I just want to make sure Im understanding the Speaker impedance correctly.....I have an Ampeg B2R...it has 2 - 1/4" speaker outs on the back. Its rated at 200W at 8 Ohms/350 at 4 Ohms. I have 2 - 8 Ohm 410 cabs....by running both separately plugged into each of the speaker outs, Im at 4 Ohms right? And therefore getting the full benefit of the amps power? If I use one speaker out and then connect the 2nd cab off of the 1st, then what changes? Thanks in advance folks! Im learning so much from TB, you guys are the greatest!