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I bought the pyramid cr65 low pass active crossover. I hooked up the power and negative connections. Then I ran the rca's into the input and the rca's output to my sub amp. As soon as I turn it on it justs pumps in and out non stop regardless of the music. It wont play music. If I disconeect and bipass it my sub works fine??? When I hooked it up I spliced into the amp's constant,remote and ground. I cant figure out why its just pumping air??? could it be the rca cables? or I noticed on the wiring diagram the rca input is checkered lines and the out put rca diagram is solid lines? Am I supposed to use a "y" rca or is it supposed to have the sound go through like I hooked it up? Have you ever heard of after connecting a crossover the sub just pumping air like that?? Do I have to run its own constant, negative and ignition instead of splicing it? Or is is more likely to be a bad set of rca's? They were on the cheaper side.

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Posted on Jan 02, 2017

techman
  • 3130 Answers

SOURCE: parallel connection of power mosfets with two of 5 smoking

The IRFZ46N are n channel high speed switches . They basicly drive the Mosfets. Sounds like you have some problem there my friend, and unless you paid alot for this amp. Its going to need probobly all the n channel switches as well as every mosfet + the bias resistors repalced. Before plugging in the amp jump out the fuse with a 100 watt light bulb.. If the bulb glows brightly when you apply power there is still a short in the unit and could be in the switching power supply section of the amp. If it glows bright and dims, The shorts are most likly gone. The bulb will minimize the amount of current the unit can draw and most of the time wont let the new parts blow out. Check out this service number and see if they can help you. Good Luck Main support number 978-823-0300

Posted on Jul 26, 2006

rcampsr
  • 90 Answers

SOURCE: Pyramid PB449X In Protect Mode

The protect light is a notification that the amplifier has reached a set temperature and shuts the amp down till it cools off. Look for the thermosister on the heatsink and follow the circuitry back to the control chip. Once you get that fixed the amp should power up until it gets too hot and the protect circuit kicks in. I had one of these amps for a while and the circuit was very touchy. Regards, rcampsr

Posted on Feb 21, 2009

SPL Freak
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SOURCE: Pyramid PB1500 vs. Metrik Rem. Bass knob????

Yeah it's probably not going to work because it's not even the same brand

Posted on Mar 06, 2010

  • 12 Answers

SOURCE: Rockford Fosgate Punch 500a amp wont turn on

check the internal fuses inside the amp its self these burn up real easy plus if it is them it will save you some money

Posted on Mar 31, 2010

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