Static Noise and popping when turning on

[tbuckvich]

I installed 4 6.5in mids and 2 3in tweeters, with an aftermarket amp, in my truck and they have a loud hiss when they are on even without any RCAs hooked up. I’ve tried grounding to the frame and cab. What else could I try to troubleshoot it

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[CarAudio.com - Hal AI Bots]

I installed 4 6.5in mids and 2 3in tweeters, with an aftermarket amp, in my truck and they have a loud hiss when they are on even without any RCAs hooked up. I’ve tried grounding to the frame and cab. What else could I try to troubleshoot it

It sounds like you're experiencing noise issues, commonly referred to as "ground noise" or "hiss," which can be frustrating. Here are several troubleshooting steps you can take to help eliminate or reduce the hiss:

1. **Check Ground Connections**:
- Ensure that your ground connections are clean, tight, and made to bare metal. Sometimes, a poor ground can lead to noise issues. Consider using a multimeter to check the resistance of your ground.

2. **Power Wiring**:
- Make sure your power wire is not run parallel to the RCA cables. If they are, try rerouting them so they are separated. Ideally, power and signal wires should cross at 90-degree angles.

3. **RCA Cables**:
- Even though you mentioned there are no RCAs hooked up, sometimes the input stage of the amplifier can pick up interference. Check the quality of your RCA cables and ensure they are shielded. If you have spare cables, try swapping them out.

4. **Capacitor Installation**:
- If you are using a lot of power, consider installing a capacitor in your system. This can help smooth out the power supply and may reduce noise.

5. **Amplifier Settings**:
- Check the gain settings on your amplifier. If the gain is set too high, it can introduce noise. Lower the gain and see if it helps reduce the hiss.

6. **Noise Filters**:
- Consider installing a noise filter or ground loop isolator on the power or speaker wires. These devices can help eliminate unwanted noise.

7. **Check for Interference**:
- Look for potential sources of electrical interference, such as ignition systems or other electronic devices in your vehicle. Sometimes, relocating or shielding the amplifier can help.

8. **Test Components Individually**:
- If possible, test the components individually. Disconnect the amp and see if the hiss persists with just the speakers connected. This can help isolate where the noise is coming from.

9. **Check Speaker Wiring**:
- Ensure that the speaker wires are not damaged or frayed. Additionally, verify that the polarity is correct and that there are no short circuits.

If you've tried all these steps and the hiss persists, it may be worth consulting with a professional or considering a different amplifier, as some amplifiers may inherently have more noise than others.

Feel free to ask more questions, and hopefully, other members can chime in with additional suggestions or experiences!

 

[tbuckvich]

It sounds like you're experiencing noise issues, commonly referred to as "ground noise" or "hiss," which can be frustrating. Here are several troubleshooting steps you can take to help eliminate or reduce the hiss:

1. **Check Ground Connections**:
- Ensure that your ground connections are clean, tight, and made to bare metal. Sometimes, a poor ground can lead to noise issues. Consider using a multimeter to check the resistance of your ground.

2. **Power Wiring**:
- Make sure your power wire is not run parallel to the RCA cables. If they are, try rerouting them so they are separated. Ideally, power and signal wires should cross at 90-degree angles.

3. **RCA Cables**:
- Even though you mentioned there are no RCAs hooked up, sometimes the input stage of the amplifier can pick up interference. Check the quality of your RCA cables and ensure they are shielded. If you have spare cables, try swapping them out.

4. **Capacitor Installation**:
- If you are using a lot of power, consider installing a capacitor in your system. This can help smooth out the power supply and may reduce noise.

5. **Amplifier Settings**:
- Check the gain settings on your amplifier. If the gain is set too high, it can introduce noise. Lower the gain and see if it helps reduce the hiss.

6. **Noise Filters**:
- Consider installing a noise filter or ground loop isolator on the power or speaker wires. These devices can help eliminate unwanted noise.

7. **Check for Interference**:
- Look for potential sources of electrical interference, such as ignition systems or other electronic devices in your vehicle. Sometimes, relocating or shielding the amplifier can help.

8. **Test Components Individually**:
- If possible, test the components individually. Disconnect the amp and see if the hiss persists with just the speakers connected. This can help isolate where the noise is coming from.

9. **Check Speaker Wiring**:
- Ensure that the speaker wires are not damaged or frayed. Additionally, verify that the polarity is correct and that there are no short circuits.

If you've tried all these steps and the hiss persists, it may be worth consulting with a professional or considering a different amplifier, as some amplifiers may inherently have more noise than others.

Feel free to ask more questions, and hopefully, other members can chime in with additional suggestions or experiences!

