Simple Ripple Eater PSU for the sx and kx-Amplifiers
A high quality double sided through hole plated and silk screened PCB for $10.99 (excl. shipping) is available for this power supply from Jim’s Audio here: Ripple Eater PSU for kx and sx Amplifiers Here is an Excel file…
Hifisonix kx-Amplifier
The Hifisonix kx-Amplifier is a 28 Watt class A DIY power amplifier featuring low distortion, wide bandwidth and fast rise/fall times. It can be operated either in pure class A mode, or in class AAB mode with a lower output…
Amplifier History: The JBL SA-600
The JBL SA-600 amplifier was launched by the James B. Lansing company in 1966, and this article was published in January 1967. I’ve included this in the hifisonix power amplifier library because it is one of the earliest – if…
The Endless Semantic Debate: Current and Voltage Feedback Amplifiers
It seems some are still agonizing over the ‘current feedback’ versus ‘voltage feedback’ definition. Clearly a case of people wanting to continue to flog a horse that was laid to rest five decades ago during the heyday of the analog…
JLH 10 Watt Class A Amplifier
This is a copy of the original John Linsley-Hood article that appeared in Wireless World in 1969. This design, almost 50 years old, is still built in its hundreds all over the world. A quick root around on the web…
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