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Old 10th June 2011, 04:56 PM   #1
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Default rockford fosgate punch 800 a2

ok i have a quick question if any one out there can help. i have this fosgate 800 a2 that i purchased from a friend. he guaranteed it to work but i am unable to test it. i did however put it on a 12 vdc 1.5 amp power supply that i have for small projects and the amp did light up but the power supply went into cc when i tried to turn up the voltage. it was stable at around 10-11 volts with the amperage setting at full around 2 amps. is 1.5 amps not enough current to power on this amp? i ask because my power supply goes haywire when i turn up the voltage or is this amp fried?
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Old 10th June 2011, 06:46 PM   #2
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Location: Louisiana
I've never tried powering one up with a current limit of 2 amps. You'll need to try it on a larger power supply. If you don't have one and will have to connect it to a battery to test it, do so with a 20 amp fuse in the B+ line. This will help protect the power supply in the amp if there are other problems.
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Old 12th June 2011, 01:36 AM   #3
chipper is offline chipper  United States
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I think because the rail caps are trying to charge as it turns on that could be sucking up the juice.
Feel the PUNCH
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Old 12th June 2011, 01:41 AM   #4
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That's possible but, generally, if the amp is left connected to the power supply long enough, it will power up after the caps charge. Again, I don't know what to expect with only 2 amps of current.
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