Audiopipe is a brand that people like to bash on because of their pricing. They are CEA Certified and Compliant so they do atleast rated power if not more in most cases. They are also one of the most efficient amplifiers I have ever seen. They are rated to have an efficiency rating of >85%, so they are atleast 85% efficient. I have read reviews and test on their AP line and some have reported an efficiency of 91-93% efficiency. Now that is just crazy. One of the test was on the AP30001D and they clamped it at over 3122wrms @ 1 ohm @ 14.1 volts. Oh yeah, their AP line of amps are 16 volt compatible, so throw a Kinetic HC16V 16 volt battery (Which I have a brand new one for sale by the way, which also has a 12 volt post for the rest of your vehicle) on the 30001D and you are playing close to the 4000wrms zone. I have never seen an am that is in the 90's.... I have owned and installed over 30 of their amplifiers and only had to return one of their amplifiers. Audiopipe's Customer Service is top notch. They replaced it and shipped it back FedEx for free. People see the small price tag and instantly, without even seeing, hearing, or having dealt with their amplifiers and bag on them. I have 3 of their amps in my truck and a Phoenix Gold Tantrum 500.2. I have also ran their AP30001D that is rated for 3000wrms x 1 @ 2 ohm or 1500wrms x 2 @ 1 ohm. They are in fact two AP15001D's, strapped internally and put in a larger case. I installed an Audiopipe AP15001D in a friends Escape in a 4.8 cu ft box with two Infinity Kappa Perfect 10's tuned to 34hz, wired to 1 ohm so they were receiving roughly 1200-1500wrms. Not quite sure as I didn't get to adjust the gains. I just set them at a safe setting and he had to hit the road. He listened to them and I told him to adjust the gains and he turned the gain up before they bottomed out and I must say, wow, I was impressed by those subs. If you haven't figured it out already, I don't go with mainstream brands. I go with the smaller audiophile type brands for my car audio equipment where they spend their money on Research & Development and parts rather than say, Kicker, who spends a majority of their money on marketing, which takes up alot of money. Audiophile companies don't need to advertise as 1) they cant mass produce their products because they are a smaller shop and hand build everything from scratch and 2) their market is geared towards people who are audiophiles who attend and compete in SPL and SQ Car Audio Competitions. One mainstream brand subwoofer I LOVE is the newer Alpine Type R 12. I ran two of those when they first came out and were the forum boner on caraudio.com and other car audio message boards. So if you are running JL Audio subs and are looking to change it up anytime soon, check out those audiophile brands I mentioned above. I bet you that you will be extremely surprised in the difference, plus the money you will save. With the money you save, you upgrade a component to your car audio such as an amplifier, XS D3400 battery (which is what I have installed as its a Group 34 battery that the NNBS trucks have), Mechman 270a H.O. Alternator (which I have installed also) new components, go to a DVD/Navigation unit (Mine is their flagship model; JVC KW-NT800HDT (MSRP of $1499, but I paid $900 from a car audio shop in Dallas) or something else, while getting a much harder hitting subwoofer(s) and improved SQ with great Customer Service and warranty. Mainstream brands try to find ways to get out of warrantying their subwoofers by saying it was user error by feeding the amp too much power, improper installation not done by a certified tech or an authorized brand dealer, amp clipping, etc... You don't get that kind of crap with those brands I mentioned above. So give them a shot. Try a pair of Sundown Audio SA-12's ported with 1500-2000wrms. Wow. Ok, I just typed an awful lot and it was all about subwoofers when my thread is suppose to be about speakers, not subwoofers. I apologize in advance. I just had surgery and I am on the strongest hydrocodone you can get and it makes me ramble and ramble and ramble. Again, I apologize and please don't be offended if I knocked your brand, that is if you are running JL Audio speakers, subwoofers, or amplifiers. Save the money while upgrading at the same time my friend!