Mnats 1176 rev D

Sillen · May 30, 2013

Hello
Anyone that built this one here? Regarding R44 (Tracking adjust trim pot) on the PCB.. On the pcb it says it should be a 2k trimmer resistor on R44 but on the BOM page it says that there should be a 1k trimmer resistor on the R44 spot. Hmmm and I got neither a 1k or 2k trimmer resistor for some reason

Anyone know anything about this?

MartyMart · May 30, 2013

It's meant to be a 2k trimmer, IIRC I found a 2k2 from farnell.

That would work fine.

Marty.

Sillen · May 31, 2013

Ok thanks! And by the way on the ratio circuit board there's supposed to be 2 lorlin rotary switches right? Because they weren't on hairballs audios finished cart either. Sorry for the newbie questions, it's my first build :/

/Isak

evilcat · May 31, 2013

Rotary switches, right, lorlin, I'm not sure. I've used Alpha switches like the ones on Mnats site (there's a ref on the slam ratio guide). Hairball provided switch bank like on original 1176.
Good luck on your build. Take your time, organize your wiring and everything should be fine !

Ben

Sillen · Jun 4, 2013

Another question comes here if anyone knows about it.

The zero adjust, R71, does it work with a 2k trimmer instead of the potentiometer? And btw how do I attach all the knobs to the potentiometers?

evilcat · Jun 4, 2013

Yep, a potentiometer is a trimmer.
For the knobs, it depends on your pots and your knobs. Usually you screw them on the pots.

Sillen · Jun 6, 2013

At the Q bias calibration step, could you simply desolder pad 22 instead of shorting it like in mnats video? (since I don't think i have the equipment to do so)

Sillen · Jun 6, 2013

nvm, it's not even powering up.. This will get tough :/

abechap024 · Jun 6, 2013

You should look at post in the dedicated thread...it helps people building it to benefit from yours and their questions

evilcat · Jun 6, 2013

abechap024 said:
You should look at post in the dedicated thread...it helps people building it to benefit from yours and their questions

+1

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