Category Archives: BLOG

Welcome to BuildAudioAmps

Thank you for visiting. If you have just discovered this website, I would recommend that you start reading Project 65 found in the “Recently added” section on the right side of the homepage. There are more than 90 pages of built and tested audio projects to choose from...

If you’re still here you may proceed to Project 64 then all the way down to Project 1 or perhaps the “More Projects” section –if your time allows. You can also click on the “PROJECTS” menu for a short description of each project.

Since this is a build-your-own audio amplifier website, you may register for free to ask for more information regarding a certain project that you want to build. However, I do want to ask you to please limit to one request at a time. Build it, share your experiences and then hopefully start with another project –like what most of us are doing!

I would also thank those members for sending their comments and sharing their build experiences. 

And now more projects…

The previous series of audio power amplifier projects that I was working on was using the LME498xx series of high voltage input stage drivers. I have posted several of them starting with Proj8, Proj11~25 and finally in Proj39~42, but there’s really more than that and have not been posted in the website as shown in the Tinkerer’s Workshop. It all started with Proj8 when I had the PCB fabricated professionally  to verify basically its layout quality. As a result of the first build the audio quality it reproduced and represented was very impressive!

At present I’m working on a new series of audio power amplifier projects that uses an opamp at the front-end input stage of the amplifier. Currently, there are 16 amplifiers so far that have been built and tested starting with Proj62.

Here’s a look at some of the completed projects:

This one is rated at 100 watts using Linear Technology LTC6090 that’s driving a pair of ThermalTrak transistors.

The next one is another 100-watt amplifier using an Analog Device ADA4700-1 connected to a complementary pair of Darlington transistors from Sanken.

This one is a 100-watt amplifier using Linear Technology LT1166, which controls the bias and effectively eliminates the matching of the QFET MOSFETs.