Rotel RB-970BX

Hmmm. In the 'This Isn't The Hitch Hikers' Guide to the Universe' master hifi repair manual for Rotel, documented fault number #57263 "Scratchy rendition at very low sound level" the solution listed is:

Replace the diflectorator under the putenacher and reset the donglewaffer. Power off and on and everything should be fine. WARNING: Only technicians with prior sarcasm inoculation should attempt this repair. The technician must remain grounded - i.e. make sure at least one foot is on a solid planetary surface at all times. If the correct conditions to execute this repair cannot be assured, take the faulty unit to an accredited amplifier repairer. It is known there are some accredited amplifier repairers on planet Earth.​
 
Rotel

Hi Mike
I think so. It was connected through a Rotel pre amp and I thought it was the pre-amp that was faulty. I then connected it via a Pioneer pre-amp and only hooked up one speaker(lots if wire pulling etc)
Thanks
Tielman
 
If what you describe is all that occurred when you moved the the amplifier, it is unlikely to have failed. More likely for both channels to sound faint and weak, is a common connection for both channels, such as signal ground. Before going further, you will need something like a multimeter to check the continuity or resistance of the grounded (i.e. the braided wire shield part of the input leads to the amplifier) connection to each amplifier input socket.

As a quick preliminary check though, you can test each input lead by briefly shorting the input leads at the source end, assuming they are standard RCA type leads. Turn the volume control to no more than 50% to test anything - you don't need to have a sudden blast of noise. Also, I'm sure you already know this but there are many settings for the input selection and tone control selector switches. If any of these is the wrong position, the signal will be almost inaudible - perhaps as you describe. Recheck your settings carefully before getting too concerned about damage.