All articles

A Universal Continuous-Time Active Filter

Author(s): Ramaswamy Ramkumar

For loudspeaker design and prototyping you'd want a simple, flexible system to play' with the crossover. You would want a simple way to vary cross-over...

€2,99 

Simple Loudspeaker Correction Filters

Author(s): Gevel Marcel van de

Active filter stages having two (usually complex) poles and two (usually complex) zeroes can be very useful in applications such in active loudspeakers for correcting...

€2,99 

A Universal Simulated Power Inductor

Author(s): Ramaswamy Ramkumar

Dr. Ramaswamy is back with another usefull piece of lab equipment. Imagine a box with two connections where you can 'dial in' any inductance between 10mH and...

€2,99 

Correcting Transducer Response with an Inverse Resonance Filter

Author(s): Raalte Steven van

Steven van Raalte set out to combat the resonance in phono cartridges. Manufacturers often rely on this resonance to compensate for the hf roll off caused by...

€2,99 

A low-noise preamplifier with variable-frequency tone controls

Author(s): Self Douglas

In 1996, Douglas Self published a design for what became known as the Precision Preamplifier, which included a treble/bass tone control with variable turnover...

€2,99 

Optimizing RIAA realization

Author(s): Self Douglas

Douglas Self approaches 'RIAA optimization' from an unexpected slant: which circuit configuration makes the most effective use of the capacitors used, in...

€2,99 

An Essex-Echo Audio Tutorial: Analogue Equalization

Author(s): Hawksford Malcolm

Drawing on decades of research and experiments, Malcolm Hawksford reviews the most often encountered equalization methods in audio: the ubiquitous RIAA phono...

€2,99 

Grammophone preamplifier noise calculations - the 3852 Hz rule revisited

Author(s): Gevel Marcel van de

Gramophone preamplifier noise calculations – the 3852 Hz rule revisited      Vol 8

Marcel van de Gevel

The noise of an...

€2,99 

The RIAA Phono-Amp Engine II - Burkhard Vogel

Author(s): Vogel Burkhard

Burkhard Vogel set out to rectify some shortcomings of his Phono Engine I which was presented in “The Sound of Silence”, specifically the switching...

€2,99 

The Devinyliser

Author(s): Self Douglas

This investigation grew out of a letter that was published in HiFi News at the end of 2015, where Patrick Wallace points out that vinyl signals always come with a...

€2,99 

Pages