500W Mono Amplifier

Hello Friends, in this post I make a 500 Watts mono amplifier. This is a class AB mono amplifier. Which can deliver up to 650 Watts RMS output at 4Ω ±65V, Test frequency 1khz. And 500 Watts RMS output at 8Ω ±70V, Test frequency 1khz. For this amplifier I used 5 pair of 2SC5200 and 2SA1943 Transistor. This amplifier has in-built speaker protection. The speaker protector has protection and an active Led, so you can easily understand whether your amplifier is in fault condition or normal condition. The speaker protector circuit is powered by 12 volts. If this circuit is connected to this amplifier output, and if the transistor burns out, this speaker protector will not allow current to flow through the speaker. For designing my PCB, I used EasyEda online software. Then I export the Gerber file (which you can download). And then I go to www.pcbway.com for manufacturing my PCB. PCBWay are the largest PCB manufacturer in China. They offer Standard PCB, Advanced PCB, Rigid-Flex PCB, SMD-Stencil and PCB Assembly Service. Here you get, 100x100mm 2 Layer PCB only at $5, And processing time within 24 hours. And they distribute, worldwide. The more you order, the less price you have to pay.

You just need to upload the Gerber File, and select the quantity, color, silkscreen, thickness etc. Then select your country, and shipping method and then Pay. PCBWay will deliver your PCB within 7-10 days.

After one week I received my PCB. You can see the PCB quality, it's awesome. I have ordered White PCB. But you can choose your PCB color. PCBWay provides a total of 9 color solder masks - Green, Blue, Red, Purple, Black, White, Yellow, Matte Black, and Matte Green. On PCBWay you can get 100x100mm 2 Layer PCB only at $5. Maximum size PCB you can get 500x1100mm. And the maximum Layer is up to 14 Layers. And If you order PCB the first time at PCBWay, then you get a $5 discount coupon. So upload your Gerber today and get the best quality PCB.

Gerber File:- https://bit.ly/42AXFis

License:- ©Technical Mriganka. You can't use this PCB Layout and Gerber File for commercial purpose. You can use this PCB layout and Gerber file only for Educational and DIY projects.

Testing Method After Complete This Amplifier

Series light test:- After complete this board don't forget to series light test. When you will on this amplifier via series light, it glow for some time (1 - 2 sec). Then series light will turned off fully. If the series light will fully turned off, then check the voltages.

Check Voltages:- Set Bias volt 0.5V to 0.7V. Set Dc offset volt 0V. Check Speaker Output and Audio Input voltage. Here you get no voltages 0.00V. If you get same voltages, then connect preamplifier to input and connect speaker to output.

Power Supply:- Recommended transformer 45-0-45V to 50-0-50V 8A-10A. For rectifier you can use GBJ2510 bridge rectifier and 2 pcs 10000uF Capacitor.