Rockford Fosgate Punch 500a2 Car Audio Amplifier Questions & Answers
My Rockford 500 A2 amplifier
Make sure the amp is well ventilated, it needs to cool down or else it will shut itself off, then when it has cooled off enough it will turn on again. Also, check your wires especially your power wires. Make sure that they are the correct gauge. If everything looks ok then there may be a fault in the amp.
I just bought a punch
The spark could be from the capacitors in the amplifier charging. Make sure the main fuse from your battery is still good and also check all the fuses on the amplifier. Verify all the wiring is correct and make sure none of the wires from inside the positive cable are poking out and touching the vehicle or amplifier chassis. If you have a 1k ohm resistor, you can put it in series with the amplifier power line to slowly charge the capacitors. You can do that by following the directions from the link below. After doing all that, remove the 1k resistor, hook it all up and try it again. If it still doesn't work, make sure your remote wire coming from the head unit has a voltage on it when the head unit is on. You can get a cheap volt meter from a hardware store or wal-mart.
Fried 3 amps. Is it my car?
make sure you run your ground and power wires on one side of the car and the rca's on the other, keep them sepparate. if you have all wires running to your amp(rca's/12v power/remote), then you run the chance of either getting interference from the alternator, or if you have a pinched wire(usually by the door step) it may short with your battery wire. Double check your rca's and make sure they're ok and also check for corrosion on your wires.
I have 2 [email protected] and was wondering if I could send them off
they can fix it. it will cost more than having a repuatble electronics repair shop do the same thing. parts express. com has MOSFETS , resistors, ETC. If you burned a trace on the amp, rosin44 core solder has flux in the solder and you can repair that yourself with an iron , solder, and a little copper wirew.
Will light up but n sound
those are the output transistor that are burnt meaning the outputs are blown out and need to be repair/replaced.
a repair shop should be around 100 dollars to fix. good luck
I need to know how to wire this amp up!
The B+ terminal on the amp goes to the Positive battery terminal with a fuse inline probably at least 60amp for this amp. The GND terminal of the amp goes directly to the chassis of the vehicle (metal) and try to keep the ground 18" or under. The REM terminal of the amp goes to the remote turn on wire from your deck, usually the BLUE wire. Some decks have 2 one for an amp one for a electric antenna. Dont hook it to the power antenna wire or your amp will only work when the radio is on. Won't work with the cd player. Hook the left and right inputs (rca) to your source unit (deck). Hook your speakers to the left and right channels of the amp with the correct polarity (+) (-) . Set the cross over on the amp HP-AP-LP for what ever application you are using it for like subs or components. There is a frequency adjustment for the crossover on the opposite side of the amp. This should be set in accordance with your crossover selector and speaker requirements. The punch bass knob should only be used with a subwoofer application. The left and right gain turn up or down the gains of the amp. (power output) These are set depending on the output voltage of your preouts (RCA) on your deck. A small flat head screw driver can be used. Set them between 1/2 and 3/4 if you dont know but make sure they are the same. Your ready to go. Hope this helps.....
I get a better sound with my 250.2 than with my
Rockford Fosgate was bought out over 10 years ago. the amps you have are from that era. Its probable that the 250.2 was made before the change over, and is just a better quality amp. the a series amplifiers were some of the first produced by the "new" Rockford Fosgate, and they sucked, along with most of their products since.
I HAVE A PUNCH A2 AND WHEN I HOOK UP THE LEFT
If your speakers not wired up properly sometimes the bass can shake the wire off and it leads to a horrible crackly noise, make sure it's securely wrapped around and tied to the terminal. Otherwise it could be a blown speaker or you are trying to put more power into the speaker than the speaker can handle.
I think i hav most of the wireing figured out i'm
Basicly you just run your wire to the posative terminal on your battery, making sure to install a fuse holder within 16" of the battery, then attach the other end of the wire to the B+terminal on the amplifier.
Sub hook ups
There's a lot more factors involved than that.
- Power capability of the subs
- Type/size of the sub box
- Allotted space in the vehicle for the sub box
- Voice coil impedance of the subs versus the capability of the amp
Where to take my amp for repair
Contact Rockford for factory service.
If you don't want to send it to Rockford, ask the local audio shops who they use for amp repairs. If several use the same repair shop, it's probably a good place to send your amp.
Something Wrong With my Fosgate 500-a2 Amp
Is the amp being fed directly from the head unit's RCA preamp outputs or is it being fed by another amp's preamp outputs? Try temporarily wiring up a speaker you know is good in place of the sub and see if anything changes.
My Sub Doesnt Sound Good
The settings are all pretty much dependent on your ear. But some guide lines would be for the input gain, never turn it all the way up. Turn the gain up about half way possibly 3/4 of the way up. There should also be a filter, if you are powering subs then you want to filter out any high frequencies. So if there is a switch saying HPF or LPF you want LPF (Low Pass Frequency). Then there should be another "knob" that controls the frequency. At the least, you want your sub amp to be tuned below 50 Hz any lower is up to your ear. I hope this helped.
Have you checked on the fuse terminals?
Maybe the zener diode along B+ and ground got shorted when supply was reversed.
Check for for the continuity along the supply line. Also, consider if there was a sudden surge of supply that busted parts along the filter line of your unit.
Absence of sound
If you have another amp in the vehicle, swap the RCAs and speakers to see if you get sound through the other amp.
Generally, if the red light is on and there is no significant DC on the speaker terminals, the amp is in good working order (for the older Rockford amps).
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