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We have a peavey fire bass 700 and we were using it in an outside program. We plugged up a sunn bass cabinet with 2 15' wolfers then we plugged up an additional cabinet with 2 12" wolfers. Both cabinets were 4 ohm. The amp went out and we aren't getting any lights on the face of cabinet. We took it apart and tested the wires to see if we were getting power and there is power going into the copper coil but not coming out. We thought that it might have blown a fuse but the 2 fuses that we can see look ok. What do you think is wrong

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This amp is designed for a 4 ohm load. By connecting the two cabinets, you presented a 2 ohm load to the amp and overworked it. I suspect that the amp will now need repair. I don't know the particulars of your model, but if you have a way to check transistors, you may be able to repair this yourself. Let me know if you want to attempt this.

Dan

Posted on Sep 24, 2008

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Where are the fuses on my home receivers


that all depends on the receiver, some have them on the outside of the rear of the cabinet, a simple twist will remove the cap that holds them in place,, Most newer models though have them inside the cabinet where the plug cord enters the system, be sure its unplugged when you remove the cabinet to inspect this though, as voltage will zap you if you touch the inner parts of the unit ,, Look at the circuit board where the plug wires attach,, thats where a fuse would be located if the unit has one, however, many of the new models don't have a fuse, and use diodes instead, Diodes are frequently used to conduct damaging high voltages away from sensitive electronic devices,, they usually lay on the board and are black in color with a silver line painted on one side, ook for anything like that which has burned or even exploded in the system,

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Hi, avatar6.jpgbudfaulkner7

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For removing the amp chassis, unscrew the bolts on the chrome plated strips on the top of the amp at the end of the right and left sides. The chassis should slide out the back. You may need to pull the speaker wires off the speaker, or pull the connector that hooks up the the chassis from the underside, which means you need to take out the speaker first.

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Hi chillin884

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Hi fingers 1

There will be some overlap in bass response that you may need to tune out to tone down the boomy bits. You could tune this out with a 31 band EQ Another approach is to use a crossover or low pass filter to the subs to get some control over your bass frequencies. Another thought, if you're using the rig for stage work, how does it sound out the front. It may be standing waves created by the bass bins, moving them to different monitoring positions may also help.

I am more than happy to answer any other questions you may have about it, just give me a hoy :) If you are still unsure, or have problems, then before you give a rating for this advice, please get back to me and we can try some more things.
Thanks for using FixYa, If you consider the advice I have given you as sound, a FixYa rating is a great reward for my efforts to help you. Cheers.

regards
robotek

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