Altec 604e. Vintage Altec 604e SUPER DUPLEX Speakers with Altec N1500 CROSOVERS IN ALTEC LANSING 604E * Released in 1967 ¥ 139,300 (1 unit, around 1970) ¥ 148,300 (1 unit, after 1970 price revision) Commentary 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
Altec 604E Photo 4209492 US Audio Mart from www.usaudiomart.com
My 604 is very easy to drive and sound is very dynamic without feeling of any compression I have a pair of 604-8G's that I bought new in 1978 and have used them for home use every day since
Altec 604E Photo 4209492 US Audio Mart
A good condition pair of Altec 604E are worth $1300-$1800 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 A good condition pair of Altec 604E are worth $1300-$1800
Altec 604E Photo 4209492 US Audio Mart. As I explained in the June 2017 Stereophile, I own a pair of Altec 604 drivers—a version called the 604E, made from 1965 to 1972, which was designed with both a higher-compliance bass diaphragm and a treble horn that's better at dispersing high frequencies than previous versions Altec reintroduced the 604 as a standard cataloge item with the "Super Duplex" 604E .
Vintage Altec 604E SUPER DUPLEX Speakers with 612 ORIGINAL ENCLOSURES. "That the 604E can produce any high frequencies at all is down to the fact that it's a dual-coaxial driver—or, as Altec described it, a Duplex: each 604E comprises one 15" woofer and one horn-loaded compression driver with a 2.25" aluminum diaphragm, both with their own edge-wound voice-coils (copper for the woofer, aluminum for the. In other words, it made a little more bass, and a little more.