POLL: How many have of you dealt with the infamous grond loop noise?

chris350 · 08-12-2009, 08:47 PM

Have you had that whining noise through your speakers lately ?

malcom2073 · 08-12-2009, 08:54 PM

I have. I went DC-DC and haven't had a problem since! :-D :-D

chris350 · 08-12-2009, 08:58 PM

Quote: Originally Posted by malcom2073

I have. I went DC-DC and haven't had a problem since! :-D :-D

what were you using before? inverter?

malcom2073 · 08-12-2009, 08:59 PM

Yeah, I was using an inverter + normal desktop PSU. Even with everything grounded well, I still got a whine at low RPM.

chris350 · 08-12-2009, 09:06 PM

oh I see...well my project is almost coming full circle now...I hope i don't get that sound...all I have to do is get the pc wired up...everything is in place for it..

chris350 · 08-13-2009, 02:42 AM

*bump*

mentor · 08-13-2009, 03:19 AM

I have had various grounding issues but all resolved thanks to you guys.

My Setup:
Toshiba satellite 2410 laptop (XP SP2)
Riderunner frontend
LILO Classic III DAC
Kicker KQ9 Crossover/Equalizer
4 Channel Amp to drive mid range and tweeters (Front + Back)
D Class Sub Amp + 12 inch dual voice coil sub
Custom power module (DC-DC)

1. Humming noise when playing audio
Sol: Replaced cheap interconnects with branded shielded cables from DAC to Amps. Issue resolved.

2. Noise in screen
Sol: Grounded laptop chassis and noise is completely gone.

csfile · 08-13-2009, 06:30 AM

Grounding everything to the same point and good quality shielded RCA cables really made a difference for my setup

Sonicxtacy02 · 08-13-2009, 09:18 AM

not sure if the title was done like that on purpose but i fixed it

soundman98 · 08-13-2009, 09:31 AM

still have issues, though i beleive that i have narrowed it down to having to many different grounds all over the place, my solution is turning up the radio