korey_hofer
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PRICED TO MOVE
korey_hofer replied to zayres29's topic in For Sale: Car audio related equipment only
do you know the points and slope of the x overs? -
Does enclosure size effect subwoofer cooling
korey_hofer replied to burzendowski's topic in Subwoofers / Enclosures
on a very minute scale, other factors are more important when box size comes to it. -
Digital Designs even need a break in period?!!!
korey_hofer replied to Stee-Z's topic in Subwoofers / Enclosures
dd's use cheap laminated spiders, you want to tear them in half go full tilt out of the box. If you want your sub to last break it in. The dc's spl subs have the same problem to all of you dc guys trying to one up on DD. -
but ideally you still want it as low as possible correct? for a burp box you want it low as possible, for a daily box you want it to be flat. A speaker is more efficient right around resonant freq. you need it to rise at res freq to lower the input power it receives so it will play all freq equally. There is a lot more to impedance rise then just rising 10db and be done with it. Heat, humidity, air flow, wattage, freq, all have an effect on how much the coil's impedance will rise. To be correct, it's not rising at all, the enclosure lowers impedance spikes, play a driver free air and clamp it to see how far it spikes, that is why wall socket test are completely pointless. Everybody always ignores the fact you need impedance to ''rise'' to get a flat responding sub stage. you want your highest peak impedance to be low as possible as it is almost always at your most efficient spot in your enclosure, after that you want it to level out the spikes and dips in the drivers response.