D2 or D4?

[Steve B]

On 4/30/2012 at 7:15 PM, One Way said:

No dude, if you're only running a single d2 woofer you can only bring it down to 1 ohm in parrallel, or higher it to 4 ohms in series. You can't leave it at 2 ohms.

May I ask why?

[CstrokerV]

3 hours ago, Steve B said:

May I ask why?

Because you have to run both coils and they only add up to those  two ohm loads .... but necroed this thread lol

Edited December 31, 2019 by CstrokerV

[AaronT]

Wow, spoon fed so much info the op left more baffled (hehe pun intended) than he started

[Joshdashef]

Diagrams should help explain this. Essentially whatever sub you get usually has dual (two) voice coils. You wire those in a certain way to get a nominal resistance (what your amp will see). 

All diagrams from this: https://www.the12volt.com/caraudio/subwoofer-wiring-diagrams.asp

Just remember wiring in series doubles resistance, parallel halves it. With more woofers you can get some more complicated wiring but essentially use the above website to double check yourself.

 

Say you buy a Dual 2 ohm woofer. Running a single one will let you get either 1ohm or 4 ohms nominal 

 

now if you had a dual 4 ohm woofer you can wire it to either 2 ohms or 8 ohms.

 

say you wanted four woofers and wanted a final nominal load of 1 ohm. Here you would want to run four 2 ohm woofers to reach 1 ohm. If you had four 4 ohm woofers you would end up at either 0.5 or 2 ohms.... not to be desired

 

 

sorry for such a long post on my phone between classes Rn. But hope this helps you visualize the differences in wiring your subs. Doesn’t hurt to double check!