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Old 05-19-2019   #1
 
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Default Noise out of single speaker

Hi guys - I have a tweeter (Dayton nd16) that makes a noise I can’t figure out. My first thought was that it was blown, so I replaced it, yet the noise is still there. It sounds good at high volumes but at quieter parts of songs you can hear a distinct crackle out of it. What are some thoughts on possible issues? Bad amp channel? It’s run off a Rockford 360.3 dsp as well.

Thanks for any thoughts.
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Old 05-20-2019   #2
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Default Re: Noise out of single speaker

Swap the channel for the other tweeter at the amp (important), if the noise swaps sides itís the amp, if not likely a bad connection between amp or the speaker lead getting earthed somewhere
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Old 05-20-2019   #3
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Default Re: Noise out of single speaker

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Originally Posted by dumdum View Post
Swap the channel for the other tweeter at the amp (important), if the noise swaps sides itís the amp, if not likely a bad connection between amp or the speaker lead getting earthed somewhere
Well done.
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Old 05-20-2019   #4
 
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Originally Posted by dumdum View Post
Swap the channel for the other tweeter at the amp (important), if the noise swaps sides it’s the amp, if not likely a bad connection between amp or the speaker lead getting earthed somewhere
I’ll do that. I noticed last night certain parts of certain songs can mimic it, and it will be the exact same “pattern” of noise each time that part of the song plays. Some songs it’s very quiet or non existent. Would you expect that to be the case with either of the above two possibilities?
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Old 05-20-2019   #5
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Default Re: Noise out of single speaker

What's your HPF set to on them?

Do what has been suggested to help narrow the problem down.
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Old 05-20-2019   #6
 
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What's your HPF set to on them?

Do what has been suggested to help narrow the problem down.
They are high passed at 5,000. The left tweeter makes zero noise like the right tweeter though so I can’t see how it would be filter or gain related. I could be wrong there though.
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Old 05-20-2019   #7
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Default Re: Noise out of single speaker

Quote:
Originally Posted by Swoopejoy View Post
They are high passed at 5,000. The left tweeter makes zero noise like the right tweeter though so I canít see how it would be filter or gain related. I could be wrong there though.
That should be a fine HPF for those, did you every run them lower with a decent amount of power? It's possible that it's damaged, but the swap the wires at the amp, and you'll get some good info. It could be a bad tweeter, amp channel, wiring, etc. Seeing if the noise sticks with the same tweeter after swapping wires will tell you that it's either the wire or tweeter.
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Old 05-20-2019   #8
 
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Quote:
Originally Posted by Swoopejoy View Post
They are high passed at 5,000. The left tweeter makes zero noise like the right tweeter though so I can’t see how it would be filter or gain related. I could be wrong there though.
That should be a fine HPF for those, did you every run them lower with a decent amount of power? It's possible that it's damaged, but the swap the wires at the amp, and you'll get some good info. It could be a bad tweeter, amp channel, wiring, etc. Seeing if the noise sticks with the same tweeter after swapping wires will tell you that it's either the wire or tweeter.
Makes sense. My initial thought was a blown right tweeter, but I replaced it with a new speaker and the noise was immediately still there so I’m thinking I can eliminate that possibility at this point.
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Old 07-22-2019   #9
 
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Originally Posted by dumdum View Post
Swap the channel for the other tweeter at the amp (important), if the noise swaps sides it’s the amp, if not likely a bad connection between amp or the speaker lead getting earthed somewhere
Hi guys sorry to resurrect this after a while but I got around to swapping wires. The noise shifterd to the left side tweeter, so I assume I’ve got a bad channel. It’s a Zapco st 4 channel amp. Somebody I spoke with suggested trying some contact cleaner on the knobs, thoughts? Any other remedies or will I need a new amp to get rid of it.
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Old 07-22-2019   #10
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Default Re: Noise out of single speaker

I experienced something similar recently but with mids. One mid was making scratchy sounds - first thought it was damaged.

After some troubleshooting I found it was caused by an input selector switch on the amp was not fully engaged to the setting it was supposed be at - it was in between settings. Moved the switch over a millimeter and the noise disappeared.

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Old 07-23-2019   #11
 
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Originally Posted by Truthunter View Post
I experienced something similar recently but with mids. One mid was making scratchy sounds - first thought it was damaged.

After some troubleshooting I found it was caused by an input selector switch on the amp was not fully engaged to the setting it was supposed be at - it was in between settings. Moved the switch over a millimeter and the noise disappeared.
I sprayed some contact cleaner on all switches and the gain knob tied to the tweeters and moved them back and forth a good bit, but it made no difference. Any other thoughts on ways to fix this single bad channel?
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Old 5 Days Ago   #12
 
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Wanted to bump this to get some new thoughts. I replaced the tweeter, replaced the amp under watery but the white noise type of sound is still present in the tweeters. I am hard of hearing in certain frequencies in my left ear, so I thought it was just one tweeter, but both are in fact making the same noise.

My newest observation is that the noise is only present when using the Rockford 360.3 ‘s Bluetooth source to play music. When I use a direct usb, it’s not present, or much less so. Is that standard for Bluetooth? Or does that help point anybody in a direction on what I should do next?
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Old 5 Days Ago   #13
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Default Re: Noise out of single speaker

Quote:
Originally Posted by Swoopejoy View Post
Wanted to bump this to get some new thoughts. I replaced the tweeter, replaced the amp under watery but the white noise type of sound is still present in the tweeters. I am hard of hearing in certain frequencies in my left ear, so I thought it was just one tweeter, but both are in fact making the same noise.

My newest observation is that the noise is only present when using the Rockford 360.3 Ďs Bluetooth source to play music. When I use a direct usb, itís not present, or much less so. Is that standard for Bluetooth? Or does that help point anybody in a direction on what I should do next?
It's not a problem with modern Bluetooth, but the 360.3 is far from modern, bluetooth as improved significantly in the decade since the 360.3 came out.
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Old 5 Days Ago   #14
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Default Re: Noise out of single speaker

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Originally Posted by gijoe View Post
It's not a problem with modern Bluetooth, but the 360.3 is far from modern, bluetooth as improved significantly in the decade since the 360.3 came out.
Yep. Sounds like you either need to quit using bluetooth, swap out to a newer processor, or get used to the sound.


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