Question about Audiofonics ADF-241 Car Audio Amplifier

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Audiofonics adf-241 no power all wires connected fuses ok.

Audiofonics adf-241 goes into protect then shuts off. i disconnect the ground and goes back into protect and connect the ground again and it shuts off. same with the positive cable. checked all the fuses and they're fine. all the wiring is connected properly. worked for months then stopped working. nothing smells fried, just loses all power.

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Hello pimprascalz,

Many amps will go into protect mode if one of the speaker wires is shorted or grounded, or if the voice coil(s) are defective. Try disconnecting the speaker wires one at a time and see if the amp still goes into protect upon power up. Likewise, some amps will go into protect if one of the inputs is grounding out. Again, to troubleshoot, disconnect them one at a time and try the amp. Next, make sure that the amp itself is not grounding. Most amps need to be mounted to a nonconductive surface. If the case contacts the frame of the vehicle, it can cause a problem. If the problem is not in the speaker wires or the input cables, the amp case is not contacting the vehicle frame, and you have checked your power, ground and turn-on leads, then the amp itself is probably faulty.

Hope this helps.

Posted on May 19, 2009

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When i put on power protect light come on


If the amp is in protect mode, it probably has shorted output transistors. To eliminate other possible causes, do the following. Disconnect all speaker wires from the 'amplifier's speaker terminals' and disconnect RCA/signal cables from the amp. If it powers up normally, the speakers/wiring need to be checked. If it still shuts down (goes into protect mode), the amp almost certainly has shorted output transistors and will need to be repaired. If the amp only shuts down when it's driven to relatively high volume, you need to confirm that you have sufficient power supply voltage. With your multimeter set to DC volts, the black meter probe on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red probe alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts on either the B+ or remote line, you need to check the wiring feeding whichever line is too low. If 'both' the B+ and remote turn-on lines are low and your battery is fully charged, you may have a bad ground connection.

Dec 15, 2010 | JBL BP1200.1 Car Audio Amplifier

1 Answer

Will not put out sond


Hello billyelder,

If the amp is powering up but not producting any sound, there are 4 possible causes.

1) Incorrect or faulty wiring.
2) No input or input too low for the amp.
3) Defective speakers.
4) Incorrect amp or head unit settings.

Start by checking all of the wiring and onboard fuses. Especially check the speaker wiring and make sure there are no shorts or grounds and that the insulation is not nicked or frayed. Check the RCA cables by substituting a known good pair. Check the receiver (head unit) to see if there are any settings that need to be turned on for the preamp outputs to work.

Test the speakers on another output to determine that they are functional.

Check the amp settings and insure that filters, crossovers and gain controls are properly set. If your wiring and the settings all check out and the speakers work on another output, the amp itself is probably defective.

Hope this helps.

Sep 01, 2009 | Audiofonics ADF-241 Car Audio Amplifier

1 Answer

My amp is on protect!!!


If the amp is in protect mode, it probably has shorted output transistors. To eliminate other possible problems, do the following. Disconnect all speaker wires from the 'amplifier's speaker terminals' and disconnect RCA/signal cables from the amp. If it powers up normally, the speakers/wiring need to be checked. If it still shuts down (goes into protect mode), the amp almost certainly has shorted output transistors and will need to be repaired. If the amp only shuts down when it's driven to relatively high volume, you need to confirm that you have sufficient power supply voltage. With your multimeter set to DC volts, the black meter probe on the ground terminal of the amp (not on the point where the ground wire connected to the vehicle) and the head unit on (so the amp will have remote voltage applied), touch the red probe alternately to the B+ and remote terminals of the amp. If the voltage is below ~11 volts, you need to check the wiring feeding whichever line is too low. If both the B+ and remote turn-on lines are low and your battery is fully charged, you may have a bad ground connection.

Jun 09, 2009 | Rockford Fosgate Punch P5002 Car Audio...

1 Answer

I just had this thing running maybe a month ago no problems nothing working great. now about a month later its turning on then going off i seriously am retarded when it comes to this **** i had it hooked...


Hello bloodyspokes, For the amp to go immediately into protection, something is probably shorted, grounding out, or not grounding properly. First, remove and check the 40A onboard fuse just left of the power/ground/remote terminals. If the fuse is OK, disconnect the speaker wires and try powering up. If it powers up OK, check the speakers and wiring. If it doesn't, disconnect the inputs and try again. Check the grounds of both the amp and your receiver. If these check OK and the amp is still not powering up properly, it's most likely an internal component failure and the amp needs service. Hope this helps.

Jun 03, 2009 | Kenwood KAC-7202 Car Audio Amplifier

1 Answer

How to change the Red Protect light to Green Power.


If the amp goes into protect mode, it's likely due to shorted output transistors. To eliminate other possible problems, read through the following page:

Amp in Protect Mode - Troubleshooting

If the problems are not with the wiring, follow the link at the bottom of the page to the Amplifier Repair Primer page.

Let me know if you have any other questions.

Sep 21, 2008 | Audiofonics ADF-240 Car Audio Amplifier

1 Answer

BLOWN FUSES


If the fuse only blows when the amp is driven hard, the impedance of the other speakers is likely too low.

Sep 21, 2008 | Audiofonics ADF-243 Car Audio Amplifier

1 Answer

Help


From what did the wire become disconnected (amp, battery, cap...)?


Jun 18, 2008 | Audiofonics ADF-241 Car Audio Amplifier

1 Answer

Power lights


no that is not normal. That means your amplifier is still getting power. Try connecting your remote wire from your cd player, to an on / off switch (auto parts store) and from the on / off switch to the amplifier. When you turn your car off, turn the switch off and your amp will no longer have power.

Feb 20, 2008 | Audiofonics ADF-241 Car Audio Amplifier

1 Answer

Audiofonics amp


Reconnect one speaker per channel and swap the RCA cables (L > R and R > L) to see if the working channel switches sides. If not, move all switches and controls to see if any are intermittent.

Jan 10, 2008 | Audiofonics ADF-241 Car Audio Amplifier

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