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Voltage Divider and a TD-9 Kit

PostPosted: Tue Oct 04, 2016 5:33 pm
by Qudeid
I've used the search and haven't found too much help other than a voltage divider should be used if pads are too hot... As it seems it's the case with all my pads (They are the stock mesh heads from an old TD-9 Kit, so PD-105 for snare and PD-85 for Toms).
Going through the procedure of adjusting high level I consistenly get values of around a 1000 while still getting 127 velocity with, what feels to me, moderate hits.
I guess that qualifies me for voltages dividers, but here is the big question... How do I actually do that? Is it just a trim potentiometer before the input? If so what kind?

Also, on a side note, I've installed the positional sensing add on I got from dmitri. With this installed it seems not all hits are being correctly received or interpreted as such. I can't do rolls, that I can without the addon. Ever other hit is just not happening. I've shorted the port that provides +5V, but didn't make a difference.

Thanks in advance!
Qudeid

Re: Voltage Divider and a TD-9 Kit

PostPosted: Tue Oct 04, 2016 6:54 pm
by dmitri
Qudeid wrote:I've used the search and haven't found too much help other than a voltage divider should be used if pads are too hot... As it seems it's the case with all my pads (They are the stock mesh heads from an old TD-9 Kit, so PD-105 for snare and PD-85 for Toms).
Going through the procedure of adjusting high level I consistenly get values of around a 1000 while still getting 127 velocity with, what feels to me, moderate hits.
I guess that qualifies me for voltages dividers, but here is the big question... How do I actually do that? Is it just a trim potentiometer before the input? If so what kind?

I guess you already lowered Gain to 0. In this case see http://www.megadrum.info/forums/viewtop ... 911#p11911
Also, on a side note, I've installed the positional sensing add on I got from dmitri. With this installed it seems not all hits are being correctly received or interpreted as such. I can't do rolls, that I can without the addon. Ever other hit is just not happening. I've shorted the port that provides +5V, but didn't make a difference.

Inputs with precision rectifiers need different settings from standard inputs. Post a screenshot with a specific settings for a pads and describe a problem with these settings in more details.

Re: Voltage Divider and a TD-9 Kit

PostPosted: Tue Oct 04, 2016 7:13 pm
by Qudeid
Yes, all Gains are at 0. Even enabled the low gains option (as I've read it might help, but didn't). Thanks for the schematics, I sifted through 10 pages of results from "voltage divider" without finding them :D. So, 47k trim potis it's gonna be!

As to the positional sensing. I even lowered the threshold to 0 and it didn't even trigger by itself, which it did before. Although I never tried to enable the positional sensing option. I thought you could tell me something right away without needing specific settings.
I'll take it one step at a time as positional sensing is a nice to have currently. Lower priority ;). Anyhow thanks!

Re: Voltage Divider and a TD-9 Kit

PostPosted: Tue Oct 04, 2016 9:35 pm
by airflamesred
Qudeid wrote:Going through the procedure of adjusting high level I consistenly get values of around a 1000 while still getting 127 velocity with, what feels to me, moderate hits.

Just playing Devils advocate here on the back of not seeing these results before. Is the head tentioned correctly?