Copper


The Evolution of the Loudspeaker: From Horns to...

Issue 208Paul's Placeweb-2517

Loudspeakers have come a long way since their inception. From the early days of horn speakers (and yes, there are still horn speakers in use today, but this is a...

Table of Contents – Issue 207

Issue 207Opening Salvoweb-2517

“A composer is a guy who goes around forcing his will on unsuspecting air molecules, often with the assistance of unsuspecting musicians.” – Frank Zappa In this issue: What if...

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PS Audio in the News – Issue 207

Issue 207PS Audio in the Newsweb-2517

Positive Feedback published a highly positive, extensive, in-depth review of the Aspen FR10 loudspeaker, and interviewed designer Chris Brunhaver. Reviewer Juan C. Ayllon said: “Voices were rich and natural, acoustic...

One Size Doesn’t Fit All, Part Two: Microphones...

Issue 206Paul's Placeweb-2517

After our brief examination in Issue 205 of the recording chain front end – the microphone – it's good not to forget what follows the microphone. In the same way...

The Other Folk Singers, Part One

Issue 206Featuredweb-2517

I belong to a listening group that gets together to socialize and listen to music. We meet in each of our homes on a rotating basis. The host provides the...

PS Audio in the News

Issue 206News and Reviewsweb-2517

The PS Audio AXPONA 2024 exhibit was featured in their YouTube coverage, including these behind-the-scenes setup videos: PS Audio at AXPONA 1 PS Audio at AXPONA 2 Here’s a video...

Singer/Songwriter Mat Kearney: Everything Left ...

Issue 206Disciples of Soundweb-2517

18 years ago, the world was introduced to Mat Kearney through his breakthrough single “Nothing Left To Lose.” It was a song so perfectly written and performed that it almost...

PS Audio in the News

Issue 204News and Reviewsweb-2517

A number of PS Audio products won 2024 Editors’ Choice Awards from The Absolute Sound. The products that received this accolade include the Stellar S300 stereo power amplifier, Stellar M1200 mono power...

PS Audio in the News

Issue 203News and Reviewsweb-2517

The DirectStream DAC MK2 received a 2023 Brutus Award from Dave and Carol Clark at Positive Feedback. In the review Dave noted: “The DirectStream DAC MK2 is a major improvement...

On the Scene at AES New York 2023

Issue 201Show Reportweb-2517

As Frank Doris and John Seetoo noted elsewhere in this issue, AES New York 2023 was a rousing success. The conference always has something for everyone; it’s a trade show...

PS Audio in the News

Issue 201News and Reviewsweb-2517

Positive Feedback has a review of the Stellar Phono preamplifier in Issue 130. Michael Laurance said, “It's exciting when a component makes a tremendous difference the moment it becomes a...

Still More from AXPONA 2023

Issue 192Show Reportweb-2517

Part One of Don’s show report ran in Issue 190. Editor’s Note: You might have noticed that some of our show reports happen sometime after the shows occur. This is...

Octave Records Expands The Art of Hi-Fi Series ...

Issue 192Octave Pitchweb-2517

Octave Records has released The Art of Hi-Fi Volume 02: Soundstage, the second in its series of reference-quality recordings that showcase a different aspect of high-fidelity audio reproduction. The Art of Hi-Fi Volume 02:...

Impressions of AXPONA 2023

Issue 187Frankly Speakingweb-2517

I’m calling this “Impressions of AXPONA 2023” rather than “AXPONA 2023 Show Report” because this time out, I didn’t get to walk the show floor much. I was based in...

Octave Records Debuts The Art of Hi-Fi Series w...

Issue 180Octave Pitchweb-2517

PS Audio’s Octave Records’ has introduced an all-new series called The Art of Hi-Fi. Each recording in the ongoing series will showcase a different aspect of high-quality audio reproduction, beginning...

Octave Records Debuts The Audiophile’s Guide: T...

Issue 173Octave Pitchweb-2517

PS Audio’s Octave Records now offers its latest release, The Audiophile’s Guide: The Loudspeaker, a book and companion SACD/download that tells listeners exactly how to get the most out of...

Audio Nirvana (I Found It!)

Issue 171Speaker Storiesweb-2517

A little background: the first article I wrote for Copper back in 2019 was about a speaker demonstration at the home of the late designer and engineer Siegfried Linkwitz (“A...

Pilgrimage to Sturgis, Part 23

Issue 165New Vistasweb-2517

  “Willie G. Davidson will be at the local Harley shop today, Montana, wanna come with us to meet him?” Chip asked over breakfast. “Not sure about that Chip, don’t...

Rallying With Lemons, Part Two

Issue 164Featuredweb-2517

In the first half of this travelogue of the 2022 Rocky Mountain Breakdown Lemons Rally (see my article in Issue 163), we passed through Colorado and New Mexico, and arrived in...

Octave Records Releases The Audiophile Referenc...

Issue 163Octave Pitchweb-2517

PS Audio’s Octave Records has released two more titles on vinyl LPs: The Audiophile Reference Disc, created to help listeners get the best out of their stereo systems by providing reference-quality music and test...

Amped Up

Issue 141AUDIO ANTHROPOLOGYweb-2517

Art Dudley's personal, well-worn copy of The Tube Amp Book, Volume 3 by Aspen Pittman, 1991. The page with the schematic for the Fender Bassman Model 5F6-A (introduced in 1958...

Art Dudley: A Tribute

Issue 141FRANKLY SPEAKINGweb-2517

On July 11, 2021 at Brown’s Brewing Company in Troy, New York, a memorial event was held to celebrate the life of Art Dudley, who passed away on April 14,...

Dude Ranch

Issue 122MUSIC'AL NOTESweb-2517

“Great recovery Roy,” yelled the wrangler as I tightly pulled back on the reins of my horse whose front legs had collapsed on the steep downward slope. This happened on...

Autumn

Issue 69Opening Salvoweb-2517

Welcome to Copper #69! The aspens are starting to turn yellow here in Colorado, and  Rocky Mountain Audio Fest takes place October 5-7. Depending upon the machinations of publishing, it will either be forthcoming,...

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Analogic

Issue 43FEATUREDweb-2517

A wise man once said “the most difficult thing that there is to do in the world, is to separate a man from his suffering”. Had I heard that earlier...

Change of Title

Issue 36web-2517

Hap Nielsen pulled his pickup off the rural highway onto a dirt road that angled off into trees, and parked it out of sight of headlights. He and the others...

Maroon Bells

Issue 25PARTING SHOTweb-2517

One of the most iconic Colorado spots for photographers to gather in the early morning hours in fall, Maroon Bells near Aspen Arca Swiss 4x5, Schneider 90mm

Colorado State Flower

Issue 23PARTING SHOTweb-2517

With winter's white covering our mountainous state it's a distant memory of more verdant days. The summer's warmth sweetens the forest scent, especially in Aspen groves where our state's flower...