Wiring subs to a monoblock

[DocJames]

I was just wondering if subs can be wired to different ohms on a monoblock amp or if since the will be connecting to the same points if it will change the overall ohms of everything since they will all be touching?

I have a set of 15s I have wired to my amp and have them wired at 4ohms to keep the load down on them.

But I have a 12 I want to add to the mix but want it wired to 1 since if can handle full load of this amp.

Is there a way to keep those at 4 ohms and wire the 12 up at 1? or will connecting them to the same spots on the amp make the load of everything change??

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[n2audio 5,000+ posts]

everything will change.

Sounds like you have two d4's and a d2?

First of all - nobody with any understanding of how subwoofers (or car audio in general) work will tell you it's a good idea to throw any sub into any mix unless they're all identical.

With that being said -- If you wire the d2 for 1 and then wire it parallel with the 4 ohm d4's the impedance at the amp will drop to 0.8 ohms. If the amp could function at that impedance the d2 would get 80% of the power and the d4's would split the other 20%.

If the d2 were wired for 4 then wired parallel with the existing 4 ohm load you'd have 2 ohms at the amp and the 12 would get 50% power, the d4's would split the other 50%.