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determining resistance

Old 01-10-2004, 12:48 PM
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i ust want to make sure my multi meter is right, or if i am doing it right....i have 2 dual 4 ohm subs, and if i connect all v/c's in parallel, i get a reading of 1.4 ohms, is this right, and if i pull one of the v/c's out of the equation i get 1.9 ohms, does any one have any input on this?
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Old 01-10-2004, 01:26 PM
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Yeah that would be the right impedance make sure your amplifier can handle it though. [img]smile.gif[/img]

[ January 10, 2004, 02:27 PM: Message edited by: Dragonfly ]
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Old 01-10-2004, 04:43 PM
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thanks man, that almost seems too easy. is there any particular reason why the resistance wouldnt be an even 1 ohm for 4 v/c's?
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Old 01-10-2004, 04:47 PM
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The resistance is never exactly 4 ohms it varies from sub to sub so you always end up with a 3.x or 4.x per coil therefore you can never get exactly 1 ohm

[ January 10, 2004, 05:48 PM: Message edited by: Dragonfly ]
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Old 01-10-2004, 04:52 PM
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i see, alright thanx again man
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Old 01-13-2004, 09:33 AM
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Dukk is rigth.

Impedance will change with frequncy and will vastly range. Yes you can have up to 50ohms and above once a driver is loaded into an enclosure.

I myself use a Linear X meter card and built the "impedance cable" and test drivers wonce installed. It gives me a freq graph and shows impedance at cross the bad I specify.

But yes you can do the multimeter thing, but that only gives you a very narrow window of what is really going on.


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