Why can't I get any sound out of my Pro Tools MBox?

[QH]

Hi,

I have a Windows XP service pack 2 PC of a good spec, with a Terratec
DMX 6Fire 24/96 semi professional soundcard, that is running Pro Tools
LE 6.9. I am trying to setup a Midi studio setup with a Technics KN2600
keyboard as the Midi input (this is connected to the PC via a USB
connection and the drivers are fully installed). I have plugged my
headphones into the appropriate slot on the front of my MBox, but no
sound is coming out. I know that Pro Tools is reading some data as when
I am 'recording' or even tapping a key, I can see the green signal on
the mix window going up and down, but I can hear nothing at all on the
headphones. Similarly, when I play back there is silence, though on the
edit window I can clearly see the blocks of data that have been
recorded. I have adjusted the settings on the front of the MBox to many
combinations, but no result. I have turned the headphones right up and
there is nothing but hiss (they do work as they have tested them on
other things). I am at a loss to explain why this is happening, but if
anyone can offer some advice I would be very grateful, as the MBox is
utterly useless to me in its current condition.

Best regards,

QH

 

[Guest]

Plug them in to the headphone jack on the back of the PC, which is
your soundcard.

 

[Phillips]

Control Panel/Sound And Audio Devices/Audio/MIDI Music Playback... check the
correct MIDI device in the drop down list. Also, test your speakers under
the Volume tab....
Micahel