guillaume_pille":3572kfng said:Hi all,
because the SPEAKER out cannot be buffered, the ground of whatever you connect there will be connected to the ground of CAB M and your previous device (a preamp).
It may work and you will not break anything, but it's possible that you experience ground loops doing that. In that case, a DI (with isolation transformer) may be necessary.
When you connect a cabinet on that output, because the cabinet is a floating ground, you have no issue.
Just to be sure i understand this right, did you mean that to make sure i have no ground loops in my case, i would need to put a DI in between the "preamp out" and the "CAB M input" ?
Also, let's suppose i skip the "inserting a DI" (to prevent ground loops issues) part, I have a hard time seeing the difference (in terms of ground loops issues) between :
- inserting a regular fx pedal (say a delay pedal) in the fx loop of my amp (which is something lots of people do, and do not seem to have a specific ground loop issue this way)
- inserting a CAB M in the fx loop of my amp
guillaume_pille":3o7qikpr said:Just to be sure i understand this right, did you mean that to make sure i have no ground loops in my case, i would need to put a DI in between the "preamp out" and the "CAB M input" ?
You won't necessarily have an issue, but in that case a DI can help. It's worth trying it anyway.
guillaume_pille":3o7qikpr said:Also, let's suppose i skip the "inserting a DI" (to prevent ground loops issues) part, I have a hard time seeing the difference (in terms of ground loops issues) between :
- inserting a regular fx pedal (say a delay pedal) in the fx loop of my amp (which is something lots of people do, and do not seem to have a specific ground loop issue this way)
- inserting a CAB M in the fx loop of my amp
If the CAB M is just connected in and out to your amp, no difference. But if you plug it to your amp on one side, and then into a mixer, a soundcard, another distant device with a different grounding, things can get funny.