Ground loop isolator or Pac sni-15 loc
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Road Warrior
Joined: Jul 2013
Posts: 1,399
Likes: 92
From: ny
Ground loop isolator or Pac sni-15 loc
Stock head unit flashed with FR, SD 800.4 bridged/ GZ 6.5 gains set with a DMM. Iv always has some floor noise, even with my prior set up. I only hear the floor noise when volume the is all the way down. Im using the Pac sni-15 loc for the low level inputs. I have a ground loop isolator that I want to try and see if I cant get rid of the floor noise.
My question is Do I use both the Pac loc and the ground loop isolator, or remove the loc and just use the GLI?
My question is Do I use both the Pac loc and the ground loop isolator, or remove the loc and just use the GLI?
Thread Starter
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Road Warrior
Joined: Jul 2013
Posts: 1,399
Likes: 92
From: ny
It the EVOX 800.4 I had it using the high level input and still have floor noise ,even if The amp gains are turned to minimum. I haven't tried to ground out the Pac, I dont know if that is necessary, but going to try that 1st
Grand HDF Member
Joined: Sep 2017
Posts: 3,846
Likes: 998
From: Southern Virginia
Just for grins start unplugging devices along the chain to see where the floor noise is coming from. With a factory head unit I would suspect it is coming from there because it has speaker level outputs. I hardly had any floor noise at all until I installed my DSP. It all comes from there on my system.
Try unplugging the head unit from the PAC and see if the noise persists. If it goes away it may just be something you have to live with. In most cases the ground loop isolator just helps with ignition noise and little pops which are caused by DC pulses. I'm not saying it definitely won't help you, but it didn't do anything for my floor noise, it just got rid of a couple of pops I had when turning the head unit on.
Try unplugging the head unit from the PAC and see if the noise persists. If it goes away it may just be something you have to live with. In most cases the ground loop isolator just helps with ignition noise and little pops which are caused by DC pulses. I'm not saying it definitely won't help you, but it didn't do anything for my floor noise, it just got rid of a couple of pops I had when turning the head unit on.
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