Noisy Transmission after clutch change
 

I had changed the clutch, flywheel, pressure plate, and throwout bearing and ever since then ive had a rattling noise coming from the tranny when i let out the clutch. The noise stops completely when the clutch pedal is depressed but i cant quite pinpoint the source of the noise.. if anyone has some input on what it could be that would be great!
The noise started after i replaced the clutch and such.

well, id start with the obvious and check the clutch fork/throwout bearing. Pull the dust cover off the side and start the car. peek in thru that hole and look/listen for the culprit

could also be bearings/gear mesh inside the trans. when the clutch is depressed it allows the trans to stop spinning hence the noise going away. however without being there this is all just speculation