20 Most Recent Audiofonics ADF-243 Car Audio Amplifier Questions & Answers

check your speakers and speaker wires for shorts and/or grounds.

What you need to do, is also run the rca cable from the back of the deck to the amp. The speakers are already powered by the deck. You can then hook up your subwoofers. The switches are for your own taste.. you adjust them as you go.

First of all is the mosfet your talking about in the output section or in the power supply section? Most car amps use mosfets in the power supply section, some use them in the output section. To test the transistors in your amp, take a digital volt meter and set it to diode check. Then take the leads and put them accross the first and third legs of the transistors. Usally the red test lead on the first leg and black test lead on the third leg of transistor. If you get a reading of 000 then transistor is shorted. If you get a reading below 600 then transistor is on it's way out if not allready or it's next to a shorted transistor that is it's complimentry output transistor. comonly you will have 2 transistors working together, one NPN and one PNP per a channel, or 4 of them in a bridged type output circuit depending on the watts and how man channels your amp has. I was just looking at the specs of this amp and it's got me confused. It says it's a 2 channel but looking at all the info on different pages it says at 4ohm:200wattsx4 and at 2ohms:300wattsx4 and 1 channel mono 600watts into 4ohms. weird for a 2 channel. anyway that is how you test your transistors. Same way for the power supply section but, you will come accross a couple or more switching diodes that look like transistors and you will get a 000 reading when you test those like I specified. They rarely go out and most of the time there is only 2 of them. They will have a diagram like a diode on the front showing you which way the power flows. Let me know what you find out. Your amp should have went to protect mode if you smoked a mosfet. Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/mark_b53a7494531bf96d

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

hello try this www.eserviceinfo.com...takes a bit to work out how to get them...when you do you have to download bitzipper (these are rar files )..then adobe8 .bitzipper can convert to pdf files so you can read them ...hope you have some luck

All of the components with the IRFZ44N part numbers are the same. The rest of the information is the date/manufacturing code and isn't really important (although they should match if they were all used in the power supply). Digikey has them. The new lead free version is IRFZ44NPBF. The rectifier ->

take it to JAYcar or similar electronics shop to see if they have something suitable as a replacement

Most in a car would be 4 ohm, for the low impedance connections, and 8 ohm for high.

you dont have enough power for it. sell if for parts and buy a smaller amp and second battery.

I can't find a manual, but can assist with troubleshooting or tell you what to repair.