Variable Phasing circuit

[rh1530]

I've seen subwoofers with Variable Phasing control instead of the simple phasing switch does anyone know where i can find a schematic diagram so can include this control on my home subwoofer amp and cabinet?

 

[TLS Guy]

I've seen subwoofers with Variable Phasing control instead of the simple phasing switch does anyone know where i can find a schematic diagram so can include this control on my home subwoofer amp and cabinet?

Here you go. These types of circuits are actually quite complex.