User manual ALESIS D4 TRIGGER SETUO GUIDE

[. . . ] When properly adjusted, this parameter defeats "double triggering " by allowing the D4 to determine which signals are actual hits, and which are secondary decay signals. The NOISE parameter allows you to control the noise floor, or the signal level threshold that an exterior vibration or sound must exceed before it will trigger a drum sound. This is used mostly in situations where the stage volume and vibrations are strong enough to "rattle" the drum hardware to such a point that the D4 "thinks" these vibrations are actual hits. This is the signal strength that the transducer is sending to the triggers in the D4, It's adjustment is very similar to that of a tape recorder's VU meter. [. . . ] Crosstalk is when you hit the snare pad and the tom pad also triggers. This is usually the result of stand vibrations causing the pad (the tom 1 in this case) to trigger. The important thing to determine is which pad needs the XTALK adjustment. Remember, the trigger that needs adjustment is the pad that is false triggering, not the pad being struck. So, if you are hitting the snare pad and the tom 1 pad triggers, adjust the tom pad, not the snare pad. Press the Ext Trig button twice to enter the page showing the parameters for XTALK DCAY, and NOISE. After selecting the desired trigger (tom 1), place the cursor under the XTALK parameter value. Now, gradually increase the XTALK level of the tom 1 trigger until it stops triggering when you hit the snare pad (00 is minimum, 99 maximum). A properly adjusted crosstalk level will stop the pad's interaction, and still allow you to play quick hits without loosing any notes. 8. DECAY Note: In this scenario we will use only the snare pad. Depending on the type of pads being used and your mounting configuration, you may be experiencing some "double triggering". If shortly after the initial strike to the snare pad it re"double triggering". triggers or sounds a second time, the pad is This can be controlled by altering the DCAY parameter value. Gradually increase the value until the snare stops double triggering on hard hits. A properly adjusted DCAY parameter will end double triggering, and still allow you to play fast, repetitive hits on the snare pad. NOISE Nofe: In this scenario we will be using the tom 1 and the tom 2 pads in a live performance situation. The two tom pads are mounted together on a single floor stand, and the crosstalk and other parameters have already been correctly adjusted. When you play the pads while no other instruments are being sounded, all of the hits are triggering and tracking properly. Now as the band begins and the stage volume is very loud, the stage starts trembling which causes the drum hardware to vibrate. At times the tom 1 and the tom 2 pad are triggering when not being played. This is because the D4 is interpreting the signals from the stand vibrations as hits. By adjusting the NOISE parameter the D4 can determine which signals are vibrations caused by the surrounding noise level, and which signals are actual hits. Increase the value to a level that will stop the pad from false triggering when the strong vibrations occur. If the triggering is frequent and strong, try starting with an increaseof 20 or more. [. . . ] However, when using this technique it is usually necessary to install an audio jack into the drum shell to connect the audio cable to the trigger. Muffling Another important part of triggering from acoustic drums is the degree of muffling you apply to your drums. The amount a head vibrates when it is struck is what causes most of the problems related to triggering from an acoustic drum. I know most drummers don't want to put a lot of tape or muffling on their heads, but the degree of improvement it makes may be well worth at least a little sacrifice. [. . . ]