crossover question

[nick3470 10+ year member]

this question is actually for my home audio system

i have 2 4ohm subs, and im going to wire them together for an 8 ohm load (series wiring)

would i put one inductor on poitive side of the first sub, then one in the connection between the first neg and second pos?

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[maylar 10+ year member]

No. Treat them as one sub.

One inductor in series with the pos wire of the first sub will give you a 1st order lowpass filter. Add a cap from there to the neg of the 2nd sub and you get a second order filter.

 

[nick3470 10+ year member]

No. Treat them as one sub.
One inductor in series with the pos wire of the first sub will give you a 1st order low pass filter. Add a cap from there to the neg of the 2nd sub and you get a second order filter.

So just treat it as a DVC sub?

Another thing, what are the formulas for wiring 3 speakers together? In a parallel/series wiring, like having my 6 1/2 and my 5 in a series (2x8 ohm=16 ohm) then wiring it with my 3/8 tweeter (another 8 ohm) in parallel

 

[maylar 10+ year member]

RT = 1 / (1/R1 + 1/R2... etc)

Rt = 1 / (1/16 + 1/8)

= 1 / (.0625 + .125)

= 1 / 0.1875

= 5.33 ohms