The Wharfdale mixer The feasibility of running this mixer designed for mains use was covered in a previous post. In that article I ended up running the mixer from PP3 batteries connected in pairs to give +/-9V. I had ascertained that the mixer could run down to +.-7V and all that would be affected is … Read more
Most mixers have separate volume controls for each channel. This one has “balance controls”. Read more
A simple DIY busking amp. All you need is a speaker and a a box and the rest is pretty cheap. Read more
Look anywhere on the web and you will be told you need an audio interface to connect your mic to your MacBook, or you need to switch to a USB mic. Well, it ain’t necessarily so. Read more
Testing Lead Acid’s I have four old lead acid batteries stored in the garage. All of these batteries have been retired for some time but I keep them in the garage and charge them up every 3-6 months. This is the technique I used to measure the capacity of these batteries:- Charge the battery … Read more
Old AA battery testing Read more
