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re: Car Audio - amp outputs polarity?
Posted on 5/6/23 at 8:15 am to jyoung1
Posted on 5/6/23 at 8:15 am to jyoung1
Are you getting sound out of all the speakers? It is possible your issue is related to the speaker or speaker wire on that channel rather than the amplifier itself. If any are not playing properly, try swapping a working and nonworking speaker connection to see if it follows the speaker or the channel.
And AC is the way to test the speaker output since the output to a speaker will be a sinusoidal wave to replicate what a sound wave looks like. Additionally, the speakers use coils to produce the sound which use AC to generate the field needed. While you could use pulsating DC to do the same thing that is much less efficient and adds complexity to the components as well as additional points of failure.
And AC is the way to test the speaker output since the output to a speaker will be a sinusoidal wave to replicate what a sound wave looks like. Additionally, the speakers use coils to produce the sound which use AC to generate the field needed. While you could use pulsating DC to do the same thing that is much less efficient and adds complexity to the components as well as additional points of failure.
This post was edited on 5/6/23 at 8:26 am
1
Posted on 5/6/23 at 3:33 pm to mdomingue
There isn’t any big issue really, I was actually troubleshooting something else (lost blinker sounds, fixed by adding Load generating device).
Im getting sound out of all speakers.
Ive confirmed that polarity is swapped because when installing my front right speaker today, with it wired correctly the woofer pushes in rather than out. And when i hook it up backwards the woofer pushes out correctly.
I understand the amp sends AC sine waves to speaker but my multimeter doesn’t tell me positive or negative with AC.
Im getting sound out of all speakers.
Ive confirmed that polarity is swapped because when installing my front right speaker today, with it wired correctly the woofer pushes in rather than out. And when i hook it up backwards the woofer pushes out correctly.
I understand the amp sends AC sine waves to speaker but my multimeter doesn’t tell me positive or negative with AC.
This post was edited on 5/6/23 at 3:34 pm
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