[mindonstrike]

Originally Posted by billyo

i am having second thoughts about your suggestion, not that it wont work, nor i'm criticising it, my question is if you turned down the headphone volume, you then have to turn up your board and in my opinion that will make the board work harder to reach or make your speakers work to its peak ( harder ) , correct me if i'm wrong ,what i do was i have my laptop volume high which is connected to one of the boards line in channel,and my board main volume is up to the unity gain, my speakers ( powered ) are on 12'oclock, and i just turned the channels gain down where my laptop is connected , works for me i havent heard a hum/noise for a while now..

What Mark is saying is that the signal to the headphones is an amplified signal that your board is not designed to handle. Your input channels are designed to work best with a specific range of voltages and impedances that the headphone out is not giving. Lowering the amplification of the headphone out will get you closer to that ideal. The fact that you have to turn down the gain on the channel is evidence that the signal is too hot. The ideal signal from source to amplifier would be one that reqires no amplifying or trimming (unity) of the gains until you get to the amplifier itself, and still keep the boards faders within 5 or 10 decibals +/-. In the real world of course the ideal is impossible but the closer you can get the better your results.

IMHO
Sam