stree
25-02-2016, 16:52
I could do with some help on this please.
I have 2 sources, a deck+preamp on one side and a Raspberry Pi with a DAC on the other.........I may have a third later....so will wire up accordingly.
To select I have bought a 3 way 4 pole rotary switch, 12 pins on circumference and 4, ABC &D in the centre
I have done the continuity test and established pinouts for each of the three positions, as example, position 1 gives connections A=1 B=4 C=7 D=10, and so on.
I understand that I use 2 of the ABCD centre pins for out put, + for left and right centre pin .
Obviously these will correspond with the input connections for each as determined by the continuity test.
That leaves the - signal, the connections will be RCA , so outer shell connections.
I have looked up and read all I can find and am now hopelessly confused.........how do I connect the negative? string one connection across them? all Make each one part of a pair and switchable?
and that`s before audio ground etc...............arguments and theories........Or is the audio ground one and the same as the negative? or are they joined? what do I ground to?
The idea is simple, unbalanced unshielded RCA jacks using twin conductor cables, one + and one - for each port.
The RCA females will be in a bank of 3 pairs, close to the switch so only about 100mm cable run each, and the output will be a short pair of interconnects with the switch end soldered direct.
Any clues or guides of what to do in simple terms welcome, I have no end of guides of increasing complexity that are not much use.
Also, it is a BTL amp, but I suspect that has no impact on input considerations...???
I have 2 sources, a deck+preamp on one side and a Raspberry Pi with a DAC on the other.........I may have a third later....so will wire up accordingly.
To select I have bought a 3 way 4 pole rotary switch, 12 pins on circumference and 4, ABC &D in the centre
I have done the continuity test and established pinouts for each of the three positions, as example, position 1 gives connections A=1 B=4 C=7 D=10, and so on.
I understand that I use 2 of the ABCD centre pins for out put, + for left and right centre pin .
Obviously these will correspond with the input connections for each as determined by the continuity test.
That leaves the - signal, the connections will be RCA , so outer shell connections.
I have looked up and read all I can find and am now hopelessly confused.........how do I connect the negative? string one connection across them? all Make each one part of a pair and switchable?
and that`s before audio ground etc...............arguments and theories........Or is the audio ground one and the same as the negative? or are they joined? what do I ground to?
The idea is simple, unbalanced unshielded RCA jacks using twin conductor cables, one + and one - for each port.
The RCA females will be in a bank of 3 pairs, close to the switch so only about 100mm cable run each, and the output will be a short pair of interconnects with the switch end soldered direct.
Any clues or guides of what to do in simple terms welcome, I have no end of guides of increasing complexity that are not much use.
Also, it is a BTL amp, but I suspect that has no impact on input considerations...???