The HiFi Five Podcast

The HiFi Five Episode 29:  Field Coil Loudspeakers
GUESTS
Frank Doris --  Editor of Copper Magazine, Senior Associate Editor at Positive Feedback
Rich Pinto -- Founder and Designer, Treehaus Audio
Peter Qvortrup -- Founder and Managing Director, Audio Note UK
Ken Songer -- Founder and Designer, Songer Audio

TOPICS
Why are field coil drivers something special sonically?
Permanent magnets and electromagnets both generate a magnetic field.  Why does the sound coming off the cone sound different when it's moved by one type of magnet versus the other? What is the technical advantage of using an electromagnet?Are most field coil drivers fabricated in-house or bought off the shelf?
Does the type of power supply — tube or solid-state — affect the sound of the driver?
How does the sound change as you change the power supply voltage to the electromagnet?  Why?
Is there any scenario where a permanent magnet driver is the better engineering choice than a field coil driver for a loudspeaker?
Are there any specific objective measurements which demonstrate the technical superiority of field coil drivers?
Can you imagine traditional loudspeakers manufacturers like Magico or Wilson moving to field coil drivers?

The HiFi Five Episode 28:  Multi-Channel for Audiophiles
Guests:
Ulrike Schwarz — Grammy award-nominated co-founder of multi-channel recording firm Anderson Audio New York
Andrew Quint — Senior Writer at The Absolute Sound 
Arian Jansen — founder and designer of Sonorus Audio
Danny Kaey — Sonic Flare, hifi reviewer

The HiFi Five Episode 27:  AXPONA 2026 Show Report with Jeff Dorgay, Erin Hardison, Lee Scoggins and Dave Solomon

The HiFi Five Episode 26:  How to Select a Loudspeaker and Room Placement

Shanon McKellar, audio and music reviewer for Analog Planet

Steven Norber, founder and designer of PranaFidelity dynamic driver loudspeakers, and Director of Audio Engineering of Von Schweikert Audio

Greg Roberts, founder and designer of Volti Audio horn loudspeakers

Florian Wiegand, founder and designer of Clarisys Audio ribbon loudspeakers, and proprietor of Audio Excess, a distributor and dealer in Switzerland

Episode 25:  Measurements for Subjectivist Audiophiles
Ron Resnick (host/moderator):  WhatsBestForum
Brent Butterworth:  Wirecutter, Audio Unleased, Audio Journalist
Danny Kaey:  EMM Labs, Sonic Flare, HiFi Reviewer
Ralph Karsten:  Atma-Sphere