Menu
Forum
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Car Audio Discussion
General Car Audio
Car Audio Build Logs
Car Audio Equipment
Subwoofers
Speakers
Amplifiers
Head Units
Car Audio Help
Wiring, Electrical and Installation
Enclosure Design & Construction
Car Audio Classifieds
Car Audio Classifieds
Car Audio Wanted
Classifieds Member Feedback
Gallery
New media
New comments
Search media
SHOP
Shop Head Units
Shop Amplifiers
Shop Speakers
Shop Subwoofers
Shop eBay Car Audio
Test
Forum
Search
Search titles only
Search titles only
Log in / Join
Search
Search titles only
Search titles only
What's new
New posts
Live Activity
Search forums
Members
Registered members
Classifieds Member Feedback
Menu
Reply to thread
Forum
Car Audio Help
Wiring, Electrical & Installation
Fried head unit or speaker short
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Lasherž" data-source="post: 8712691" data-attributes="member: 679555"><p>It sounds to me like you have a reversed polarity signal. It will be extremely faint until a song has a left to right sweep etc that makes one channel unbalanced to the other, and then since you cranked up the gain to compensate for the low volume it'll rattle your fillings and damage your equipment. Is your headunit OEM or aftermarket? Is your signal source direct RCAs from the preouts or is it an LOC?</p><p></p><p>You can test for shorts in speaker components with a multimeter which you should own anyways for setting this stuff up. A speaker will measure anywhere from 2/3 to 3/4 of the impedance value of the speaker in ohms on a multimeter. The exact number depends on the temperature. If it's OL or super low then it's a dead coil most likely. Sometimes you can also tell if the coil is ruined by gently pressing the cone downward, it will either bind or scratch if the speaker is completely toast.</p><p></p><p>As for your head unit I'm not sure, I don't have any experience with specifically how they tend to malfunction, but I wouldn't think you'd get a weak signal out, rather you'd get no signal.</p><p></p><p>Your amp can be tested pretty easy by getting a 3.5mm to RCA adapter to go into a phone or an mp3 player w/e.</p><p></p><p>I still think there's something wrong with its polarity some how if you're getting humongous bursts of noise when you don't expect it. Maybe someone else has another idea that fits better but that's my 2cents.</p></blockquote><p></p>
[QUOTE="Lasherž, post: 8712691, member: 679555"] It sounds to me like you have a reversed polarity signal. It will be extremely faint until a song has a left to right sweep etc that makes one channel unbalanced to the other, and then since you cranked up the gain to compensate for the low volume it'll rattle your fillings and damage your equipment. Is your headunit OEM or aftermarket? Is your signal source direct RCAs from the preouts or is it an LOC? You can test for shorts in speaker components with a multimeter which you should own anyways for setting this stuff up. A speaker will measure anywhere from 2/3 to 3/4 of the impedance value of the speaker in ohms on a multimeter. The exact number depends on the temperature. If it's OL or super low then it's a dead coil most likely. Sometimes you can also tell if the coil is ruined by gently pressing the cone downward, it will either bind or scratch if the speaker is completely toast. As for your head unit I'm not sure, I don't have any experience with specifically how they tend to malfunction, but I wouldn't think you'd get a weak signal out, rather you'd get no signal. Your amp can be tested pretty easy by getting a 3.5mm to RCA adapter to go into a phone or an mp3 player w/e. I still think there's something wrong with its polarity some how if you're getting humongous bursts of noise when you don't expect it. Maybe someone else has another idea that fits better but that's my 2cents. [/QUOTE]
Insert quotes…
Verification
Post reply
Forum
Car Audio Help
Wiring, Electrical & Installation
Fried head unit or speaker short
Top
Menu
Home
Refresh