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[tazinnuedo]

have you resolved your problem?

[tazinnuedo]

have you reset your drumbrain?
 
http://synthzone.com/midi/alesis/d4/d4.tip
 
(check your manual to know if it’s the good procedure before…)
 
 
 
francois

[tazinnuedo]

why reverse tip and sleeve wires for the head piezo on roland’s modules… what are the consequences???? (i have not reversed the wires on the head piezos… with a td10 expanded module and it works… so how reverse them?)

francois

[tazinnuedo]

maybe you can do this by molding a dome in cast acrylic from a true cymbal…

[tazinnuedo]

[happy mode mode on] [happy mode off]
 
do you an idea about the resistance value i can put for the main piezo???? (or the max to have no sound…) 100kO 1mO 100mO….????
 
and if i have unsterstood evrerything of the design… if i want less sensitivity for my aux piezo, r2 must be decreased (but with a min resistance  (100ko)    and if i want more sensitivity, r1  must be decreased…

[tazinnuedo]

so what is writen below the schema (with drawn piezos) isn’t good (or incmplete if we can put a variable pot near  r1):

For less “rim/edge sensitivity”, reduce the R2 value but DON’T replace it with a wire (100K to 1M is alright).  

    
 
similar question but not about this design…   if i put a resistance between the main piezo and the module, on the tip wire… does my sensitivity decrease?????  (on my module for the snare, sensitivity is at 2 or 3 / 32 scales… so i don’t have possibilities to have some fine adjustments) 
 
 

[tazinnuedo]

i think to rigidify the plastic hoop, inserting a pmma (2.5mm)ring into the inside ring of the muffl, below the foam ring…
and i will change the large plate, because it’s no stronger  (pmma 2.5mm)  and it’s easy to twist it…
the other problem of this sytem is that cost a little bit… (13 14 euros for a 13″ muffl…)

[tazinnuedo]

i tested it…  it works well!!! but it create an accoustic sound when you hit the mesh head…   i have kept the ring foam to avoid some retrig… and put some foam between the shell and the plastic ring and put 3 silent blocs to isolate the big plate to the cone plate support.
the only little problem is that the plastic ring is not very rigid…(the foam rigidifies a little bit)

this design works for me for a dual zone pad (piezo/piezo)(snare input on a td10) 

francois

[tazinnuedo]

and the pdf schematic is an update of the first one posted on the thread…  is that right????  (two mono pad in a stereo input…)
but, if i want to build a dual zone pad (for exemple tom’s input in a td10) i will have to start from the second schematic which is posted on the thread…and i don’t need to put some schottky diodes (just variable pot if i want)?? is that right???         (does the pot must be wired like in the pdf schematic???)
 
why in the first schematic it’s r2 which is changed to have less sensitivity and in the second  it’s r1 to adjust sensitivity?????

francois

[tazinnuedo]

does someone can tell me what is a schottky diode please???? is there a schematic about the new circuit with udpates? because i’m bad and i don’t understand where i have to insert a jumper…  ( the jumper is here to shorcut  one of the diodes???right???)
 
does the last photo represent the first schematic or the second???  i’m not sure but there there ‘s a lot af componant into the box and the second schematic no…
 
francois

[tazinnuedo]

I like it!!!
 i will test it soon… with an other board cut like a star, screwed on the shell, below this sytem, to put a rim piezo…. just to test the crosstalk between rim and main piezo…

francois

[Author]

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