emh9009

THAT'S ridiculous... almost better to not do it, epically on the curves? only bad roads around here are from logging trucks over the years. i just drive to the side of them, straddle the bad lines. still annoying, but it looks like i have it good in comparison.

that's a civic

good find! funny stuff right there. sucks about the coil though...

x2 on checking your grounds, they are very inportant to be tight and direct to metal of the car's frame. sand down any rust/paint at the contact points. hope that helps!

looks fun, we need woofer porn though... pop that hatch and lets see a light show at night with those voltage drops the neons will be strobing! sick box.

has anyone done their own? if so did you cut your own or order pre-cut? i'm debating if i want to do my own or not... leaning towards not lol j-roadtatts wash your car

tell your friends to get off those other crap-tastic forums and get it straight on SSA.com!

they sell recones on their site, or is the problem more specific to your sub?

its a big order, they may still be getting everything processed/ready to ship. they will send you shipping info when they ship, for sure

checked all your folders? maybe their email was put in your spam/junk folder?

every time i have talked/worked with him i came out happy about it. super nice guy, CS is top notch! he should get a section on here....

can never have enough bracing epically for those super heavy subs moving a ton of air and creating a lot of pressure in the enclosure

thats just a number, we would rather have useful information in a low number of threads than a million threads that are a waste of time.

same here...

after you deaden the doors you should get an improvement in midbass, so wait to get some new ones until after your deaden :

welcome, Neill! sick videos

he even offered to help you with your projects...

There's much more to it than that. First, cone area and Xmax are multiplied to arrive at a parameter known as Vd, or volume displacement. This is the amount of linear air displacement the driver is capable of achieving. The higher the Vd, the higher linear output capabilities the driver has as a larger Vd means the driver is capable of displacing more air. Second, don't confuse Xmax with excursion. They are different. Excursion is how far the cone is physically moving. Xmax is the maximum amount of linear excursion the driver is capable of achieving. Excursion is the amount of movement, Xmax is the limit of how much of that movement is "linear". Generally a driver operating at Xmax will have ~10% THD. This is typically the highest amount of acceptable performance. As you exceed Xmax it's generally considered that the distortion performance would be at an unacceptable level (among other things). In sealed enclosures, Vd is one of the important factors along with alignment and the driver's parameters in determining output capabilities. All things equal, the driver with the higher Vd will have higher output. In reality, things are never equal. So you have to look at the response of the driver in a given alignment along with your environment and available power. Having a higher Vd isn't any good if you don't have the requisite power to reach Xmax or if the driver is in an alignment that begins to roll off at a high frequency. Having a higher Vd is only a capability of higher output; whether or not you will be able to realize that higher output is dependent upon several other factors. In terms of low frequency performance, you're required to increase displacement by a factor of 4 in order to maintain a given SPL level one octave lower in frequency. This means that you need to displace 4x the air at 25hz as you do at 50hz to maintain the same SPL level at both frequencies. You can see how having a higher Xmax could be beneficial as displacement requirements increase substantially in lower frequencies. In the low frequencies Vd can be very important as it can very much limit how much linear output your system will be able to achieve. Luckily in car audio we have substantial cabin gain in the low frequencies as well, so we can maintain SPL levels at lower frequencies without having to quadruple our displacement. A 12db gain at 25hz compared to 50hz, for example, is equivalent to quadrupling your displacement. So if you have a 12db gain at 25hz compared to 50hz in your vehicle, you've already accomplished the feat. Generally you want the most cone area you can reasonably place within your space, environment and enclosure requirements. Why? A driver with a larger cone area will displace a greater amount of air for a given excursion level. This means that it takes less excursion to reach a given SPL level with more cone area. This, in turn, means that the driver(s) would ideally be operating further within it's linear range at that SPL level which, ideally, reduces distortion. This ofcourse assumes the drivers are of similar distortion performance as distortion performance will vary based on driver designs. For example, one driver may still have less distortion at 15mm than another more poorly designed driver (from a distortion perspective) driver operating at 10mm. The reason Xmax "doesn't matter" for SPL is because 1) the subwoofers are generally "burped" near tuning where excursion is minimized and 2) Xmax is a linear parameter....people competing in SPL don't really care about having higher distortion due to possibly exceeding Xmax. But that doesn't mean Xmax is not important in ported enclosures. Xmax is not a limitation on how far the driver can physically move , only on how much of that movement is linear. Also, going back to what we said about power and alignment; Xmax does not tell you how much excursion you will have in your alignment with your power. And that is what ultimately determines how much output you will have from the enclosure, any enclosure. Vd is still "important" in ported enclosure as it still helps determine which driver has the capability for higher linear output, but you have to look at your power and alignment to determine which will ultimately have higher excursion, and hence output, in use. In a ported enclosure generally enclosure size and tuning are going to have a significant impact on low frequency response and excursion with regards to frequency; but that doesn't make Xmax irrelevant for daily listening. About a half octave above tuning, the enclosure will behave similarly to a sealed enclosure meaning excursion will increase to a point that is similar to that of a sealed enclosure. Xmax may become important in this region where it's possible to reach or exceed the Xmax of the driver. That post feels like it was one giant ramble.....hopefully it makes sense. nice explanation, i learned a bit

well damn, its a very nice "different"!

its been too long since ive looked at this build. very nice work. super jealous of your front stage... i thought i was going big upgrading form some 5 1/4 to some 6 1/2s lol after seeing those tens i went for a drive and got to looking at my doors and though " i could easily fit a 10" in there..." haha never going to happen just wanted to give you some props for all your hard work that is obviously paying off. *wishes i could hear it* every one of your speakers looks amazing! lol

dont forget a volt meter

i was talking about the terminals on the sub itself

i think i've seen something like this on here before. the VC may be backwards or something. when looking at the terminals i think the + should always be on the left, maybe check that out?

X2 on the massive amount of research you should do! two speakers will have more cone area, dissipate heat better. but they will take up more room, it sounds like you have enough of that to spare. between fi and audioque i would go fi. if youre going two subs i would go bl, just to be easier on your electrical and such. of course one of either of fi's subs will be lotsa' bass (even the SSD if you haven't looked at that) there are plenty of quality brands out there, just do some more searching. (check out SSA ! ) i would buy quality>quantity, and i dont think i would buy any qudioque stuff. but thats just me for some unknown reason maybe just a new box will fix your problem, but i've heard two 12" KFCs and wasnt impressed at all lol (in a pre-fab box though) i hope you get at least something out of this post lol

nice post +1!