The sub outs are dry; only the main outs carry FX.

Or are you talking about the MIX OUTPUT parameters? 

If so, take a look at the "Output Section & Effects Processors" illustration in any of the P2k-based manuals. Two things are being merged into one subsystem: (1) routing to the hardware outs (Main, Sub1, Sub2) and (2) internal routing and control of the audio to the FX processors. I found it helpful to think of them independently. 

The send busses determine how much of your audio goes to the FX processors. 

In addition (but really a separate function in my way of thinking about it), the send busses (via the MIX OUTPUT parameter) determine which hardware output gets the audio. Consider this:

L1 MIX OUTPUT
Send2->sub1

This says, for layer 1 of the current preset, using the Send2 bus, place the audio on the output jacks labelled SUB1. (It will be dry.)

I am a little confused when you say "in channel 1" because the send busses are global; there aren't send busses for each individual channel.

Also, in the chart, notice the jack detect switches. If you do not have anything plugged into the sub outs, you will not even see the sub outs listed in the MIX OUTPUT display. All the sends will be directed to main.

Since you are seeing sub1 out as an option, I assume you have something plugged into sub1. The question then becomes, which outs are you listening to when you notice the change in audio? (For example, you might have sub1 connected to an external effects processor.)

Another possibility would be to test your FX RAM (via diagnostics mode). I discovered some strange noises coming from my main outs (P2500). Somehow the FX RAM is not working properly and the diagnostics test comes up as "FAILED." Fortunately, since sub1 and sub2 do not use the FX subsystem, I can use those.

I hope this helps. Let us know what happens.

--Steve

--- In p2k@yahoogroups.com, "daniele" <danielesamas@...> wrote:
>
> When in channel 1 i switch from main output to sub output 1 i notice a loss of volume and a strange amount of reverb, even if i turn to zero all the percentages of the 2 FX send.
> 
> Is it normal or am i missing something?
> 
> Dan
>