Question about Pyramid Car Audio & Video
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Posted on Jan 02, 2017
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
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
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Passive crossovers are easy to install. By definition, the only type of connections they require are to your speaker line. They typically get installed between the end of the speaker wire and the speaker. Connection should be fairly simple, just like hooking up the speaker itself.
Now F-Mod crossovers modify the audio signal before it is amplified. They accept the patch cord from your receiver on one end, and then plug directly into the preamp inputs on your amplifier. They are also easy to install, and don't require additional wiring.
An active crossover requires a little more work. You have
to connect 12-volt power, ground, and a turn-on lead. The active
crossover gets installed between your receiver and your amplifier. A lot of
active crossovers have both speaker-level and preamp inputs, so they
can usually work with either type of connection. The outputs will be
preamp connections to your amplifier. Hope that helps.
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