This is my second amp trying to get rid of it, I’ve tried a couple grounds, it has a hiss before I even hook up the rca cables, I’ve tried moving the amp around, I’ve tried a ground loop isolater, the gain is all the way down, I’ve tried other rca cables. There’s somehow static with just the amp and speakers hooked up and no inputs

 

[RobGMN Premium Member]

Try isolating the amp by hooking it direct to the battery, with short cables, and connecting an external speaker to the outputs, nothing else.
Keep vehicle off.

You need to determine if the amp itself is the source of the noise, or something else.

Even better (but less likely a scenario), connect to a battery that's not in a car.

 

[RobGMN Premium Member]

Sorry. Posted in wrong thread.

 

[administrator]

Maybe the fucktard Noem should have watched the video before claiming something that never happened, happened.
Idiot.

View attachment 69899

Oh my, I know the urge, but let’s keep this thread on topic

 

[RobGMN Premium Member]

Oh my, I know the urge, but let’s keep this thread on topic

Oops. Don't hesitate to edit the quote out. Post should not have been in this thread.

 

[administrator]

Oops. Don't hesitate to edit the quote out. Post should not have been in this thread.

I know, just giving ya a hard time.

 

[highfigh]

It sounds like you're experiencing noise issues, commonly referred to as "ground noise" or "hiss," which can be frustrating. Here are several troubleshooting steps you can take to help eliminate or reduce the hiss:

1. **Check Ground Connections**:
- Ensure that your ground connections are clean, tight, and made to bare metal. Sometimes, a poor ground can lead to noise issues. Consider using a multimeter to check the resistance of your ground.

2. **Power Wiring**:
- Make sure your power wire is not run parallel to the RCA cables. If they are, try rerouting them so they are separated. Ideally, power and signal wires should cross at 90-degree angles.

3. **RCA Cables**:
- Even though you mentioned there are no RCAs hooked up, sometimes the input stage of the amplifier can pick up interference. Check the quality of your RCA cables and ensure they are shielded. If you have spare cables, try swapping them out.

4. **Capacitor Installation**:
- If you are using a lot of power, consider installing a capacitor in your system. This can help smooth out the power supply and may reduce noise.

5. **Amplifier Settings**:
- Check the gain settings on your amplifier. If the gain is set too high, it can introduce noise. Lower the gain and see if it helps reduce the hiss.

6. **Noise Filters**:
- Consider installing a noise filter or ground loop isolator on the power or speaker wires. These devices can help eliminate unwanted noise.

7. **Check for Interference**:
- Look for potential sources of electrical interference, such as ignition systems or other electronic devices in your vehicle. Sometimes, relocating or shielding the amplifier can help.

8. **Test Components Individually**:
- If possible, test the components individually. Disconnect the amp and see if the hiss persists with just the speakers connected. This can help isolate where the noise is coming from.

9. **Check Speaker Wiring**:
- Ensure that the speaker wires are not damaged or frayed. Additionally, verify that the polarity is correct and that there are no short circuits.

If you've tried all these steps and the hiss persists, it may be worth consulting with a professional or considering a different amplifier, as some amplifiers may inherently have more noise than others.

Feel free to ask more questions, and hopefully, other members can chime in with additional suggestions or experiences!

Hiss is not "ground noise", it's from setting the input sensitivity controls too high or nisy resistors.

 

[tbuckvich]

Try isolating the amp by hooking it direct to the battery, with short cables, and connecting an external speaker to the outputs, nothing else.

Keep vehicle off.

You need to determine if the amp itself is the source of the noise, or something else.

Even better (but less likely a scenario), connect to a battery that's not in a car.

I’ll try this, if it isn’t there on a separate battery would the wires or something in the truck be causing it

 

[tbuckvich]

Hiss is not "ground noise", it's from setting the input sensitivity controls too high or nisy resistors.

I had all the settings all the way down and th volume of the hiss didn’t change

 

[RobGMN Premium Member]

Try isolating the amp by hooking it direct to the battery, with short cables, and connecting an external speaker to the outputs, nothing else.

I’ll try this, if it isn’t there on a separate battery would the wires or something in the truck be causing it

Could be the wiring, could be what's going through the wiring.

Your amp might be picking up EMI and amplifying it to sound.

 

[tbuckvich]

Could be the wiring, could be what's going through the wiring.

Your amp might be picking up EMI and amplifying it to sound.

What does EMI stand for and how what I fix it

 

[RobGMN Premium Member]

What does EMI stand for and how what I fix it

Electro Magnetic Interference.
Basically, electricity coursing through wires can create fields of energy outside of those wires. Those energy fields can be picked up by poorly shielded (or even defective) equipment, and end up being unwanted sound.

Fixing it requires you first confirm it's there, and what it's from. Then, you either eliminate it, or get the amp far enough away that it's not affected.

While we wait for you to test: What amp, what car, what mounting location, what wires, where are they connected, are all questions that will help us help you.

 

[deez283 10+ year member]

Like mentioned a few posts back hiss is generally caused by having your gains too high.

How did you determine proper setting for your gain?