I run this one in a 1.15 cu. ft hatchback style sealed "Sonic Sub Box" that you can buy here from Sonicelectronix. Almost 1.5 pounds of polyfill were stuffed into the box to enhance the sound. The voice coils are wired in parallel and I am pushing 300watts to it using a 2ohm stable amplifier. I set the crossover point on my head unit at 80Hz, with a 24dB per octave slope. The box is in the trunk of a midsized car.

My impressions so far are very positive. I listen a little bit of everything, but for the most part all sorts of rock music (alternative, classic, american, latin, etc), and also some latin music, like regueton. In my opinion my setup (box type, crossover, etc) is near optimal for the kind of music I listen. This subwoofer playes tight deep loud bass without distortions. The bass is tight as opposed to being boomy. The volume can be very loud, yet at the same time soft on your ears. Bass guitars and other bass heavy instruments sound excellent. It's unbelievable how much music you miss without a subwoofer. Given the cost of under $150 (including the box and accessories), this product is a steal. All in all I am very pleased I went with a Re Audio instead of subwoofer bargain basement cheapies.

I have used every sub u can think of I have a little moble electronic buss for th past 4 yrs. These SUBS POUND!!! They are getting 500 watts RMS each at 2 oms n sound GREAT!!!!!!! They replaced my orions n they blow them out th water. I think they can handle even more power..

I bought 1 12 and its taking 10k from my opti 12001 stupid loud wow.

These things are ridiculous. I put four of d2s in a 6cuft box stuffed them down into a 95 Integra and they get down. Got them powered by a Memphis pr1000d @ 1 ohm. Best subs I've owned so far. No one expects them to be so loud. Wont buy anything but re from now on.