Hi normaly, at least you have two protections, one for shorts and the other is to protect loudspeakers from DC. For shorts you can see Apex AX20 detection pro. This is in amplifire section always and the power resistor R24 act like detection.
Thank you for your advice. I have built the NX400 amplifier and it works well. Which shield should I connect the PRO to?
This Apex protection is DC protection, short protection and temperature protection.
Hello and thank you. The first protector I put was made with upc1237 and I think it also has a short circuit protector.
Hello. I built two nx400 amplifiers yesterday. Unfortunately, there are dc voltages in the output, what is the reason?
Hello. 13 volts in one of the amplifiers and 42 volts in the other.Does the amplifier protector I made with upc1237 not have short circuit protection?
Nice work, did you conected the signal ground to the main ground, if you did so you should have to see your work again.
Hello. To power the pre-amp-fan-mp3 player-protection and other things, should they be powered separately?
Received the NX400 and small preamp modules recently.... started the build..
This is how I clamped the mosfets to the heat sink:
The layout:
...
This is how I clamped the mosfets to the heat sink:
The layout:
...
Hi Mr mile.i have many irfp250M...(not irfp250/irfp250N)
Can I use in apex nx14 or nx400?
And I made many amp..why in ofthen your amplifier use a1837/c4793? They are very expensive and finder in my location.
Can I replace with A940/c2073؟
I like APEX's NX14 (400), but after doing well, the adjustment of the static current will continue to decrease. What is the reason why it cannot be stable at a fixed value? Sorry, I am not good English, I used Google Translation