How Loud is the Distortion from Your Power Amplifier?
Would you put a washing machine in your listening room? If the answer is no, you may be surprised to discover that the distortion produced by your ...
Audio Application Notes
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Secrets Q&A with John Siau of Benchmark Media Systems
Secrets contributor Sumit Chawla recently caught up with Benchmark’s VP and Chief Designer, John Siau to get a little more in-depth on several subj...
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Audio Myth - "Damping Factor Isn't Much of a Factor"
Is damping factor important? Is a damping factor of 10 high enough? Do all amplifiers have a high-enough damping factor? What are the damping facto...
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Feed-Forward Error Correction
The Benchmark AHB2 power amplifier and HPA4 headphone amplifier both feature feed-forward error correction. This correction system is an important ...
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Laboratory Use of the Benchmark AHB2 Power Amplifier
SEAS, a well-known manufacturer of high-quality loudspeakers, selected the Benchmark AHB2 as a key component for use in testing loudspeakers. They ...
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Interpreting THD Measurements - Think dB not Percent!
Distortion measurements (THD, THD+N and IMD) are traditionally expressed in terms of percent. But what do 1%, 0.1%, 0.01% or 0.001% mean in terms o...
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Calculating the Performance of an Amplifier-Speaker Combination - Example 2
This application note can serve as an example for calculating the maximum sound pressure levels and noise output levels for any amplifier/speaker c...
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Speaker Sensitivity and Amplifier Power
Speaker sensitivity is a measure of how loud a speaker will play at a given input power or at a given input voltage. Sensitivity is normally measur...
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Calculating the Performance of an Amplifier-Speaker Combination
In this application note we calculate the maximum output level and noise level produced by an amplifier/loudspeaker combination. Use this example f...
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Power Amplifiers - A "First Watt" ABX Test
Using a double-blind ABX test, we verified that there was a clearly audible difference between two amplifiers at an output level of just 0.01 watt.
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Audio Myth - "Switching Power Supplies are Noisy"
In audio systems, switching power supplies can be much quieter than linear power supplies. The secret to this difference is hidden in the magnetic ...
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AHB2 Crossover Distortion Measurements
These measurements and scope photos demonstrate the effectiveness of the feedforward system in the AHB2. From the first Watt to the last Watt, the ...
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Amplifier Crossover Distortion
Most audio power amplifiers suffer from a defect known as "crossover distortion". This distortion is particularly troublesome at low output levels....
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The HPA2™ Headphone Power Amplifier
Many Benchmark products include our HPA2™ headphone amplifier. Unlike most headphone amplifiers, the HPA2™ is actually a small power amplifier. Why...
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What High-Resolution Audio is NOT
"Low-Resolution Hardware Cannot Deliver High-Resolution Audio" The music industry is struggling to define High-Resolution Audio or "HRA". In doing ...
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The AHB2 - A Radical Approach to Audio Power Amplification
Radical! The performance of the AHB2 would not have been achievable without taking a radical approach to power amplification. In many ways, the A...
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The CE Mark - A Photo-Tour of Immunity Testing
Testing for Immunity to Interference Most people have seen the CE mark on electronic equipment, but few have had the opportunity to witness the ...
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