Anti Cable Zero-Autoformers

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2 replies [Last post]

Submitted By: AudioRigger

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Joined: Nov 20 2009

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Anti Cable Zero-Autoformers

Posted: December 8, 2009 - 9:51pm

I'm having good results with tube gear. I'm wanting to try a tubed amp and have Maggie speakers.

One suggested option is the Zero-Autoformers, which claim to multiply the impedance of a speaker, thus making them easier to drive. Anyone have experience with these?

Submitted By: mrlowry

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Location: Chicago, IL

Joined: May 30 2006

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Re: Anti Cable Zero-Autoformers

Posted: December 9, 2009 - 7:27pm

Because Magnepans have a nearly ruler flat impedance across the audio spectrum they are much kinder to tube amps than their efficiency rating would otherwise indicate. What amp are you currently using?

Submitted By: zeb

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Joined: Jan 2 2009

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Re: Anti Cable Zero-Autoformers

Posted: December 13, 2009 - 1:05pm

I've used my MG 3.5s happily with Jadis Defy-7 (100 W) and Antique Sound Labs Hurricanes (200W). Although Maggies are not very efficient, they present a fairly constant and easy load to the amp.