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| Rotel RA-820A taking care of the Front Channel over Pionner VSX-921 |
Let's look inside the beast :
- The green PCB is the Digital I/O board
- On the upper left corner, when can see the power supply.
- Of course the large radiator is covering the power amplifier board.
- The audio Signal processors and analog I/O are under the green PCB.
Let's find the pre-out signal !
We are looking for the pre-amp signal in order to extract it and feed a better amplifier. So we just have to find the wires between the DSP/Analog board and the amplifier...
Bingo ! Too bad we can't exactly see what's written ... But sure it's here !
Now let's find a convenient way to solder a bunch of RCA plugs... You will have to unscrew one support board and remove three plugs to access it ... no big deal!
Found it! A quick soldering and here we go, the left channel is available !
FYI :
1 : Front Left
2 : Gnd
...
9 : Front Right
10 : Gnd
The two main channels are extracted, let's pu everything back in place and enjoy the cristal clear sound out of a real amplifier !
Here we go !
Next post will be a small but usefull tip how to use Pioneer's VSX-921 integrated amplifier to drive a passive subwoofer (or bi-amp).
