Master Sensitivity Pot?

[dmitri]

I would recommend to find a way to dampen the piezo on a pad/cymbal first.
If you cannot do this, then I'd recommend to use a trimmer like this: http://uk.farnell.com/tyco-electronics/ ... dp/8866996 - cheap and small.

[ignotus]

This isn't fun to do at all, but it was the only way to dampen my sizzling hot piezos, and it works like a charm. But, understandably, if you can, avoid doing this

[gabriel1712]

Holy... It's a good reminder to aim for the simple solutions first! Thanks for sharing Ignotus.

My mesh snare/toms are super-easy to mechanically dampen. Here's a picture of the drum. I did some experiementing with thick (½mm) rubber insolation tape and it only took one layer between the piezo and the mesh to get below 900. However I'm still suffering from huge variations in velocity doing steady strokes. Different curves doesn't seem to have much effect. My old module is playing the mesh drums rock steady, so I take comfort in knowing there's a solution.

I'll make a separate thread on that issue, so the solution doesn't get burried here, once I get the time to do thorough analyzes and experimentations.

I can't really see a none-destructive way to dampen the hot piezo/switch cymbals. They are from Roland (CY-5 and CY-8) and the piezo is glued to the bow.. Besides there's plenty of room in the cymbal enclosure to add a trimpot and tbh I start every morning saluting my Yahama with the build-in trimpot

[fuzzysnuggleduck]

I'm also in this same boat.

My Hart pads are pretty hot and I had to use voltage dividers to get most of my high levels down below 900. I'm looking towards using pots for when I get the MD into a permanent case but dang... 32 pots is a lot.

[jeffbeckib]

Would this work as well? I'm not sure how to identify the correct wattage.

http://www.radioshack.com/product/index ... ab=summary

I would recommend to find a way to dampen the piezo on a pad/cymbal first.
If you cannot do this, then I'd recommend to use a trimmer like this: http://uk.farnell.com/tyco-electronics/ ... dp/8866996 - cheap and small.

[jman 31]

Would this work as well? I'm not sure how to identify the correct wattage.

http://www.radioshack.com/product/index ... ab=summary

I would recommend to find a way to dampen the piezo on a pad/cymbal first.
If you cannot do this, then I'd recommend to use a trimmer like this: http://uk.farnell.com/tyco-electronics/ ... dp/8866996 - cheap and small.

Dmitri recommends a resistor value between 10K and 47K so I would probably go with the 50K model to get full range of adjustment. That's just my opinion though. He recommended a 10K in his post so maybe that's what is best.

[jeffbeckib]

I'm more concerned about the other specs, watts, resistance etc. for example do all 10K pots have a resistance of +/- 25%

Would this work as well? I'm not sure how to identify the correct wattage.

http://www.radioshack.com/product/index ... ab=summary

I would recommend to find a way to dampen the piezo on a pad/cymbal first.
If you cannot do this, then I'd recommend to use a trimmer like this: http://uk.farnell.com/tyco-electronics/ ... dp/8866996 - cheap and small.

Dmitri recommends a resistor value between 10K and 47K so I would probably go with the 50K model to get full range of adjustment. That's just my opinion though. He recommended a 10K in his post so maybe that's what is best.

[jman 31]

You should be fine with those that you were looking at. The resistance percentage is fine. Almost any linear pot should work for this application.

[jeffbeckib]

You should be fine with those that you were looking at. The resistance percentage is fine. Almost any linear pot should work for this application.

That's all I needed to know, thanks very much. Now I just have to go find that schematic that shows how it's wired. I'm gonna wire it directly to the drum itself.

[jman 31]

If you find one, let me know. I will probably design a PCB for it for my megadrum that will go inline between the Magadrum PCB and the Inputs PCB. Should be fairly simple though like synthex posted earlier in this thread. Just repeat this for all of the pads that are to hot. Middle pin is the wiper. the other two really don't matter unless you want to make sure that they all turn clockwise or counterclockwise for the control. All of the grounds will tie to the one ground leg from the megadrum board.



or: