I just bought a 22" Vizio. It worked great and then last night the speakers began to crackle and pop (really badly- you can't even hear the TV show you are watching). The TV is connected to a TIVO which is connected to a cable box (not using the HD). Is it the TV or the cable?
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Sounds like you may have a blown (open) speaker. Remove the speaker and measure the DC resistance if you have a ohmmeter. Should read a little under the rated impedance (4 ohms). No ohmmeter handy? Touch a 9V battery across the speaker terminals, and you should hear a pop from the speaker. No pop then you have a bad speaker. Also the speaker should move freely when you push on it. Don't push the dust cover (the dome in the center) unless you like that dented look! If the speaker is indeed bad and you can't get an OEM (P/N: 363389-001) then an aftermarket speaker should (in most cases) work fine. Just make sure it is a 12", 4 ohms and rated at 250W RMS or greater. May actually be lower than 250W but better higher than lower. Good luck!
This model has very cheap pots. What really happens is the center pin on the pot breaks leaving the wiper that rides on the carbon track to lift, causing this problem. Use caution as this condition continues the pot will go bad enough to send max volume to the system causing severe damage to the speaker, and maybe the listener. THE GREAT OZ.
Could be an open capacitor in the cross-over, unconnected wire to the tweeter (not likely) or a blown (open) voicecoil in the tweeter. Remove the tweeter and with a 9 volt battery (even run down but not dead will work) quickly touch it to the connections to the tweeter - it should pop and crackle. No static, the tweeter has sung it's last song.
Bad news...you've blown the tweeters. Overdriving the mixer/amp creates distortion on the amplifier which heats up the speaker voice coils and eventually causes damage. Because of their small diameter voice coil windings the tweeters fail first (opens up like a fuse element does) followed by the woofer making a scraping sound (deformed voice coil) or not working as well. Warranty service because you blew out the tweeters? Don't get your hopes up.
1. PLEASE use enough power for the venue that you have. A high powered system will run all night at 10:00 (physical volume knob setting) than an underpowered system set for 2:00.
2. Get speakers off the ground and closer to your audience's ears. Audio from speakers on the floor must battle surfaces that actually absorb some of the sound....carpet, drapes, etc. And besides, legs can't hear that well.
Does the crackling and popping sound comes only from the sub, or from the other speakers too? Try switching of to check. I think that it is problem on volume control potentiometer. In that case all the speakers must sound crackling and popping. If the problem is only in the sub you have to check its connections.
One possibility is that the mute switches on your speakers have oxydized contacts INSIDE the switch - this kind of malfunction mostly occurs when the equipment is exposed to moisture and/or smog.
The most common solution is to change both switches, but they can also be disassembled and cleaned up (which is a bit more complicated and time consuming).
Another possibility is a dried up filter capacitor in the power supply or somewhere in the preamplifier section, possibly also a bad preamplifier chip but if your speakers work fine (with the exception of the mute switch noise), then the problem is more likely with the switches.
Also, check the internal connectors for any dirt, broken wires or desoldered pins.
Could also be something else, you should know i'm only assuming on the possibilities and i'm listing the most common problems i've encountered so far.
Does it only pop and crack when its connected to your amp or receiver ? i have the same thing with my sub [its not cerwin vega] but when i turn my amp off the sub doesnt pop anymore so i think my amp is the problem not the sub , yours might be the same problem .
I bought my VE-28s and it did exactly that crackled, cerwin replaced part in amp but few months later problem persisted. they then replaced entire amp assembly and its been fine. i really push it to and its been fine. to test it, unplug the connection from amp/ reciever and see if it persists. if so its the sub, if not its the amp/ reciever. dont dump it, these subs really crank and can put out some deep loud bass.