Topic: DMIC-20 hacks: added optical out, replace SSM chips, added continuous gain pot

[poorlyconditioned]

I've done some mods on my DMIC20.  I think this is a really good rig if people are willing to play with it.

- replaced SSM2017 preamp chips with THAT1512 (samples ).  Simple plug and play upgrade, just replace chips in sockets.
- added optical output.  Simple mod: Part is TOTX177.  Put +5, ground, and pin #17 of CS8402A to the TOTX and put a 0.1uF between 5V and ground at the TOTX.  Dremmel a square hole in the front, and epoxy the TOTX from the inside.
- replaced gain switches and resistor arrays with a single 5K (dual, stereo) pot.  Mounted on front panel.

If you understood that geek-speak, go ahead and try this, and email me with questions.

Unfortunately I cannot do these mods for others, due to time constraints and shakey hands.  Sorry.

  Richard

[spyder9]

Pictures please!   

[Kindguy]

Post some pics please.

I've had one loaned out forever in the loner program. Almost forgot about it. Almost  it's in Team bama's hands.

Anyway with a little help I'd like to mod mine.

[poorlyconditioned]

Post some pics please.

I've had one loaned out forever in the loner program. Almost forgot about it. Almost  it's in Team bama's hands.

Anyway with a little help I'd like to mod mine.

OK, it might take me a few days to get around to this.  I've got three shows coming up this weekend!

  Richard

[baustin]

I've done some mods on my DMIC20.  I think this is a really good rig if people are willing to play with it.

- replaced SSM2017 preamp chips with THAT1512 (samples ).  Simple plug and play upgrade, just replace chips in sockets.
- added optical output.  Simple mod: Part is TOTX177.  Put +5, ground, and pin #17 of CS8402A to the TOTX and put a 0.1uF between 5V and ground at the TOTX.  Dremmel a square hole in the front, and epoxy the TOTX from the inside.
- replaced gain switches and resistor arrays with a single 5K (dual, stereo) pot.  Mounted on front panel.

If you understood that geek-speak, go ahead and try this, and email me with questions.

Unfortunately I cannot do these mods for others, due to time constraints and shakey hands.  Sorry.

  Richard

Richard,

My buddy and I may try doing this mod ourselves. I tried googling the part numbers with not much luck (I don't think?). Where would be a good place to look for these parts and what might we be looking at as far as cost?

-B

[setboy]

If you understood that geek-speak, go ahead and try this, and email me with questions.

i got most of that geek-speak. and what i didn't get i think comes from not having one to look at


Raphael