kyleorsini

iTrader: (1)

ok well now this is frusterating, today i completed my new box for the type r its a sealed box and i just hooked up my sub and pounded it for a good 30 mins and played with some eq's and such and well to me the type r is crap in a sealed. and as for me thinking my sub is starting to go i think it is the enclosure. as i just had it going for 30 mins and no stink, gain was high had the db boost at about 3 and some boost on the hu. now im just lost

MR2NR

iTrader: (66)

If you went from a ported to sealed box, it is that much harder to smell it. In a sealed box if your sub lets go, the magic smoke generally stays in there....wait until you take the sub out to see what happens. In a ported box if your sub lets go, the magic smoke that made it work comes right out that port and you smell it right away.

kyleorsini

iTrader: (1)

yeah didnt think of that

KenC

I think if we're going to have a discussion on subs becoming unusable, we should define what exactly "blown" encompasses.

Too much power, or distorted power fries voice coils. Yup. That part I've seen first hand a few times, be it competition or otherwise.

Too little power can do damage to subwoofers. A lot harder to say you've seen it, but I would have to say that this is true as well. If the voice coils do not have the power to regulate their movement along the magnet, the woofer can bottom out or hit xmax, doing damage. It's not a good thing for your surround, and I can't surmise it would be too great for the voice coil leads either.

My personal break-in period is about two weeks. As far as I've had the opportunity to witness, the only thing you really need to look out for will be the woofer surround. As for "Voice coil moisture"... That's possibly the most interesting excuse I've ever heard of.

On the note of gains, they really should be matched up as a filler between what your head unit can put out (preout voltage) and what your maximum input voltage on the amplifier is. That's what it's really there for. It's not meant as a volume control, and can cause noise. There is no general percentage that you should be turning the **** truly, but most people don't have to turn it up above 1/4 or 1/2. It really depends on the head unit and the amp.

kyleorsini

iTrader: (1)

i need to go back and talk to someone tomorow i didnt today as i was wasting my time and money on a sealed box grrr. but after i get a new one, im definatly goinng to use a multimeter and test tones and such to set it right, but i need a better box design i know this isnt the right thread, but alpine specs is like .75-1.75 cubes at 33hz i belive the manual has 2 numbers (f3-33hz and fb-36hz) anyway ive done posts and ive been told a 2cubes at about 35 hz will make the sub hit hard. and my box is at that now and i mean this is my first sub but i know its being held back.