Yes, I believe that's what you're hearing.
The "Cellos Espressivo" patch does the same thing on mine, and it's because of the way it's set up. It has a slow attack, and it builds and gets louder. You'll notice all of the "Cello Espressivo" patches have "mw" in the name of the patch. This allows you to adjust the attack for a slightly faster or slower attack with the modulation wheel. Unfortunately, the patch itself still builds a bit, but you can moderate it somewhat with the mod wheel.
It appears the only way to keep the level consistent is to alter the AMP envelope, as you're already aware. I found that
lowering the amplitude overall (the purple-ish line in the envelope) can help. (By default, it's at "1". Drop it to ".5" or so.) Another thing you could try is to change the "Amplitude Eg Velocity" and "Depth" settings. Crank the "Eg Velocity" to 100%, drop the "Depth" to around 50 or so, and turn on the limiter. That levels everything out, too! (I'm only half-serious about this suggestion.)
Another option is to use a different patch, like "Cellos Legato". It has a faster attack and a more "level" amp envelope. If you smooth out the attack a bit, you might just find the sound you want.
Hope that helps.
Steve
post edited by planetearth - 2010/02/09 00:00:53