Apart from the speaker which is polling slightly, there is an amount of distortion. Does anybody have the circuit diagram for this unit. The amplifier uses transistors drivers which are not made or sold any more and I cannot find any reference to them.
You can try another speaker given the rms is the same as the original......or the wattage.....If you get the same results sound wise after replacement......you might want to consider buying something else.
SOURCE: No Audio From Amplifier
I would first check for "rail votage" at the rectifiers... If all of your audio transistors are not getting around 40 volts then check the transistors you replaced. They should be getting a 5 volt (10 volt square wave is checked with a scope) "drive" signal. If half of your power supply transistors are not getting a drive signal then replace the kia494/tl494/kia594/tl594---whatever it is. thats the ic chip that supplies the "drive" signal to the power supply transistors. Also follow the board closely out of the power supply transistor to the 494 chip.. there should be some small driver transistors in between.. make sure they are not shorted or fried as well... let me knoe if you need more help
SOURCE: JBL Sub Amp Wiring Please
it seems rather redundant to bridge a mono amp. Unless the instruction manual states otherwise, i would assume that one speaker output is identical to the other (ran in parallel, like an A or B speaker, not like Left or Right), and you would present the amp with a two ohm load by wiring one speaker to each output. Bridging it may or may not work, but, again, it just seems redundant.
SOURCE: Amp Power light will not go on. Protection light is lit- Thump sound in speakers
It probably has shorted output transistors. To eliminate other possible causes, read through the following page.
Amplifier in Protect Mode - Troubleshooting
Let me know if you have any other questions.
SOURCE: I have an audiobahn a2300hct with blown components.
IRFZ48ZPBF-ND
^ from Digikey.com are a good replacement. You need to replace all of the Z48s on the side of the amp where the ones that failed were located. Digikey will also have the resistors. There may be other problems. If you're new to repair work, read through the following page.
Basic Amplifier Repair
Let me know if you have any other questions.
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IT IS OK. THANKS TO THOSE THAT OFFERED POSSIBLE REM`S.
I REPAIRED THE POLLING BY RE-ALIGNING THE SPEAKER BASKET.
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