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The home of vintage Altec Lansing loudspeakers

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Author Archives: GPA

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Great Plains Audio Model 212-8A

Great Plains Audio Posted on August 7, 2017 by GPAAugust 7, 2017
GPA 212-8A

Great Plains Audio designs and manufactures some of the finest loudspeakers in the world. We continue this tradition of excellence with the release of our newest loudspeaker, the Great Plains Audio Model 212-8A. The extension of usable lower frequency limits … Continue reading →

Posted in Featured GPA Products | Tagged 212-8A, Great Plains Audio

Great Plains Audio 604-8H III Rev. 2 Duplex

Great Plains Audio Posted on August 7, 2017 by GPAAugust 7, 2017
GPA 604-8H-III-Rev-02

The Great Plains Audio 604-8H III Rev. 2 is more than just an evolution in the classic series of 604 Duplexes, it’s an AUDIO REVELATION! For more than fifty years, there has been one studio monitor loudspeaker that has been … Continue reading →

Posted in Featured GPA Products | Tagged 604-8H III, DUPLEX, Great Plains Audio

Great Plains Audio JBL Service & Support

Great Plains Audio Posted on July 30, 2017 by GPAJuly 30, 2017
Vintage JBL Loudspeaker Repair

Great Plains Audio is now offering repair services for vintage JBL products. This includes new foam surrounds, cones, and diaphragms. We can also regauss your JBL Alnico magnets. Great Plains Audio uses only the finest available parts for speaker repair, … Continue reading →

Posted in Great Plains Audio Announcements | Tagged JBL, Repair, Service

Alnico Magnets and Degaussing (Losing their magnetic field)

Great Plains Audio Posted on July 27, 2017 by GPAJuly 29, 2017
Regaussing Woofers

Alnico magnets, by their nature, are easy to degauss (demagnetize) with drive. They will not change with time and their dependence on temperature is really small – maybe 1% at 100 degrees Fahrenheit. Alnico stability and resistance to back EMF … Continue reading →

Posted in Great Plains Audio Announcements | Tagged Alnico, Altec-Lansing, Degaussing, Demagnetizing, Magnets, Remagnetizing, Service

Altec Lansing Valencia: Improving a Classic

Great Plains Audio Posted on July 26, 2017 by GPAAugust 5, 2017
Altec Lansing Valencia

The Altec-Lansing Valencia 846B is an American audio classic that inspired the development of the legendary Model 19. It shares many similarities with the newer and larger Model 19. There were two versions of the Valencia: the 846A and 846B. … Continue reading →

Posted in GPA's Vintage Altec E-Zine | Tagged Altec-Lansing, Santiago, Valencia

The Altec Lansing Model 19-MR3: The Loudspeaker That Never Was

Great Plains Audio Posted on July 26, 2017 by GPAJuly 27, 2017
Altec-Lansing-M500-Maestro

The Altec-Lansing M500 Maestro is a largely lost and forgotten loudspeaker, but it is, perhaps, the best the company ever built. It arrived in the final days of Altec-Lansing, Inc., and production was cut short due to the sale of … Continue reading →

Posted in GPA's Vintage Altec E-Zine

Altec-Lansing DUPLEX Speakers

Great Plains Audio Posted on July 21, 2017 by GPAJuly 22, 2017
Original Altec-Lansing 604

Altec Lansing invented the first DUPLEX® Loudspeaker System in 1941 (some sources say 1943 – we’re really not sure). Called the “601”, it was of the field-coil type and included a small-format HF compression driver mounted to a 12″ low … Continue reading →

Posted in GPA's Vintage Altec E-Zine, Todd W. White's Corner | Tagged 604, Altec-Lansing, Altec-Lansing 604, DUPLEX

The Altec-Lansing Model 19-MR3: The Loudspeaker That Never Was

Great Plains Audio Posted on July 21, 2017 by GPAJuly 22, 2017
Altec-Lansing-M500-Maestro

The Altec-Lansing M500 Maestro is a largely lost and forgotten loudspeaker, but it is, perhaps, the best the company ever built. It arrived in the final days of Altec-Lansing, Inc., and production was cut short due to the sale of … Continue reading →

Posted in GPA's Vintage Altec E-Zine | Tagged Altec Model 19, Altec-Lansing, M500 Maestro

DIY Altec-Lansing Stonehenge III

Great Plains Audio Posted on July 21, 2017 by GPAJuly 22, 2017
Altec Stonehenge III

Perhaps one or the other of you recalls that about two years ago I had two short posts, Björns Altec Stonehenge III replicas as well as the associated. He was lucky to have a beautiful NOS pair of Altec 604-8 … Continue reading →

Posted in GPA's Vintage Altec E-Zine | Tagged Altec-Lansing 604, Stonehenge III

Stephæn’s Altec 604 Dream Speaker

Great Plains Audio Posted on July 21, 2017 by GPAJuly 22, 2017
Stevens Dream Altec 604 Loudspeaker

Looking back, it’s easy to comprehend why I’m a believer in the concept of thought as object – the notion that we bring into our lives that to which we give our attention. That’s how I manifested many of the … Continue reading →

Posted in GPA's Vintage Altec E-Zine | Tagged Altec-Lansing 604, Great Plains Audio 604

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Great Plains Audio, The Engine, Pascalite, “The Legacy Lives On”, and the Little Maestro are trademarks of Great Plains Audio, Inc. Altec, Lansing, Altec Lansing, Voice of the Theatre, and Duplex are registered trademarks of Altec Lansing Technologies Corporation. Iconic, Tangerine, and Mantaray are registered trademarks of the Iconic Manufacturing Company, LLC. University Sound is a registered trademark of the Telex Corporation. Symbiotik is a registered trademark of the Altec Corporation. JBL is a trademark of Harman International.

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