Hi All,   First of all, I will say that I don't at this point have any images or schematics. I will work on uploading some tomorrow but for now I just have to describe this circuit. Sorry   The amplifier is a transistor power amp with an output stage like a Gilmore Dynamic amp...four...

I raided a thrift store today and got some Logitech speakers for $1.50. They quickly met with my hammer and I harvested the drivers.   Quick measurements reveal that the drivers have 3.2 ohms of series resistance and about 18.5 uH of inductance. There are four of them. I thought they would...

Hi all,   I have a couple of 12DQ6s in my toolbox. I don't intend to use them as transmitting tubes because I have quite a few other tubes that will successfully fulfill that purpose. I am considering using these at low voltage to drive headphones through a transformer. Here is what I'm...

I do believe that this is my first post here.   I'm starting to do research for a future project I want to do. I want to make my own dynamic headphones. The cups will be carved out of some sort of hardwood (maple might be my wood of choice, although I'm not sure yet. The main problem I have...