That works fine as well, but that is the line out I described as the " more common here on the forum ", wich isn't bad in any way... works like charm. The difference lays in the " 0.68 ohm line out; Since that's all I have over the cab/mixer/powerstage or what ever you want to drive, I loose less signal comparerd to having the other setup ( 1-5k/470ohm ) simply cause there's less resistance... Both ways works very well, the one with the less resistance have less lost of signal/freqs or what ever it is... There is an audioable difference, I've tried both.
The impediance ( with the cab ) to ground must be the cabs impediance thrue the lineout; 1x8+1x0.68 and since I happen to have a calculator laying around the result would be... hang on... 0.63ohms... take that in serie with the big on and you get 0.63+8= 8.63 ohm total from the main amp. If I'm using the reamping you do the same calculation with the small resistor and the resistance in th input of either the mixer or the PA head input... and both are well over several k's... you will NEVER go over 0.68 ohms no matter what you do, as long as you hook up the small resistor across the input of what ever your using.
This variant is very easy to build, suppose you have a big load for the mainamp, just hook up a simular resistor ( preferably an effect resistor ) of a small value in serie towoards ground, and hook up your other inputs ( amp, mixer or what ever)... I have an effect resistor of 0.68 ohm ( well actually I have four, two in serie and thos two in parralell, but I still get the same value, I just wanted to be on the safe side powerwise )...
