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You are incorrect on your understanding of subbass. First, the "type" of bass has nothing to do with the size of the subwoofer and everything to do with the design of that particular subwoofer and, just as importantly, the design of the enclosure. I believe by "beat beat bass" you are referring to the driver's ability to play the higher region of the subbass bandwidth. The size of the subwoofer has nothing to do with it's ability to play that frequency range. This is directly related to the driver's design, not it's diameter. The 15" will not inherently be better in this frequency range than an 18" subwoofer. It's entirely possible for a 15" driver to perform worse in the upper subbass/lower midbass frequencies than an 18" subwoofer. So, first and foremost, stop using the subwoofer's diameter as a reference for how well they will play into the higher frequency range as the subwoofer's diameter has absolutely nothing to do with this ability. Second, you are going to need very strong midbass driver's by going either route. Either option is going to end up being significantly louder than a standard set of midbass speakers. Third, both drivers are going to perform pretty poorly in a sealed enclosure. They were both designed to perform optimally in a ported enclosure. Sealed is not going to be an option for either the SMD or the BTL. A sealed enclosure for those drivers is not going to result in a flat frequency response. They simply were not designed for that purpose. The SMD was not designed as an SPL only subwoofer. It was designed for musical purposes.

Winamp FTL actually...try searching for a track when you are going 60 and NOT on a highway... Dammed, get Centrafuse and a touchscreen. After working on somebody's car-puter setup, I feel that the only reliable solution is a touchscreen + a computer instead of a laptop. Otherwise it could get frustrating to control the whole thing.

Ported will be awesome. I also can't wait for the MEGALITH to come out (planning to grab 4 for myself). An extra battery will probably be needed, and a sub like that with 2KW on it will DEFINITELY want a well braced box.

There is no minimum power to "push" a sub. Additionally, power requirements are going to depend on the enclosure alignment. The RMS rating of the sub has absolutely nothing to do with power requirements. Buy what you can afford, if you have extra power it is just headroom...

Keep in mind there is more to it than THD. A shift in Bl and/or Cms will also affect the parameters of the driver, which will in turn affect the response of the driver. Some people consider a linear design that decreases the parameter shift more important in subwoofers than the distortion lowering mechanisms involved as we are less sensitive to distortion in this bandwidth. A properly handled inductance is likewise important for reasons other than distortion, as an improperly treated inductance can likewise affect or limit response within the intended/necessary bandwidth. I'm sure you already know all of this, and probably more than myself in regards to driver design. There's much more to the discussion but that really isn't pertinent. My simple point is that I think it's wrong to focus the discussion solely in terms of THD. That said it doesn't necessarily take an "exotic" motor design to achieve these goals. For example, companies such as Peerless and Scanspeak have consistently built high performance drivers without much in the way of "exotic" motor designs. A well executed standard motor topology can be designed to be more than sufficient at supporting a high performance loudspeaker.

What a bunch of CRAP! I wish you guys the best out in the 808 hope this nonsense does not get approved.

this is so RIDICULOUS!! cali would eat this bill right up! signed and submitted!

Done.. comments on what i submitted were: "Focus on actual crime."

i can see it now.. people gonna get pulled over on cops.. You been drinkin tonight sir? No. Well, can u step out of the car for me please. Well, well well. Look what we have here! Looks like 2 SSA Zcon 18s... Oh man oh man, that's a Class A Felony right there. You'd be better off just havin a bag of weed in your seat but no, you had to go and put 5,000w in the ride too.. Mmm...mmm... you are under arrest. But officer.. that isn't mine.. i don't know how those 18s got in there..

wow.. this has to be one of the most ridiculous thngs ive ever heard. i opposed also.

