Impedance, 2/8 ohms per speaker

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bullard2003

Member - Posts: 16

Joined: December 15, 2003

Location: United States

Posted: December 16, 2003 at 4:26 PM / IP Logged

OK, I have 2 Pioneer dual voice coil subs. I am wondering how many ohms that would be if I wired them in paralell. What about series? It says 2/8 ohms per speaker, so that would be 4 ohms per voice coil, right? The calculator doesn`t support dual voice coil very well. Any help would be appreciated!

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EzekialPhoenix

Copper - Posts: 83

Joined: November 10, 2003

Location: United States

Posted: December 16, 2003 at 4:51 PM / IP Logged

I am not sure what 2/8 ohms means, but if you are right and each sub is a dual 4 ohm voice coil sub, then if you wire them in parallel they will be at 1 ohm, and if you wire in series they will be at 16 ohms, and if you wire in series/parallel or parallel/series they will be at 4 ohms.

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bullard2003

Member - Posts: 16

Joined: December 15, 2003

Location: United States

Posted: December 16, 2003 at 9:50 PM / IP Logged

OK, so I know how to wire in a paralell OR a series, but how do I do both (to achieve 4 ohms)?

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eargasm

Member - Posts: 48

Joined: November 16, 2003

Location: Australia

Posted: December 17, 2003 at 1:05 AM / IP Logged

what 2/8 is saying is that, because the sub has 2 voice coils, it can be wired to be either 2 ohms or 8 ohms. can tell it is dual v/c because the sub will have 2 pairs of terminals.

two 4 ohm voice coils in series is 8 ohms.

two 4 ohm voice coils in parallel is 2 ohms.

soooo. wire the voice coils on the subs in series, ie ______+ vcoil1 -____+ vcoil2 -______

and then the two "eight ohm" subs in parallel to give an end result of 4 ohms to the amp.

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tuneman

Member - Posts: 43

Joined: November 23, 2003

Location: Washington, United States

Posted: December 17, 2003 at 2:03 AM / IP Logged

When the specs say they are 2/8 ohms, this means that each voice coil rests at 4 ohms. Wiring the one woofer in series will give you 8 ohms, wiring the one woofer in parallel will give you 2 ohms.

You can either wire them both series and get 8 ohms stereo and them parallel them to get 4 ohms mono. orrrr

You can wire them each in parallel to get 2 ohms stereo (which most any amp will play nicely at) and then series the two woofes at the amp to give 4 ohms mono.

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Impedance, 2/8 ohms per speaker

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