is it the amp or speakers?????

[Beatin' 10+ year member]

Recently my left tweeter started hissing when I start the car/turn the HU on. It pops when I turn the car off. Then it goes away but the tweeter cuts in and out randomly. I took out the speaker and didn't find anything wrong with it and hooked it back up. Later while going to work, ALL the front speakers started cutting in and out, especially on the drums and snares of the song. It was wild. I don't know what the problem is.

I know it's not the HU because the bass wouldn't cut out. That leaves the speakers or factory amp. Or maybe that left tweeter is causing all the trouble?

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[bradl79 10+ year member]

prob b/c u always be clipping and ur voltage be dippin

 

[mylows10 5,000+ posts]

New speakers ?

 

[6inarow]

Blown or blowing power amplifier finals in the radio, or a shorting wire. Try unplugging speakers and see if the problem persists cranking it up.

 

[Beatin' 10+ year member]

I took out the left tweeter and the crackling and hissing is gone but the rest of the speakers are still cutting in and out on high volume.

It can't be a coincidence that all the dash tweeters are dying at the same time. I think the factory amp is messed up. But I don't know for sure.

I took out the HU and every connection is fine. I doubt something is wrong with the HU internally. Can a HU's speaker level outputs fail while the RCA outputs keep going? My subs never cut out.....

The left side tweeter that I took out is a 2 way and the 3.5in cone is trashed. The surround falls apart and when you push in the cone, the former scrapes against the motor structure. Is that what was causing that tweeter to hiss and crackle, cutting in and out?

 

[Jepalan]

The HU amplifier power stages on speaker outputs can fail while RCA preouts remain fine. This is not uncommon.

It does sound like amp output stage is dying, but make sure you check ground and power connections very carefully first (sounds like you already did).

Can probably give better advice if you tell us what vehicle and audio equipment you are running.

 

[Beatin' 10+ year member]

The HU amplifier power stages on speaker outputs can fail while RCA preouts remain fine. This is not uncommon.It does sound like amp output stage is dying, but make sure you check ground and power connections very carefully first (sounds like you already did).

Can probably give better advice if you tell us what vehicle and audio equipment you are running.

HU is a sony xplod, forgot which model. The speaker amp is a factory infiniti amp for the dodge intrepid 1st gen vehicles. The HU is connected to that amp via speaker level input by using a harness.

 

[Wingman0121 10+ year member]

The left side tweeter that I took out is a 2 way and the 3.5in cone is trashed. The surround falls apart and when you push in the cone' date=' the former scrapes against the motor structure. Is that what was causing that tweeter to hiss and crackle, cutting in and out?[/quote']

Why are you running blown speakers? If the coil is shorted then the amp will go into protect.

 

[Jepalan]

HU is a sony xplod' date=' forgot which model. The speaker amp is a factory infiniti amp for the dodge intrepid 1st gen vehicles. The HU is connected to that amp via speaker level input by using a harness.[/quote']
OK, so you are using the RCA out of the Sony to drive the sub.

You are using the Sony speaker outs into the factory Infiniti Amp.

Either the Sony speaker outputs are dying OR the Infiniti factory amp is dying.

This would be a lot of work, but can you bypass the factory amp and drive the speakers from the Sony HU? That would tell you if it is the HU or the factory amp.

 

[Beatin' 10+ year member]

There are 3 tweeters on the dash. The left one was causing problems so I took it out. Then I realized that the center one was hissing and popping too. I took that one out and played with the cone but it doesn't scrap the former/coil against the motor structure.

After taking out the left and center tweeter, the hissing, popping, and cutting out has stopped.

So far it looks like it was the speakers rather than the HU or amp.

 

[Side Show 10+ year member]

get some splits with crossovers..... how was your system wired up to start with?

 

[Beatin' 10+ year member]

I just took the tweeter on the right side and put it into the left channel and the hissing and popping came back. Now it's clearly an amp issue.

I also broke the the tweeters positive terminal trying to remove it. Stupid factory terminals were way too tight. Now I have no tweeters. All 3 are gone. //content.invisioncic.com/y282845/emoticons/furious.gif.fc81ca146dbff91fede3ed290dbc4f4c.gif

 

[Wingman0121 10+ year member]

Take it to a reputable shop and pay to get it fixed because DIY doesn't seem to work for you.

 

[Beatin' 10+ year member]

Take it to a reputable shop and pay to get it fixed because DIY doesn't seem to work for you.

I'm plenty good at DIY. Dodge is stupid for using retarded terminal designs. Further more, the other 2 tweeters I didn't break, they were just shot out anyway so they went into the trash.

Gonna order some new tweeters and possibly amp, though I have an old one I can use.