Altec 604e. Altec 604E Super Duplex Speakers 19641972 HiFi.ru Footnote 2: In this video, Early Bender, of vintage-audio specialty firm HiFi Town, describes a not-uncommon situation that mimics an open voice-coil but is in fact fairly easy to repair. Footnote 1: Great Plains Audio, whose staff includes a number of former Altec employees, also manufactures their own modern version of the 604, which they call the 604E Series II
Vintage Altec 604E SUPER DUPLEX Speakers with 612 ORIGINAL ENCLOSURES from www.ukaudiomart.com
I've rebuilt the crossovers for mine using a Jeff Markwart design for the 604E that is essentially an Altec N-1500A with an added MF EQ section Probably cost me about $100-$150 in parts, and about about 4 hours of time to build and install them.
Vintage Altec 604E SUPER DUPLEX Speakers with 612 ORIGINAL ENCLOSURES
A hybrid speaker unit used in recording studios around the world. A good condition pair of Altec 604E are worth $1300-$1800 It seems Altec tried to phase out 604 production with the introduction of the 605
ALTEC 604E. Probably cost me about $100-$150 in parts, and about about 4 hours of time to build and install them. This removed all shout from the horns, and I recommend building them
Altec 604E speakers Photo 2341121 UK Audio Mart. Altec reintroduced the 604 as a standard cataloge item with the "Super Duplex" 604E . Now, Altec has incorporated two decades of experience and progress with the most recent research advances, the newest engineering developments, and the latest laboratory refinements to produce a contemporary PLAYBACK version of those famous 604-type speakers: The Altec Super Duplex 604E.