Hiraga and his crossover network design.Considering the age of the speakers, they are relatively blemish free. I left the original crossover networks in place, but play the speakers with crossovers built from a schematic originating with French audio legend Jean Hiraga. ![]() The speakers came with model N501-8A crossovers. This particular pair uses model 825 cabinets with a utility gray finish, model 416-8B Alnico woofers, model 511B sectoral tweeter horns, and model 802-8D alnico magnet drivers. These are two way speakers with crossover at 500 Hz. I am told that they spent many years in a church in Montana hanging up in the ceiling space. The speakers were built by Altec Lansing in November of 1976. ![]() This page is about a pair of Altec Lansing A7-500-8 Voice Of The Theatre Speakers I set up in the Pete Riggle Audio listening room, known as The Garden of Earthly Delights.
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