Quoted from Pinballpal:
Now they were 3. I just got off the phone with tech support. We are going to be doing some trouble shooting when they email me back.
I connected an active set of active Logitec computer speakers
directly to the DI computer. The sound is much much better !
- the tuner pcb is broken or
- the speaker are bad (unlikely, will test to plug in the pc speakers to the amplifier baord) ) or
- the cables are bad (they look pretty cheap) or
- EMP due the cables and speakers are right next to the computer
maybe ferrite will help ... I will check that
I also informed JJP tech team.
A friend of mine had this with aftermarket speakers where the membrane from one speaker went loose. He glued it and okay .. also an option .. that means while playing unplugging one speaker after the other.