Re: BlueSaab Legacy Amp PCB?

Posted by Seth on Nov 16, 2016; 9:16pm
URL: http://bluesaab-forum.90.s1.nabble.com/BlueSaab-Legacy-Amp-PCB-tp785p804.html

sbt wrote

Sure, the pcb mounting is a serious concern. There are two options I can see:

1) mod the legacy amp pcb so that it's wider and extends to the mounting bosses and mount the orginal board upside down at the top of the box. Then, the connect/disconnect strain goes directly to the bosses; or at least two of the them near the connector.
2) stick with the plan I suggested, but replace the internal mounting screws for the CDC connector with longer screws and bushes that clamp the two boards together with the connector as well.

It's also going to be necessary to run all 8 wires from the bluesaab pcb to the legacy adapter; the legacy adapter will "pass thru" the car power, gnd, and i-bus connections.

I'm not convinced that using longer screws to mount things will be enough support for the connector. The bosses are only 1/4" high, and as it is now, the CDC is almost in line with them, which makes for great support. When you move the connector to go through a vertical screw mount and then push on the top, the boss's are not gonna hold that torque at all.

Honestly, I would suggest the best way at the moment is to desolder the 4 speaker pins, bend them up and out, and then solder wires as necessary. Obviously you're still gonna need to solder 10 wires; 4 speaker in, 4 speaker out, and 3.3v and gnd to the amp pcb. it's a lot of work.

If people want, I can post the pcb as-is, and they can go the heat shrink method...or we can brainstorm some more...or people can just make a v5.0+ module