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Sealed is typically less efficient, and the reason it takes more power is because the air inside the box acts as a spring because it has no where to go when you push or pull the diaphragm. try pushing a syringe while plugging the end. Same idea. It requires more power to move the driver. How can it take more power? Well, the driver now has to do more work because it has an extra force pushing and pulling on it. Power is typically limited by the suspension (max power) and RMS is typically how fast the voice coil can cool and take on a continuous amount of power. does that help or just confuse you? Sorry, im tired.

for home audio: Klispch Wisdom Audio Krell Definitive Energy / Mirage / API Rockets / Onix SVS Sunfire Rythmic Soundspliter for pro audio: Bassmax Worxaudio JBL Meyer for car audio: Eclipse Soundsplinter favorite company: TC Sounds

well said, btw, is new RE XXX that really tall black subwoofer with yellow spider and a half dome poll cap?

lets me see if I can shed some light here. The RLp's are rated at what? 500 watts? They can and have been proven to take more. It is true that newbie

with 29hz tuning frequency and that box size with that port area, I take it the lenght of your port is 30" in each subwoofer Is that the case?

RLp's are a step up from W7's as far as quality goes imo. The W7's have a massive surround that adds a lot of distortion. The W7's will play a bit louder than a RLp inch for inch (of course, the 15 rlp will kill the 12w7 for SPL and it will dig a lot deeper). If you want to out do the W7's get teh RLs, it will actaully play louder and best it with ease for qulaity. It also has a high roll surround which allows maxium cone area and maxium travel. Its an ideal surround for SPL + quality.

You can run the dual RL-s's in parallel and get the DCR below 2 ohms. I don't know anything about the XXX's, but the RL-'s hold the title for king of low distortion, so they can go about 6dB higher than a non linear driver of equal design at the same tolerance of THD. Also because of the high surround, they have a very high xmax and can be overdriven pretty darn far too, almost 4" peak to peak.

It is its own custom motor. The RL-s's will sound the cleanest.

Just paint it. I'm relly not sure which paint to use to be honest, but that's what I would try. Look for some metal spray paints.

No, 1200ea. I currently have 900 to each right now. <{POST_SNAPBACK}> They will be fine, are you wiring them in parallel?

We're going to start overhauling our platform and renaming our drivers. I think LMT is going to be renamed to LMS (linear motor series) because Linear motor technology is trade marked already. We

If you want more output, go with 15's not 12's and I would run at least 1500 watts into 4 ohms rms to each driver. <{POST_SNAPBACK}> The webiste says 700 watts will get the subs to full excursion. Wont that be enough for good output? I dont have the money to invest in a second amp and an upgrade to my electrical. <{POST_SNAPBACK}> If you don't have the money, then don't go linear, The linears will push more air, but they cost a lot more because they are fitted with a ruthless motor design. The linear

Here are your numbers: 4 ft^3 two 4" ports at 15" = 28 hz. 3 ft^3 two 4" ports at 15" = 33 hz. 4 ft^3 two 4" ports at 17" = 27 hz. 3 ft^3 two 4" ports at 17" = 31 hz. go with at least two 4" ports, not three 3" ports. Thoes woofers move a lot of air and if you under port them you will have major chuffing. I would even suggest two 4.5" or 5" ports 4 ft^3 two 4.5" ports at 15" = 32 hz. 3 ft^3 two 4.5" ports at 15" = 37 hz. 4 ft^3 two 4.5" ports at 17" = 30 hz. 3 ft^3 two 4.5" ports at 17" = 35 hz.

If you want more output, go with 15's not 12's and I would run at least 1500 watts into 4 ohms rms to each driver.

your boston is probably shielded. raw neo's are scary to handle. I'm very gun-shy when holding them around random pieces of large metal. I have got way too many blistered from metal scraps flying at my fingers while holding the neo.

the magnetic flux is really what you need to look at. sure you can have 500 ounce motor magnets out of ferrite (Eclipse titanium pro), but you can then use neodymium's (sp?) and have tiny magnets with 6 times the flux. We use the neo's on the very expensive PA 18" subwoofers. We are going to start using it sooner on the consumer stuff, but it is more expensive. The next generation JL audio W7 will use neo, but no one is supposed to know that. I'm guessing in a few years, most all of [our] higher end consumer stuff will be using neo. The only trick with neo is you need a larger steel bottom and top plate to control the flux so the motor ends up being still pretty heavy, but the actual magnets are much smaller.

bring cold beer and we'll talk...

We're really busy and have a lot of projects going on right now. We're working to improve customer support.

Yep they both do, Thilo is the mastermind, TC would be nothing w/o him. Re-coning your woofer? Unless you damaged it, I wouldn

Just saying hi, and I hope everyone enjoys the subs. -Kyle