I’m ok

Kick drum testing

I've been having problems with the kick drum for a while now. At first i was advised to do a system reset which worked for like 30 min.

Then i decided to change the sensor on the drum set, which, again, lasted for like 30 min.

Right now i'm doing some testing with the kick drum, i've torn it apart completely and i have the 1/4 jack and the sensor separated.

The point of the testing is to figure out were the if the problem is the sensor, the jack, or the computer.

as you can see in the pictures, the sensor and the jack are connected and i've been padding the sensor with my finger to see if i get a signal, and indeed there is, however is a very dim signal.


This rules out the possibility of the problem coming from the sensor, because it is transmitting a signal, and the computer, because it is understanding the incoming signal.

So i'm having doubts about the jack, which could be diminishing the signal somehow.

I've been thinking on buying a new 1/4 jack, but what the kick drum's jack has a micro circuit on top of it which i'm not really sure of its function and also, the casing of the jack would be a problem too.

Does anyone know if the jack with the micro circuit is a generic type of jack ? or is it something that would need to be ordered to Alesis? do they actually provide those?


also, i've been thinking about the possibility of attaching two sensors in parallel on the kick drum, would that be a problem?
1 person has
this problem
+1
This topic is no longer open for comments or replies.
  • The circuit on the jack has two resistors to slightly attenuate the output from the piezo and give it a fixed load.

    It seems unlikely that the jack itself is faulty, but it could have a cracked or dry joint on the circuit board - or the joint where the piezo wire connect to the circuit board, there are quite a few mentions of that being a problem on the dmdrummer forum.

    I'd try re-flowing each of the solder joints, including the ones under the hot melt glue. That can be chipped away with a small screwdriver.

    Some people remove the resistors or connect straight to the jack terminals when doing mods to the pads, you could try that without any other changes to the jack to see if it eliminates the problem. It will make it a bit more sensitive.

    You could also try a different piezo & use a standard jack trailing out the pad as a way of proving / disproving a fault in the pad - the piezo discs are very cheap on ebay or from electronics stores.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. happy, confident, thankful, excited indifferent, undecided, unconcerned sad, anxious, confused, frustrated kidding, amused, unsure, silly

  • Thank you, my biggest doubt was the possibility of the jack not functioning without the circuit board on top, thanks for clearing that out.

    I'll try with a new jack, given that the circuit is for micro-components, i dont have the tools or the skill to handle the soldering -_-.

    the piezo that you see in the picture is actually one that i bought at radio shack, so i have that covered. the one in the drumset is smaller (28mm i think) the one i'm using is 35mm, and i'm almost sure that the old one still works, i haven't tested that.

    On a separate note, can i put two sensors in parallel? will it mess with the signal going into the computer ?
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. happy, confident, thankful, excited indifferent, undecided, unconcerned sad, anxious, confused, frustrated kidding, amused, unsure, silly

  • I've not tried series or parallel sensors, but I have seen mention of people using two in series.

    Which drum type is it?

    I have the DM-10X, which uses an 8" single zone pad for the kick.

    I've modified all mine to mesh heads, using the Hellfire mod for the 8 & 10" pads and Gerdys mod for the 12" pads, plus Pearl muffle (mesh) heads.
    The sensor discs are all original.

    They all work extremely well, both feel and trigger / sound output.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. happy, confident, thankful, excited indifferent, undecided, unconcerned sad, anxious, confused, frustrated kidding, amused, unsure, silly

  • Now that you mention it, i might try changing the pads as well, at least the snare drum, to a mesh pad.

    I was able to connect the sensors in parallel, and it functions perfectly. the only problem i'm having now is the placement of the jack, given that the jack has a different shape, i'm not being able to place it where the original one was. This is giving me a headache.

    but i have to say, the sensitivity is back to normal.
  • (some HTML allowed)
    How does this make you feel?
    Add Image
    I'm

    e.g. happy, confident, thankful, excited indifferent, undecided, unconcerned sad, anxious, confused, frustrated kidding, amused, unsure, silly