Zero asembly

[flatmax]

Hi there,

I think this is the polarity of the microphone. Assuming the case is GND, then you can see the "-" leg has traces to the case.

Microhpone polarity.

mic.jpg (205.27 KiB) Viewed 5884 times

Please let me know if this works as expected.

thanks
Matt

[flatmax]

Hi Rob
Should the RCA jacks be soldered or they should work fine without soldering?

I wouldn't trust the contact without soldering.

Matt

[flatmax]

I would connect it in reverse !
The case is connected to the ground - the bright green lines indicate the ground connections between the pad and the edge casing.

Audio injector zero mic polarity

ppi0.mic.polarity.jpg (235.43 KiB) Viewed 5800 times

Matt

[simonalia]

It was the best among two and the asembly time seriously

[johnelle]

So while I am ordering the pots from Digi-key I would like to order the connectors so I can have connectors on both the "use pot" and "straight" locations.

Could you list the digi-key part no for the outboard connectors?

Also any particular recommendation from the 50 or so pots listed would be nice.

[flatmax]

Regarding the pots, perhaps a 100k Ohm pot would work nicely, ganged (2 in the one package). I would try to select the ones with metal shafts if available and try to find plastic knobs because sometimes touching the metal gives noise.

Regarding the plastic connectors ... they are called jst xh.
Here are example male headers :
https://www.digikey.com.au/products/en/ ... ageSize=25

For the cable, you can also probably get that from digikey, or perhaps ebay. I did a search for jst xh 3 pin :
https://www.ebay.com.au/sch/i.html?_fro ... n&_sacat=0

Hope that helps.
Matt