GTS Upgrade
Road Master
Joined: Aug 2013
Posts: 1,083
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From: South Central Va
The only DSP I have experience with is the Arc, which in my case creates floor noise without the head unit even being plugged into it. Before I added it I had almost no floor noise. From what you are saying I suspect it may just be certain DSPs that do that. It sort of makes sense though, a DSP takes a signal and modifies it then passes it on. I would suspect that modification would add a small amount of noise. I'd like to play with other units but I just don't have the room since I'm keeping all the Ultra functions on a pre-Rushmore ride.
Seasoned HDF Member
Joined: Jul 2017
Posts: 5,749
Likes: 1,603
From: High Point, NC.
If you are willing, try adjusting the input sensitivity in the PSM. A lower input sensitivity will increase the output voltage to the amps, so you would need to lower the gains accordingly, while raising the input sensitivity will have the opposite effect. I'm curious if lowering it increases floor noise or not. I know the factory HU's have quite a bit of floor noise, so raising the input sens, may lower the HU noise at the expense of increasing it with higher amp gains. It's worth a shot experimenting with it if the noise is bothersome.
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dforeid
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Jan 7, 2019 11:26 PM
