e-licktronic Forum

I am currently tuning my Nava and noticed surprising peak voltages of the ENV2 of the Bassdrum.

I would have expected that without accent, the peak voltage would have been half of with accent.

It is not: at R41, I observe 9V without accent, 12V with accent on my Nava
With the same probe, same oscilloscope, I observe 2.1V without accent, 4.8V with accent on a TR909 I borrowed (which has issues).

What should be the peak voltages of ENV2 with and without accent?

In the picture below:
- upper window: Nava, 1st&3rd peak is without accent, 2nd peak is with accent
- lower window: TR909, 1st&3rd peak is with accent, 2nd peak is without accent

Here is a comparison between a TR909 (in red) and the Nava (in blue) with a pattern alternating with accent and without accent, played quickly:

ENV2 :

This graph has been taken in AC mode. In DC mode the oscilloscope shows the same ratios without accent vs with accent:
- 1/2 for the TR909
- 2/3 for the Nava with firmware 1.023.

The issue actually comes from the level driven by the DAC when the instrument is played with accent.
A firmware update with the same ratios as the TR909 (or a way to control the ratios for each instrument) would be welcome.

It is actually not an issue specific to my nava but likely an issue of the software (and/or hardware).

For futher information, I posted my observations on this issue in this thread: viewtopic.php?f=25&t=1425