just sent, i was not pleased having to but when a state decides to act like a baby, well, someone has to step up. Hello, my name is Sean, National Director of SPL-Lab USA. I have recently been informed of this bill and would like to express what big mistake Hawaii is about to make for the country and not just to the state in which you reside. It appears to me that this bill has been manifested based on the principles of selfishness of not making it public enough and has created a backdoor to try and push for something that is unnecessary. Interestingly enough, it is this "secrecy" that has me discouraged about the goals of the bill. It is understood to me that this bill is a way to "get back" at the community for basically not respecting others. If this is the view many supporters have, they are going about it completely wrong. This bill is another failed attempt at looking at the big picture when it comes to stereo nuisance as in all other things, the stereo scene in itself is and will always be a hobby. Like many hobbies, most hobbies are completely legal and are there to keep people busy or out of trouble. Looking at the stereo genre that we normally call the car audio scene, this hobby is completely legal. What is misinterpreted is the usage of the hobby. Car audio is very popular in young teens because their car is their own personal space. Young teens also like going to concerts. Putting the two together equals car audio. We also have another group of people, those who enjoy the realism of music. Taking this hobby away from people is like taking the ability away to go see a movie. It's something the whole nation does, but how responsible are those that do listen to music in their car? That's what has started it all... Loud music. Overly excessive for other people who care not to hear it. A personal choice, not a mandatory requirement to keep peace to prevent harm toward someone. The car audio scene is filled with more responsible adults than uneducated teens. I cannot stress this enough. There are many organizations and leagues around the world, not just in this country that let anybody compete to see who has the loudest vehicle based on divisions to make it fair. Just like any competition, these competitions builds respect and responsibility to those who have installed an aftermarket setup that has the "potential" of becoming excessively loud. The internet is the most trafficked medium on the planet now. More and more people can get information quicker and easier than ever before. It is because of the internet that we have message boards to help those who are in this hobby to become more educated and also become more responsible about those around them. My point is clear without any question- Enforcing this bill to assume mischievous abuse toward the public will open a door so wide, the nation will retaliate involuntarily and will cause this nation to be in worse shape that what it is right now. Car audio is holding this nation together? No. Of course not... Killing off one of the most popular hobbies among many, many, many people around this country will also affect those out of this country as well... It is a snowball effect and will rebound back to many other companies around the world in no time. If this bill were passed, other states would also like to consider it due to their selfish thinking of handling a very minute problem that is being blown out of proportion. I must emphasize this- Does Hawaii realize what they might start? The entire country is still struggling to find jobs. There are many people still out there that can't find a job. Removing the legal right to have any said aftermarket product installed would diminish sells in this country as this bill were to move from state to state. Cutting back sales would eventually lead to even more jobs and companies disappearing from our history. And when the American people look back several years later at what we as a nation were doing to try and help ourselves rebuild and grow... They will see Hawaii was one of the first states to start a chain reaction to enforcing such a bill that ultimately led to even more jobs being lost, even more people without jobs. In order for the country to grow, we do NOT fuel the unemployed fire, we employ, not take away! There are far too many analogies I can use to show how this bill is overly aggressive in every possible view yet I refuse to take the time to explain why because I will not bring myself down to the state's level to explain. If the state can't figure out why, then the people of Hawaii are already victims of a harsh penalty that they should have the privilege of using. If a state wants to make the people who give the car audio hobby a bad reputation, then go about it at a personal level. Do not attack the whole nation starting with your state. Sean SPL-Lab USA If you have questions, email me- [email protected]

I used this, very very well put.

