Bad sound quality

Hi everyone,
After a long time without using my U-Mix Control Pro, today I tried to make some sound. But, I noticed the sound quality is weak. The subwoofer doesnt work, the mids and treble are weak.
I use a very simple setup: Macbook Pro and a DVD system that have AUX inputs. To test, I already used the DVD just with a pendrive connected to the USB input and the sound appears perfect. So, I think that the problem is on the software.
I have already installed the 3.3.11 version too.
Someone can help me?
Thanks.
After a long time without using my U-Mix Control Pro, today I tried to make some sound. But, I noticed the sound quality is weak. The subwoofer doesnt work, the mids and treble are weak.
I use a very simple setup: Macbook Pro and a DVD system that have AUX inputs. To test, I already used the DVD just with a pendrive connected to the USB input and the sound appears perfect. So, I think that the problem is on the software.
I have already installed the 3.3.11 version too.
Someone can help me?
Thanks.