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Home→Tags 604E Super Duplex

Tag Archives: 604E Super Duplex

Altec-Lansing 604E Super Duplex

Great Plains Audio Posted on July 25, 2017 by Jeff MarkwartJuly 25, 2017

I received an unexpected opportunity to perform electro-acoustic measurements on a pair of 604E Super Duplex speakers in early 2008 thanks to a long-time owner seeking improvement in their sound. He had been using the original Altec Lansing N-1500A series … Continue reading →

Posted in GPA's Vintage Altec E-Zine, Jeff Markwart's Corner | Tagged 604E Super Duplex, Altec-Lansing
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