korey_hofer
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Everything posted by 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.
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600 plus shipping obo. these are the loudest watt for watt ferrite based motors. triple 10'' wide slugs, 1.25'' top plate, tight spl gap. due to the high carbon steel they do rust pretty easily and is why they are stained up. It doesn't affect performance and won't matter once painted I just never got to it. I have lost all interest in loud so these need to go. Don't be afraid to post offers but don't low ball either. Scott Sackett and Fix my speaker can recone these for sure. Other places that have 3'' 4 layer coils might be able to as well. I also have 4 12'' baskets 2 gray, one gloss black and one flat black. any interest in those I will get pictures. These motors fit in the flat rate boxes so shipping is much cheaper than when I bought them. These are in the same condition I bought them in. did 153 on music with 3 on 3k, and 147 on 3k single 12'' both first attempts. any questions feel free to ask. pictures sorry I put wrong price down it was supposed to say 600 not 800
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you need the flare on the inside to do any good
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.75 plywood is close to 10 times as stiff as birch is and is acoustically dead. I'll be using it for a build once I find some one to cut to my needs
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You would. sure would since I know the dynamic properties of each, it's also well over triple what birch cost
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neither mdf or birch is the best If I had to say which was best it would be bamboo
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Afghanistan Debate
korey_hofer replied to JB1991's topic in Off Topic - Random, Misc posts - the forum "Junk Drawer"
I disagree look at our economy we already bankrupt , we can't AFFORD BEING AT WAR what have we accomplish over there NOTHING , wake up, seriously were about to go for a ride prepare your selfs we have been bankrupt well before the war, so I guess wake up as well? this is the dumbest reply I have ever recive , this is why this fucking county if fuck up , with the mentality you have , don't u see we can't afford war any more, dont you see the cost of living is getting more and more expensive , and for what for an unnecessary pointless war that's just fucking us up and who takes the blow us the taxpayers . lol you mad cause you can't use the war as an excuse why we are in debt? It's not an unnecessary war. People like YOU are the reason why our country is so fucked up -
yes I use pvc pipe not ''areo ports''