Category Archive: 250W Subwoofer Amplifier

Apr 03

250W Subwoofer Amplifier

I’m building a 5.1 surround sound system. Therefore I need a subwoofer. This project is the amp for that subwoofer.

The circuit drawings that I want to use for this project can found here:
The amplifier: http://marcusgun.awardspace.com/m250.html
The subwoofer filter: http://www.circuitsonline.net/circuits/view/69

 

Today I mounted the heatsink on the enclosure:

Kast met koelprofiel

Kast met koelprofiel

Mar 26

250W Subwoofer Amplifier – Update

I received 2 transformers (2x30V 750VA) that I bought on Kapaza. 1 of those 2 I’m going to use for this project.

Transfo

Jul 10

250W Subwoofer Amplifier – Update

I decided to build a enclosure myself because the old enclosure above is not pretty enough. I’m also going to replace the heat sink by 2 larger ones that I bought on a radio market.

The heat sinks will form the side’s of the new enclosure. The rest will be made from aluminium sheet.

Versterker kast

Oct 11

250W Subwoofer Amplifier – Update

Today I made a pcb with capacitors. On the pcb I soldered 12 3300µF 100V capacitors. I bought these cheap on a radio flea market.

elco print

elco print

elco print