I had expected that the aluminum tweeter diaphragm would result in shouty highs. The subwoofer helps in subtle ways, but the bass of the Altec A7 speakers is quite good on its own. I augment the bass with a giant subwoofer horn located in a loft above and behind the listening room. The reflex loaded bass goes adequately deep with rich timbre and beautiful midbass. Perhaps the first thing you should know about the A7 speakers is how wonderful they are when outfitted with a crossover using the Hiraga schematic, and using crossover capacitors of high quality. With my big horn subwoofer the band width is 20 Hz to 12 kHz. In my room the speakers play a band width from 42 Hz to 12 kHz. As audio equipment goes, these speakers can be a fantastic bargain. I recently touched up a few wear spots with interior latex paint matched to the original paint by the folks at Home Depot. 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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