REVpuggie

what kind do you use ? I've tried the wood-inserts but for some reason all the want is to chew up my mdf, going straight into that hole doesnt seem to be a possibility for those damn things , I've thought about using finethreaded inserts for steel and glueing them with locktite into place , haven't tried it though . for now I use T-nuts , I always glue them onto te mdf to prevent any problems and another thing, the threading of those things is awefull I always check if its any good before using ...it may be the quality of steel that is to soft .they're still better than woodscrews

my 2cents , it would be useles to connect 3 chambers ported in series as you effectively would dampen 3 frequencies what would mean you are seriously hurting the drivers efficency . instead of thinking up strange bandpass boxes , i'd suggest you read up on TL's and horns , very efficient not that hard to build and a fun way to fill up your free time building testboxes to see what they do and learning about them .

they've been on the european market for a long time , great german company ,very solid kicks, smooth tweets and clear mids ....

not my style !

I like the Pioneer P88rsII a lot ....great sound quality ,good EQ

thats probably because of a high voltage drop , check your batteries, wiring and alt

thanks for the reply , I was looking for that but couldnt find it

Hey all , I've got this AA mayhem 15 inch dual 2 ohms wired to 1 ohm , now BBpro6 tells me that the minimum impedance under load will be 2,05 ohms in the box its playing in , is this what the amp will see or will the amp still see the Re of 0,7 ? thanks in advance .

With the voice coils in tandem this design is more efficient than an iso-compound design. In addition the box would be a straight forward ported box. None of this box in a box crap. I'm not sure the air spring in an iso-compound box this really worth anything. I'm sure you can do something with it, but it would take extensive testing, meaning big $$. The result would be such a select box that it probably wouldn't work for any of us. Is there another spider in between the two motors to avoid coil rock? That's got to be one hell of a pole piece. Is it vented? Definitely need a side view. please read the question again . and the coil rocking is indeed also something I worried about...

still a little undesided if i'm liking this or not ... this is probably not going to fit in hatchbacks ?whats the dept on these things? .........butt if this is going to push more air ...hey I'm likin it ! how does this disign compare to an isobaric compound ? I'd think motor wise there would be some simularities ???? and YES we want some T/S parameters !

You'll keep having trouble getting bass into the cabin as long as tou're not altering the steel construction behind the rear seats. concentrate on that

bass is always omnidirectional. there is no exception to that. and yes, like normal people, there has been plenty of times that i hear a loud system, and look into a crowd of cars and have a difficult time telling which one it is. hmm... maybe im just weird? the only way u can tell where its coming from, is when the volume gradually increases as it gets closer, peaks in volume, and then gradually decreases as it gets farther away. other than that, bass has been and will always be dubbed omnidirectional. Well , I have to dissagree ! frequencies shift as you are moving away or towards something , in short : to the person standig/sitting stil the sound shifts .you produce higher frequencies when you drive towards them as the sound is compressed and lower as the soundwaves are elongated as you move away from him . same goes for SPL ,the closer the person is to you it louder it wil be. this way even bass frequencies can be detected easily from which direction they come from . so low frequency waves themselves are omnidirectional you in your car are NOT

no one is going to be able to give you an ready to use SPLcomp blueprint that will get every last ounce of decibel out of your BTL , get hold of an termlab and start testing , i figure that you'll have it right by box nr. 10 or so didnt I get you on track the last time ? try getting the cars peak up for starters , so get your welding gear out and a mountain dampening

I love it , did a great job !!! hope Tim tell's me if/when its coming to Holland for a show !!!

...totally depends on setup i'd say ...music would benefit of two 10 ported because of the geater suface area and porttuning

for the sake of good audio ....make your own 8in or bigger ports , just use the search button on this forum and get some pvc ... I think there is a self made 5inch port in my buildlog , works like a charm .

for stuff like this I'd use 2ich thich and a lot of bracing ....

Well , I'm from the Netherlands so I guess I have to respond to this , its legal where here so I can put some light on this subject I think . as with everething there are pro's and cons , I'll put some on a list . - the percentage of users actually has lowered since its been legal . - tax income for the state - the link between te softer drugs like weed and hasj and the harder drugs has become smaller , meaning , often when you start smoking weed you'll eventually use coke or an other highly addicive drug simply because your (not legal)dealer sells that too , when its legal you'll go to a shop that ONLY has hasj and weed - price per gramm halved , nice for everyone who smokes but also for those who dont , because there are less robbery's muggings and such , because its affordable . - since its legal , schools can give better education about drugs cons : - who is allowed to farm weed ? because its such a high profit buissines ,everyone will want to farm it ! - where to the give the entrepeneurs permission to open a weedshop ... cant be to close to schools or playgrounds and anywhere else where small children often are . -how to control what and how much is being sold and how strong it is , there should be some kind of system like with sigarettes , again to cotrol taxes overall I think it worked like a charm where I'm from , more happy faces , less prisoners , less tax money thrown away ...

sadly , no exp. with those woofers eighter . But I can tell you this , its prob a modified PA woofer. they have a sister company called MASTER and make freaking loud PA systems and do a lot of OEM Beyma's car-amps a amongst the best sounding I've come across , a very good friend has 2 1st edition Beyma 3600RL's ,he'll NEVER sell those (and if they were mine I wouldnt too) ! as for subwoofers you might wanna stick to the brands offered on this forum , I'm all for Fi / Ascendant Audio , others will say different ,in the end All brands here make kick ass quality goods

what car are you trying to achieve this in ?

whahaha , that would make an excellent quote to put on at the end of each post.

uhhhh...wanna bet everything isn't entered correct!?!?!? Everything is entered on the parameters...... Taken from the very websites that make each sub. Granted some figures are in metric, I had to convert to US standard.... I know what I'm doing with Termpak trust me, I have made many enclosures by using this program. Granted, a real world application will change the tuning due to the vehicle resonant freq. Aside from that, are you looking at the same graphs I posted???? The ripple on the Fi is retarded... That's why it's an SPL sub and not a SQ sub. The graph plainly show the Fi deviates from flat by 1 more than the SSA. See the green line???? You want that to be as smooth as possible, no mountain peak like the Fi..... Disregard the spl line, it's not a true fair judgement. As for the rest, Termpak seems to work well for Thumpper @ PTS, So I guess he enters stuff wrong too....hmmmmmmm Yes you can work with Termpak .....but you clearly havent got a clue HOW to interpred those graphs you're seeing ...entering an Le would have altered the praph , that would have shown roll off in the higher octaves , so I'm 100% sure you didnt enter any ! Again both subs measure just fine , but you have to know how to interpred them , and then there is still theory over practise , Listen to both and then make up your mind about what YOU like !

@ Jay-C76 , those graphs you posted aren't really worth anything .... you didnt enter an ' Le ' with te T/S parameters .... and would suggest that a Xcon would actually be peakier in an in-car application taking into account the cars own peak resonanse .... the Xcon would be better in a HT app. for sure ... They both measure just fine , I couldnt make a decission based on those graphs .

sorry for overseeing that post ... butt still, use your imagination it can be done without having stuff sticking out of the box