For this next set of measurements I’ll be looking at another amplifier designed by Uffe at Slowdiyer. There’s no particular reason that I chose another of these designs straight after looking at his recent offering beyond the fact that it’s conveniently available on the rack next to my computer. In addition, it gives me a…
Tag: measurements
Measuring the SlowMoy OPA1656
Following on from my last post, looking at integrating my existing equipment presented a small headache. I already have a headphones dummy load which, whilst not providing the exact impedance of my current headphones, does the job. The problem is that the outputs from the dummy load are BNC sockets, as it was originally designed…
Further (mis)adventures in measuring audio equipment
The most visited page on this site has always been the guide to distortion measurements, written when I had just discovered the thread on DIYAudio. That post, like many of my other posts here, was written more as a reference for me and this one fulfils much the same function. If it’s of use to…
Headphone amplifier power outputs
Following on from my last post where I showed the headphones dummy load, I thought I would post the measurements I obtained from the other headphone amplifiers I have built. It’s also an excuse to play around with my new toys. I knew that eventually I would end up with an oscilloscope, I spent a…
Headphones Dummy Load
A dummy load simulates your headphones by presenting the amplifier with an impedance as close to that of your headphones as possible, using high wattage resistors. There are a number of reasons you may wish to use this – but primarily you are able to protect your headphones and your hearing. You can use higher…
Akitika 1kHz Oscillator
In a previous post I detailed the setup I’ve begun to use to learn about measuring the distortion of some of my amplifiers. Acknowledging this setup is rudimentary, for those wishing to tinker further there are of course many options. As ever, improvements can be made by the utilisation of better (read more expensive) equipment…
A DIY approach to distortion measurements for audio amplifiers
I imagine I am typical of many DIY audio enthusiasts in that I build something and hope that subjectively it sounds good. However, I am also curious about the objective measurements of the equipment. I thought this level of analysis would be beyond my ability and budget, but an interesting thread appeared on DIYAudio.com recently,…