posted
hi there! i was just reading a post and came across box impedence........ can someone please explain this to me ? you see i have two quadcoil subs 1.5ohm per coil ..if i parellel them all on one sub it should be +-0.357ohm now if i conect the subs (paralled)in series i should have+-0.8ohm load ........ now when i mesure with a fluke multimeter i get 0.5 per sub? my amp is 1ohm stable if i run at +-0.8 HOW DOES BOX IMP EFFECT ME please explain ? im a gona see smoke ? or can it run due to the box impedence rise thanks
Posts: 80 | From: SOUTH AFRICA | Registered: Sep 2005
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posted
first of all, your fluke is probably measuring the resistance, not impedance, which is going to be lower.
and you will get impedance rise at the frequency increases, and as thermal compression kicks in
Posts: 5494 | From: Columbus, OH - formerly FL | Registered: Oct 2003
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posted
as a woofer moves the inductance of the coil changes the impedence as well. Also power = heat which i'm sure you know, heat changes the impedence too.
box impedence is realative to tuning and box size, just sitting in a box isn't going to change resistance, but when you start playing the woofer the impedence is all over the place
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Posts: 8169 | From: Russellville AL | Registered: Nov 2002
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