Post by Pyrofer on Nov 22, 2016 11:46:52 GMT
Not happy with the price/features of existing stereo SID boards I designed my own.
Brief feature rundown.
Both SIDs share normal address
no extra cabling to connect to address bus
Audio out goes via normal AV DIN plug
second SID audio out goes via the audio IN on the AV DIN.
No cutting/soldering or modding of the machine in any way.
It's designed to be a simply plug and play minimum hassle install to get sound out of both speakers.
Here is the board design. I basically copied the 128s existing audio out circuit for the second SID. I might need to tweak component values to get it sounding exactly like the existing one but it should work. For Stereo you just connect the second channel to the previous audio IN pin on the AV connector, this means no switches or sockets or jacks to fit into the machines case.
s5.postimg.org/hbqxr0auv/pseudo_SID.png
It's a no-frills board designed to be non-damaging to the host machine and present the cleanest solution in regards to cabling.
Comments?
(I would appreciate any serious input from people who understand electronics and can follow the PCB. I guess I should do a Schematic!)
Brief feature rundown.
Both SIDs share normal address
no extra cabling to connect to address bus
Audio out goes via normal AV DIN plug
second SID audio out goes via the audio IN on the AV DIN.
No cutting/soldering or modding of the machine in any way.
It's designed to be a simply plug and play minimum hassle install to get sound out of both speakers.
Here is the board design. I basically copied the 128s existing audio out circuit for the second SID. I might need to tweak component values to get it sounding exactly like the existing one but it should work. For Stereo you just connect the second channel to the previous audio IN pin on the AV connector, this means no switches or sockets or jacks to fit into the machines case.
s5.postimg.org/hbqxr0auv/pseudo_SID.png
It's a no-frills board designed to be non-damaging to the host machine and present the cleanest solution in regards to cabling.
Comments?
(I would appreciate any serious input from people who understand electronics and can follow the PCB. I guess I should do a Schematic!)
