Ohm Speakers 
I prefer acoustic music played without amplification – particularly the human voice without microphones and PA. Luckily, we all listen to spoken voices every day and have learned from…
Sound Pressure Levels in Live Versus Recorded Music.
Headphones: Imaging & Danger
Headphones: imaging and hearing loss. “Head Monster” Noel Lee is rumored to have told Beats founders Jimmy Iovine and Dr. Dre, that ‘Headphones are the new speakers.’ The sales…
Lucky Timing and My Best Business Decision
As mentioned in Getting Started, Tech Hifi began in my dormitory room at MIT. The local audio dealers pressured the school to have me move off campus or stop selling. I moved across the…
Amplifier Damping – Another Wet Blanket.
How does amplifier damping factor (DF) impact the sound of loudspeakers and, thus, the sound of music in your room? Tube amps usually have DFs of about 20 or less while many solid state…
Microphone Techniques Affect Imaging:
Speakers are the weakest link in almost all stereo systems. This has been my opinion for many years. In fact, it was the subject of the very first of this series of posts over a year ago…
Getting Started (my beginning in audio)…
Iowa: For some, the college experience is life-changing. Mine certainly was. Music played only a minor role in my youth (trying out for the band in junior high and having a piano at home);…