von arnsman » 21. Jun 2016, 11:24
Danke Happyfreddy,
diese Änderungen wurden gemacht, vorher funktionierte der Main Vol Poti noch:
However, for stereo rotary simulation output some hardware modifications are due:
Rotary simulation output jack of XB2 kit jack board is only wired in mono. Cut PCB tracks to "hot" rotary output jack pins and wire directly ro HX3 mainboard PL17 solder lugs. Rotary output is now stereo, so an Y- or stereo instrument cable must be used.
Headphone amp on old XB2 mk2 kit is only mono. Track below headphone opamp connecting pin 1 and 7 must be cut. Pins 1 and 2 must be wired through 1k resistor beneath chip to PL17 of HX3 mk2 board or to re-wired rotary output jack.
Very old kits also have a "shorting swell jack insertion" hardware bug; the plug shortens power supply when it is just inserted. Bend the "ring" switch "normally closed" contact down so it does not come into contact with "ring" tab. Or cut the track leading to "normally closed" pin.
Könnte probehalber das Kit in meine zweite XB-2 mk3/4 einbauen, aber "never touch a running system" und die ist wirklich sowas von super:-)))
Grüsse Arne
Danke Happyfreddy,
diese Änderungen wurden gemacht, vorher funktionierte der Main Vol Poti noch:
However, for stereo rotary simulation output some hardware modifications are due:
Rotary simulation output jack of XB2 kit jack board is only wired in mono. Cut PCB tracks to "hot" rotary output jack pins and wire directly ro HX3 mainboard PL17 solder lugs. Rotary output is now stereo, so an Y- or stereo instrument cable must be used.
Headphone amp on old XB2 mk2 kit is only mono. Track below headphone opamp connecting pin 1 and 7 must be cut. Pins 1 and 2 must be wired through 1k resistor beneath chip to PL17 of HX3 mk2 board or to re-wired rotary output jack.
Very old kits also have a "shorting swell jack insertion" hardware bug; the plug shortens power supply when it is just inserted. Bend the "ring" switch "normally closed" contact down so it does not come into contact with "ring" tab. Or cut the track leading to "normally closed" pin.
Könnte probehalber das Kit in meine zweite XB-2 mk3/4 einbauen, aber "never touch a running system" und die ist wirklich sowas von super:-)))
Grüsse Arne