Legislators of the great state of Hawaii, I have recently been informed of Bill HB1178 currently being introduced. This Bill if allowed to pass would have the potential to set forth a horrible chain of events for Hawaii and the rest of the nation. If aftermarket car audio is to be made an offense in Hawaii, many adults both young and old will suffer. Gone will be the joys of working after work to get the ‘perfect sound’ for your daily commute. For many of the people who purchase a vehicle, the ‘stock’ stereo just does not suffice. Could you imagine hearing Beethoven, Bach, Pink Floyd, or any other music with flat un-balanced sound? I know I cannot. It would make the day to day commute even longer. As a result more people may choose to speed to get through the mundane ride even faster. This would increase the risk of traffic accidents, and fatalities. People just do not have the patience to ride in silence, or in boredom. Another point I would like to make is the economic impact this would have not only in the United States, but worldwide. If aftermarket car audio is forbidden organizations such as MECA (Mobile Electronics Competition Association), DB Drag (Decibel Drag Racing), and other contained organizations would cease to exist. Companies such as Rockford Fosgate (RF on the NYSE), Pioneer, DEI (Directed Electronics Incorporated), and many others also would cease to exist. This would put tens if not hundreds of thousands of currently hard working American’s out of work. In addition shipping companies such as UPS, FedEx, DHL, and the United States Postal Service would lose revenue. The total cost of outlawing something most enthusiasts see as a right, would be detrimental. To do such a thing would also set precedence for this to happen in other states further increasing these potential risks to public safety, the stability of our already fragile economy, and possibly even further than that. Again, Legislators of Hawaii as a member of United States Armed Forces currently serving in Baghdad, Iraq I ask you not to pass Bill HB1178. To do so would have grave consequences. I look forward to being PCS’d (Permanent Change of Station) to Hawaii in my career. If this bill is allowed to pass, it would truly take away from the pleasure of being able to serve this great country of ours in the great State of Hawaii. I attached the above. I hope it somehow helps man. Ensure those in attendance are not showing up 'Bumping' or acting like fools. That will only add to the possibility of this going through. J

That sucks. Signed. Good thing NY is pretty lax on car stuff. We can have systems, tint, exhaust..all that

Well, I submitted my opposal as well. I can't believe such crap could seriously become law anywhere. I don't know what anyone else was filling out in the comments, but this is the piece of my mind I gave them. If this would ever pass in my state the Fucker$ can kiss my ass.

Oh fuck no. Not when I'm this close to finishing my build uh uh hell no. Shit, Texas would scoop this up and all hell would break loose... "This bill is unbelievable. Plenty of people make a hobby as well as a LIVING out of Car Audio. What kind of sense does it make to put companies in the dirt and destroy the livelihood of people who are gifted with technical genius and have such passion in their field? How fair is that? What happens to freedom of speech? What happens to freedom of expression? If this should pass and spread to other states it will be the death of an industry and with the slim pickings of today's economy what sense does that make?" Bitches.

i went and filled it out...

done, such bs

This pisses me off ... I submitted.

That is total bullsh*t! Completed!

Done! What bullshit!

sure glad they helped you out with one even you admitted it was the amplifiers fault..... must be nice

Well duh. It's stuff like that that gets real audio enthusiasts get into trouble. Maybe. But i don't understand why it's okay for cars to rev their engines when they have a exhaust on and not get into trouble or ruin their "sport." I don't understand why motorcycles can be loud and also rev their engines at people without any consequences. Yes, we can turn down our volume, but they can quiet their cars/motorcycles too. I play at full tilt 24.7 unless i am in a neighborhood. It's legal to a certain extent and i am going to do it. I might think about stopping once motorcycles and loud cars "turn down" their shit first. If you don't like it, roll up your window. If you can still hear it, get over it or stop driving around with the risk of having to hear it

Firs off, IF YOUR GOING TO JUST TELL ME IDK WHAT IM DOING, THEN JUST LEAVE. I DO NOT WANT TO HEAR IT. IM LEARNING. (and you know who you are) ok. so as most of u have seen in my other thread, i have just added a seconed battery. only problem is that after playing for 3 or 4 mins, my volt meter and stuff goes back to the way it was befor. goes crazy when bass hits. So im going to do the big 3. i got to looking at my alternator yesterday and my wire going from my alternator goes to my fuse box. not to my battery. so what do i do? should i still updrade it, or just leave it and do the rest? any HELP is appreciated guys. Thanks