Audio Noise
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Tourer
Joined: Jun 2022
Posts: 328
Likes: 214
From: Cypress
Audio Noise
I have a Soundstream HDHU14+, with Precision Maa4.400 amp. Hertz Neos in fairing, Mmats 6.5s in lowers, Herts 6x9 Neos in bags. All wiring from Volunteer audio, nothing cut or spliced. With the bike running I am getting a whining noise that increases with the throttle. After a bit of speed you cant hear it but I don't feel as though that noise should be there. Especially after spending a few K. All wires are tight, battery wire is not run near speaker wires. I have also added a zero gauge ground wire from the battery to the frame. Any other things to look into this issue at?
2018 FLHTK
2018 FLHTK
Cruiser
Joined: Aug 2012
Posts: 155
Likes: 5
From: So Cal
I have been looking at these same head units from Volunteer Audio and in ALL the youtube install videos they mention you need to use the high-level inputs (speaker wire connection, NOT RCAs) when using an amp or you will get noise. Check out the vids or call and verify with them. This may be your issue.
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Tourer
Joined: Jun 2022
Posts: 328
Likes: 214
From: Cypress
Amp is out and going back to get tested and probably replaced. I was also thing about upgrading the amp after that. I have a Dayton dsp I have not installed and was thinking maybes a 1200.4. If I put the tour pack back on then I will need to upgrade those speakers as well. At that point maybe 2 1200.4s. For now, just some music will be nice
Road Warrior
Joined: Feb 2016
Posts: 1,354
Likes: 399
From: Vancouver, BC
When you say the noise "increases" with throttle do you mean in volume or in pitch (higher pitch with increased engine revs)? If the later then what your likely hearing is stator (alternator) whine and is usually caused by a voltage potential between the ground points used for your HU and amp. To test you could disconnect the amp ground and temporarily connect it to the frame of the HU using one of the HU's mounting bolts.
There are a ton of threads here and articles out there on troubleshooting and resolving if this proves to be the problem.
Anyway, let us know what they find. My guess is the amp will probably test fine.
There are a ton of threads here and articles out there on troubleshooting and resolving if this proves to be the problem.
Anyway, let us know what they find. My guess is the amp will probably test fine.
Last edited by hamah; Aug 26, 2023 at 01:41 PM.
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Tourer
Joined: Jun 2022
Posts: 328
Likes: 214
From: Cypress
Thanks for your reply. Its not the pitch that changes but the volume of the noise increases. Hopefully I will have some answers from VA this week. If the amp is good then not sure where to look from there. Maybe ground the amp to the radio as has been suggested. Also I guess I can move the power and ground wire and re-route them.
hopefully this video works
https://youtube.com/shorts/jCjOAytq2...yXO5S97kO57Oa_
hopefully this video works
https://youtube.com/shorts/jCjOAytq2...yXO5S97kO57Oa_
Last edited by SSG_B; Aug 28, 2023 at 11:01 AM.
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Road Warrior
Joined: Feb 2016
Posts: 1,354
Likes: 399
From: Vancouver, BC
Thanks for your reply. Its not the pitch that changes but the volume of the noise increases. Hopefully I will have some answers from VA this week. If the amp is good then not sure where to look from there. Maybe ground the amp to the radio as has been suggested. Also I guess I can move the power and ground wire and re-route them.
hopefully this video works
https://youtube.com/shorts/jCjOAytq2...yXO5S97kO57Oa_
hopefully this video works
https://youtube.com/shorts/jCjOAytq2...yXO5S97kO57Oa_
Last edited by hamah; Aug 28, 2023 at 12:02 PM.
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Thread Starter
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Tourer
Joined: Jun 2022
Posts: 328
Likes: 214
From: Cypress
I did not get a video of it running before the amp came out, you didn't miss anything therefore no whine to hear with that video. The noise is very prominent with the engine running as well and outdoors. Ill keep this thread updated on what I hear from VA when they get the amp. Hopefully that is the issue and I don't need to start the trouble shooting process all over. I will however be in the market for a larger amp at some point to push all the speakers the way they should be.