Anyone know what the wall wort is for the foot switching option on a Weber Mini Mass?

[olddawg]

I left the damn wall wort at a gig on a dark stage. There are no specs on the back of the unit and I'm trying to contact Weber. Does anyone know the voltage, current and plug orientation?

[olddawg]

So... Weber doesn't answer their damn phone. I left a message and an Email. But... I took it apart. They just have a big black relay with no markings connected to the power jack with the center positive and the footswitch jack with no other circuitry. I tried a 300ma 9vdc power supply I had laying around and it works. It doesn't pull it down below 9v when engaged. Not sure if it's really a 9v relay but nothing is getting warm and it works. Probably anything close would work!

[g1]

On the website they show 6V adapter for some of the other attenuator footswitches, but no mention of current or polarity. But you have figured out the polarity and found something that works, I doubt 3V extra will cause any problem.

[olddawg]

On the website they show 6V adapter for some of the other attenuator footswitches, but no mention of current or polarity. But you have figured out the polarity and found something that works, I doubt 3V extra will cause any problem.

I was more concerned with the current requirement because of the big ass relay. But it seems to be fine. I seem to remember the power supply being 1 amp. Doesn't mean it actually needed that much current. 300ma seems enough.

[olddawg]

So Weber got back to me. What a cf. They use a 7.5vdc supply at at 500ma. Anyone think a 9vdc supply will damage the relay coil? I guess I could put a couple of diodes in series to drop the voltage a volt or so, lol.

[J M Fahey]

Maybe, but you could also measure the coil resistance and add a series resistor, say, 20% of that value.
That would turn it into a 7.5*1.2=9V relay, for all practical purposes.