Benchmark Media Systems is fully operational with most of our staff working remotely. Our warehouse and fulfillment center is shipping and receiving on a normal schedule.

0

Your Cart is Empty

Crossover Distortion - Video Clip

March 14, 2016

Crossover Distortion - Video Clip

The AHB2 - A new and radically different audio power amplifier!

Dick Olsher once said that "the first Watt is the most important Watt"

Posted by Benchmark Media Systems on Friday, March 11, 2016


Also in Audio Application Notes

COVID-19 ... Don't just survive!
COVID-19 ... Don't just survive!

March 23, 2020

A Week Ago, Life was Normal

How fast things can change!

It is March 23, 2020 and we are currently battling the worldwide COVID-19 pandemic.

This application note will be a departure from normal. I will make a few observations about the current situation and then look at the nuts and bolts of how we reconstructed our operations in less than 48 hours. Benchmark is 100% operational, but nothing looks the same as it did last week.

- John Siau

Read More
Rules of Thumb for Music and Audio
Rules of Thumb for Music and Audio

April 01, 2019

As an engineer I like to use "rules of thumb" to make quick estimates that help to explain the physical world around me.

These rules of thumb are easy-to-remember approximations that eliminate the need for complicated and needlessly precise calculations.

If you feel discombobulated by the complexities of high school physics, there is hope! I encourage you to step back and take a fresh approach.

If you learn a few simple rules of thumb, you can unravel mysteries of the physical world, amaze your friends, and yourself.

In this paper I will present 15 simple rules that I find useful when working with music and audio.

- John Siau

Read More
Feed-Forward Error Correction
Feed-Forward Error Correction

October 11, 2018

The Benchmark AHB2 power amplifier and HPA4 headphone amplifier both feature feed-forward error correction. This correction system is an important subset of the patented THX-AAA™ (Achromatic Audio Amplifier) technology. It is one of the systems that keeps these Benchmark amplifiers virtually distortion free when driving heavy loads. It is also the reason that these amplifiers can support 500 kHz bandwidths without risk of instability when driving reactive loads.

This paper explains the differences between feedback and feed-forward systems. As you read this paper, you will discover that you already understand the benefits of feed-forward correction because you use it instinctively to improve a feedback system commonly found in your automobile. If feed-forward correction can improve your driving experience, it may also improve your listening experience!

- John Siau

Read More