Yamaha DTXpress/DTXplorer/DTXtreme

Hi everybody,

I received yesterday a Yamaha TMX which I tried to connect to my Roland Pads
PD-31.

It seems to work but only if I strike 1/4 notes

If I try to strike quicker notes 1/8 1/16 the TMX stops triggering, no sound and
I have to restart the TMX.....

I had the same problem with my Simmons Drum Huggers interface......

So what could this be please?

Should I change the piezos inside my PD-31?

Sometimes I get an error message on my TMX: error receiving....

Any Help please

thanks

Max

Max,

This is going to be tricky.  Antique is the word that springs to mind!  

My best guess would be the rejection settings - page 18 of the manual.  Take it down to zero (or whatever the lowest value is) for each input and see what happens.

Keith.

Max,

One other suggestion - if you have just bought this second hand do a factory reset first - page 30 of the manual. Turn on while holding UTILITY & STORE.  You will lose all your kits/settings though.

Keith.

Thanks Keith

but this was the first thing I did.

Yesterday I found out that the performances labelled with T  work much better, But the pads stop working after a couple of quick strikes

very strange

I'll try out the rejection, actually it's on 2

I connected my selfmade Trigger shaker but this works !

thanks very much

MAX

--- In DTXpress@yahoogroups.com, "keith1200rs" <keith@...> wrote:

>
> Max,
> 
> One other suggestion - if you have just bought this second hand do a factory reset first - page 30 of the manual. Turn on while holding UTILITY & STORE.  You will lose all your kits/settings though.
> 
> Keith.
>

--- In DTXpress@yahoogroups.com, "testmb" <testmb@...> wrote:
> 
> I'll try out the rejection, actually it's on 2
> 

Max,

"2" is supposed to mean 2ms which is quite short.  If true, it shouldn't cause the problem but try reducing it anyway.  There is a possibility of capacitive pump up, though I don't know why that should be the case.  If you are handy with a soldering iron, put a 100k resistor across the pad and see if that helps.

Keith.

Keith,

should I solder the resistor in parallel circuit or series connection

Thanks very much

Max

--- In DTXpress@yahoogroups.com, "keith1200rs" <keith@...> wrote:

>
> --- In DTXpress@yahoogroups.com, "testmb" <testmb@> wrote:
> > 
> > I'll try out the rejection, actually it's on 2
> > 
> 
> Max,
> 
> "2" is supposed to mean 2ms which is quite short.  If true, it shouldn't cause the problem but try reducing it anyway.  There is a possibility of capacitive pump up, though I don't know why that should be the case.  If you are handy with a soldering iron, put a 100k resistor across the pad and see if that helps.
> 
> Keith.
>

--- In DTXpress@yahoogroups.com, "testmb" <testmb@...> wrote:
>
> Keith,
> 
> should I solder the resistor in parallel circuit or series connection
> 
Max,

Parallel.  The idea is to help discharge any capacitance, such as the piezo self capacitance.  It may have no effect, but is worth trying.

Keith.

Keith,

what you are saying sounds good

I'm thinking that the PD-31 has a special board, not just a piezo

with a connector, as you can connect for example only input 4 and strike on zone 2,3,4 to trigger the same input

http://media.rolandus.com/manuals/PD-11_21_31_OM.pdf

Many thanks

Max 

--- In DTXpress@yahoogroups.com, "keith1200rs" <keith@...> wrote:

>
> 
> 
> --- In DTXpress@yahoogroups.com, "testmb" <testmb@> wrote:
> >
> > Keith,
> > 
> > should I solder the resistor in parallel circuit or series connection
> > 
> Max,
> 
> Parallel.  The idea is to help discharge any capacitance, such as the piezo self capacitance.  It may have no effect, but is worth trying.
> 
> Keith.
>

--- In DTXpress@yahoogroups.com, "testmb" <testmb@...> wrote:
>
> Keith,
> 
> what you are saying sounds good
> 
> I'm thinking that the PD-31 has a special board, not just a piezo
> 
> with a connector, as you can connect for example only input 4 and strike on zone 2,3,4 to trigger the same input
> 
Max,

If you are feeling brave it might be worthwhile trying to see what is inside the Roland pads.  Otherwise, if you have a multimeter you could try to see what the rims of the pads do.  My guess is that they are rim switches but as they use four jacks and the function of the jack changes when you plug another jack in it suggests some switching is going on, but I am not sure what.  There are free/low cost programs which allow you to look at signals like an oscilloscope using a PC audio input which may help find out what is going on (or obviously an oscilloscope if you have one!).

Keith.

Hi Keith,

what a blame; I had just one cable to test, waiting for my multicore

The cable was bad.....

Everything works now

sorry sorry

Max

--- In DTXpress@yahoogroups.com, "keith1200rs" <keith@...> wrote:

>
> --- In DTXpress@yahoogroups.com, "testmb" <testmb@> wrote:
> >
> > Keith,
> > 
> > what you are saying sounds good
> > 
> > I'm thinking that the PD-31 has a special board, not just a piezo
> > 
> > with a connector, as you can connect for example only input 4 and strike on zone 2,3,4 to trigger the same input
> > 
> Max,
> 
> If you are feeling brave it might be worthwhile trying to see what is inside the Roland pads.  Otherwise, if you have a multimeter you could try to see what the rims of the pads do.  My guess is that they are rim switches but as they use four jacks and the function of the jack changes when you plug another jack in it suggests some switching is going on, but I am not sure what.  There are free/low cost programs which allow you to look at signals like an oscilloscope using a PC audio input which may help find out what is going on (or obviously an oscilloscope if you have one!).
> 
> Keith.
>

--- In DTXpress@yahoogroups.com, "testmb" <testmb@...> wrote:
>
> Hi Keith,
> 
> what a blame; I had just one cable to test, waiting for my multicore
> 
> The cable was bad.....
> 
> Everything works now
> 
> sorry sorry

Max,

No problem.  I'm glad it's all working now, and an easy solution.

Keith.