I have a Fuchs modded Bandmaster with both 4 and 8 ohm outputs. I have an 8 ohm Tonespotter in there, and I have an extension cab I plan to put another 8 ohm speaker in. How should I wire this up? Should I install a jack on the lower panel of the combo and just run the wires from the extra tabs on the tonespotter to the jack? Is this parallel? What would my impedance be and so forth?