Previously, you stated that the output was distorted and there was about 1v across the speaker terminals. Was the 1v there with a speaker connected or did it drop to 0v?
Was it distorted but very loud?
Did you try it without the limiter, confirming that there was 12v+ across the B+ and ground terminals?
Was it distorted but very loud?
Did you try it without the limiter, confirming that there was 12v+ across the B+ and ground terminals?
Hi Perry, thank you for your help this far.
To answer your question I tried your suggestion.
The distortion is fairly loud, as in louder than the actual music playing. (however in real world application I might not hear it installed) I cautiously powered the amp up tonight with a fuse instead of the limiter, (voltage was 12V at the amplifier power terminals) and the output is the same. Without music playing but source hooked up, I would have to describe the sound as "white noise"
I made a sample video of the output with source playing.
http://www.youtube.com/watch?v=sQ1SH4J5SaI
It should be noted, that the DC output starts around 1.2VDC but slowly drops. for example, tonight it had dropped to about .75 before I disconnected the power supply.
To answer your question I tried your suggestion.
The distortion is fairly loud, as in louder than the actual music playing. (however in real world application I might not hear it installed) I cautiously powered the amp up tonight with a fuse instead of the limiter, (voltage was 12V at the amplifier power terminals) and the output is the same. Without music playing but source hooked up, I would have to describe the sound as "white noise"
I made a sample video of the output with source playing.
http://www.youtube.com/watch?v=sQ1SH4J5SaI
It should be noted, that the DC output starts around 1.2VDC but slowly drops. for example, tonight it had dropped to about .75 before I disconnected the power supply.
Hi Perry,
I am curious now if maybe I should test with a different speaker. The distortion is louder than the music, but maybe the speaker is defective itself. I'm not a complete noob, I swear, just throwing ideas out there is all.
As for the white noise, I am using a full range speaker, if it were running to my subs, in the trunk I might not be able to hear it.
I am curious now if maybe I should test with a different speaker. The distortion is louder than the music, but maybe the speaker is defective itself. I'm not a complete noob, I swear, just throwing ideas out there is all.
As for the white noise, I am using a full range speaker, if it were running to my subs, in the trunk I might not be able to hear it.
With the black probe on the amplifier's main ground terminal and the red probe on the input RCA shield, what is the DC voltage?
If it's essentially 0v, connect a jumper from the RCA shield to the amp's main ground. Does that make a difference?
Is there less noise when there is nothing plugged into the RCA jacks?
If it's essentially 0v, connect a jumper from the RCA shield to the amp's main ground. Does that make a difference?
Is there less noise when there is nothing plugged into the RCA jacks?
I tested both ways, the white noise is the same volume with or with out source connected.
I only read about 1.5mV between the RCA shield and the negative terminal.
I jumped the shield to the negative terminal block and the sound is the same as it is without the jumper.
To rule out the speaker, I changed it, and the same distorted sound persists.
I only read about 1.5mV between the RCA shield and the negative terminal.
I jumped the shield to the negative terminal block and the sound is the same as it is without the jumper.
To rule out the speaker, I changed it, and the same distorted sound persists.
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