Isobaric also called compound loading is basically two woofers mounted front to front or front to back with a very small airspace between them wired so the the cones move in the same direction. Advantages are half the distortion and that the pair only need 1/2 the cabinet volume behind them to achieve the same bass output. Disadvantages are half the impedance and the fact that you need two woofers.
In my Montana EPX i use this technique, each box use 4 woofers, 4 ohm wired in series parallel for a combined impedance of 4 ohms - tremendous bass out put for a relatively modest sized floor stander.
As always, good listening
Peter
In my Montana EPX i use this technique, each box use 4 woofers, 4 ohm wired in series parallel for a combined impedance of 4 ohms - tremendous bass out put for a relatively modest sized floor stander.
As always, good listening
Peter