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These ALTEC loudspeakers are handcrafted and tested to meet ALTEC’s standards – the most rigid in the industry. In 1945, ALTEC introduced an amazing series of two-way speaker systems to the world of motion picture entertainment. Their success was instantaneous! Following prolonged competitive test, this series of speaker systems became the only commercially available sound for motion pictures approved by the Research Council of the Academy of Motion Picture Arts and Sciences . . . thereby, establishing the Voice of the Theatre as the “standard” of the entire industry. The Voice of the Theatre. Known by name. Known by sight. Known by reputation. A legend in its own time. Once an exclusively professional product, overwhelming demand forced its being made available to those who insist upon its unparalleled presence and efficiency for their homes. The only way to duplicate the excitement inherent in the sound of the theatre – the Voice of the Theatre. Excitement . . . drama . . . realism . . . emotion . . . Adjectives that describe the ways you feel during the film experience. The experience of sight – and of sound. The experience that is the Voice of the Theatre – a legend in its own time. The legacy of the A7 is a famous one. Starting life purely as a cinema playback unit, it was soon in demand for use as a studio monitor and home reproducer. Many engineers still swear by the A7, and have made it their standard of comparison for everything audio. Very versatile and efficient, the A7 is ideally suited for use wherever good projection over long distances of wide-response material is required. 030519 A7 Owner's Manual UNPACKING IMPORTANT: Protect the Loudspeaker The loudspeaker cone assemblies are fragile and should not be touched. Step 1 Before removing the protective shipping material, look for obvious signs of shipping damage such as severely crushed corners or deep punctures that may have marred the speaker cabinet. If severe damage has occurred, immediately contact the shipping company to file a claim. Step 2 Using a knife, carefully cut away any plastic which is holding the cardboard-encased speaker to the pallet. Step 3 Use snips to cut the straps holding the cardboard- encased speaker to the pallet. Step 4 Open top of box and then slide the box up off of the speaker. The grill and horn mounting brackets are packaged separately inside the shipping box. Step 5 Remove the protective cardboard, foam, and plastic packaging material. IMPORTANT: Use Caution when Moving the Loudspeaker Because each A7 weighs approximately 200 pounds, use caution when moving the loudspeaker to avoid personal injury. Use multiple people or a dolly and protective blankets when moving the loudspeaker off of the pallet and to its final location. IMPORTANT: Retain the Packaging Material If there is a need to return the loudspeaker under warranty conditions, you will need the packaging material to properly repackage the loudspeaker for transit. 030519 A7 Owner's Manual COMPONENTS The following components are contained in the A7 loudspeaker’s shipping container. Cabinet – Model 828 This A7 Loudspeaker cabinet enclosure is hand made from 13 layer Baltic Birch and covered with a durable black splatter finish. Low Frequency Woofer – 15” Model 515-8G Molded cone. 8 ohm impedance. High Frequency Sectoral Horn – Model 511B Die cast aluminum 90° X 40° sectoral horn. High Frequency Compression Driver – Model 902-8T Aluminum diaphragm. 8 ohm impedance. Front & Rear Mounting Brackets Used to mount the horn assembly on top of the loudspeaker cabinet. Crossover Network – Model N-900A 900 Hz high quality air-core inductor with low-loss polypropylene capacitors. The dial adjusts the relative loudness of the high frequency driver. Binding Posts – Cardas ACBP-S Two pair. Non-magnetic, billet Brass, short binding post, Rhodium over Silver plate. Billet brass nut, Gold plate. Glass filled nylon insulator. ALTEC ships the A7 jumpered for mono wiring. Simply remove the jumpers for bi-amplification. Binding posts accept either spades or banana plugs. Grill Fabric grill with metal ALTEC logo which inserts into the bass reflex port. Manual This document which contains product use and warranty information. 030519 A7 Owner's Manual ASSEMBLING IMPORTANT: Finish Assembly Before Connecting to Amplifier For protection, this A7 loudspeaker is shipped with the horn assembly fixed inside the cabinet. For optimum sound quality, follow the assembly steps below for repositioning the horn assembly on top of the loudspeaker cabinet. Step 1 If you would prefer to keep the horn assembly positioned inside of the cabinet, please proceed to the next section “Placing Stereo Loudspeakers”. Step 2 Remove the rear panel by using a 5/32” hex key to remove the bolts around the perimeter of the rear panel. Be aware that the crossover network is attached to the rear panel and that wires connect the crossover network to the drivers in the cabinet. Take care not to apply tension to those...