Subwoofer Making LOUD popping noise

[Deficit]

Hello All,

This is my first post from a longtime audio fanatic (1998)

Anyways everything was fantastic until this morning. While driving to work I made a phone call and then put the music on (JLW7 12" and hiphonics brx 2400). Almost right away my sub began to make a very loud popping noise every second or so. I have my box in the back of my truck and was amazed to see the sub was going past max excursions n each time. I was able to pull over within 10 seconds or so but the damage was done.

So tonight after work I decided to try another box to see what happened ( 2 10" alpine type r's). Here is where I am confused. Once everything was connected I turned turned the key to start my head unit but not start the car. 15 minutes or so I was happy, everything was put away and I had to go to the store. I started the car and the music plays, the amp is on but no bass. I turned the engine off and the music and subs both played.... Very strange, I repeated this a couple times and the result was the same.

Once more I tried it started the car and POP-POP-POP. I quickly ripped the speaker wires out of the amp and I do not believe the subs are damaged.

I cannot figure out what is wrong, and what would cause this. For years this setup has been problem free with no issues. The only recent change was that I had an Optima red top put in Sunday. I watched the tech do the install and everything was done correctly.

Any ideas what this could be? It's only been about an hour and I'm missing it. Any help would be great!

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[ashren315]

Hello All,
This is my first post from a longtime audio fanatic (1998)

Anyways everything was fantastic until this morning. While driving to work I made a phone call and then put the music on (JLW7 12" and hiphonics brx 2400). Almost right away my sub began to make a very loud popping noise every second or so. I have my box in the back of my truck and was amazed to see the sub was going past max excursions n each time. I was able to pull over within 10 seconds or so but the damage was done.

So tonight after work I decided to try another box to see what happened ( 2 10" alpine type r's). Here is where I am confused. Once everything was connected I turned turned the key to start my head unit but not start the car. 15 minutes or so I was happy, everything was put away and I had to go to the store. I started the car and the music plays, the amp is on but no bass. I turned the engine off and the music and subs both played.... Very strange, I repeated this a couple times and the result was the same.

Once more I tried it started the car and POP-POP-POP. I quickly ripped the speaker wires out of the amp and I do not believe the subs are damaged.

I cannot figure out what is wrong, and what would cause this. For years this setup has been problem free with no issues. The only recent change was that I had an Optima red top put in Sunday. I watched the tech do the install and everything was done correctly.

Any ideas what this could be? It's only been about an hour and I'm missing it. Any help would be great!

So car running and radio on = no sound from subs and car turned to just accessories but not running = sound coming from subs?

And amp has power in both scenarios?

Only thing I can think of is some sort of voltage issue when the car is running. Have you tested your voltage on your positive wire at your amp? Perhaps the amp is going into some sort of protection mode when the car is running. Maybe at the higher voltage you are likely getting with the car actually running is giving you more power to the amp and if the subs are damaged "somewhat" maybe they are throwing a bad ohm load to the amp.

 

[10k-watts]

Voltage and maybe bad connection somewhere...check ground and make sure u have a clean and tight connection

Mr. 10K

 

[Boomin_tahoe 5,000+ posts]

I would def check connections 1st before buying anything. Because 90% of the time is something lose or came undone. I'd check your ground 1st.

 

[JohnKuthe]

I would def check connections 1st before buying anything. Because 90% of the time is something lose or came undone. I'd check your ground 1st.

Yep, most electrical problems can be traced to one of two problems: 1.Not plugged in, or 2. Not turned on.

John Kuthe...

 

[Boomin_tahoe 5,000+ posts]

Yep, most electrical problems can be traced to one of two problems: 1.Not plugged in, or 2. Not turned on.
John Kuthe...

Why are you commenting?

Your input isn't needed since we have REAL hands on people that are able to help others troubleshoot.

 

[JohnKuthe]

Why are you commenting?
Your input isn't needed since we have REAL hands on people that are able to help others troubleshoot.

Because this is an electrical truth me and my EE lab buddies discovered in the EE lab one evening working on an EE project.

John Kuthe...

 

[Boomin_tahoe 5,000+ posts]

Because this is an electrical truth me and my EE lab buddies discovered in the EE lab one evening working on an EE project.
John Kuthe...

Nobody cares what you and your buddies did in the 70's.

This is 2017. Past your prime. So what you have commented in this thread is really meaningless.

 

[Flipper245]

Yep, most electrical problems can be traced to one of two problems: 1.Not plugged in, or 2. Not turned on.
John Kuthe...

Seriously? Did you read the f u c k I n g problem you dumb c u n t? If it's not plugged in or turned on, how would he get popping noises? Just when I thought you couldn't get stupider. How stoned were you when you figured out it wasn't turned on. Oh wooooowww maaaaan! Duhhhh!

 

[Boomin_tahoe 5,000+ posts]

He's trolling...

 

[JohnKuthe]

Nobody cares what you and your buddies did in the 70's.
This is 2017. Past your prime. So what you have commented in this thread is really meaningless.

I was in WashU's engineering school in the 1990's, 1989 to 1995 actually.

And Truths are timeless!

John Kuthe...

 

[Boomin_tahoe 5,000+ posts]

Go to a Bingo hall or something. Get your wortlessass off this forum.

 

[JohnKuthe]

Go to a Bingo hall or something. Get your wortlessass off this forum.

Envious? GOOD!! I'm so gonna rub your nose in it WHEN I decide to finally retire! Bet I do before YOU!

John Kuthe...

 

[Austin175 10+ year member]

Seriously? Did you read the f u c k I n g problem you dumb c u n t? If it's not plugged in or turned on, how would he get popping noises? Just when I thought you couldn't get stupider. How stoned were you when you figured out it wasn't turned on. Oh wooooowww maaaaan! Duhhhh!

Lmmfao!

 

[Deficit]

So....in case anyone was wondering it ended up being a bad amp. The ground was good, constant power, rcas and turn in wiring was all in tact.

It's been about 2 weeks now and no problems.

I would like to thank those that came up with valid suggestions, much appreciated