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Acoustic Research

Fusing AR Speaker Systems (4 pages, 8MB, August 1977) Acoustic Research's fuse size recommendation pamphlet for the following Acoustic Research speaker systems:
  • AR-1x, AR-2a, AR-2ax, AR-2x
  • AR-3, AR-3a, AR-3a Imp.
  • AR-4, AR-4x, AR-4xa
  • AR-5, AR-6, AR-7, AR-8
  • AR-10π, AR-11, AR-12, AR-14
  • AR-15, AR-16, AR-17, AR-18
  • AR-LST, AR-LST-2

(Information on fusing AR-9 is below, in the AR9 Owner's Reference Manual section)

The FNM fuses mentioned in this pamphlet are now made by Eaton / Cooper Industries / Bussman. The product webpage for the FNM fuses is here.
 

AR Full 5-Year Warranty (4 pages, 5MB, November 1978) Acoustic Research warranty document, explaining the full 5-year warranty.
AR Spare Parts List (4 pages, 5MB, January 1984) Acoustic Research spare parts list, mainly for grilles, logo plates, fuses, etc.
AR Factory Approved Independent Service Contractors (1 page, 1MB, November 1978) List of approved Acoustic Research independent service contractors.
AR-9 info

AR-9 Instructions (4 pages, 10MB, April 1978) Quick installation and use instructions for the Acoustic Research AR-9 loudspeaker.

AR-9 Owner's Reference Manual (52 pages, 99MB, November 1978) The full owner's reference manual of the Acoustic Research AR-9 in a single PDF file. Instructions on fusing the AR9 are included in this manual, and excerpted below.

sample page of AR-9 Owner's Reference Manual (1 page, 2MB, November 1978) page 7 of the manual with the same resolution as the full manual above. Zoom in to see the small numbers on the axes of the graph.
Fusing The AR-9 pages of AR-9 Owner's Reference Manual (2 pages, 6MB, November 1978) pages 23 and 24 of the manual, excerpted so that you don't have to download the entire manual for fusing information.

AR-9 Fusing For BiAmplification (1 page, 1MB, February 1979) Private letter from Acoustic Research explaining how to fuse the AR9 for biamplification.

AR-9 Engineering The AR-9 (16 pages, 9MB, January 1978) The engineering concepts behind the AR-9. Written by Tim Holl, Director of Engineering, Teledyne Acoustic Research.

AR-2ax Loudspeaker Review (2 pages, 6MB, 1970) - review of the "new" AR-2ax.  High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-2ax loudspeaker.
AR-3a Loudspeaker Review (2 pages, 7MB, January 1968) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-3a loudspeaker.
AR-4x Loudspeaker Review (1 page, 3MB, date unknown) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-4x loudspeaker.
AR-5 Loudspeaker Review (2 pages, 6MB, January 1969) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-5 loudspeaker.
AR-6 Loudspeaker Review (2 pages, 5MB, March 1971) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-6 loudspeaker.
AR-7 Loudspeaker Review (2 pages, 6MB, August 1973) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-7 loudspeaker.
AR-8 Loudspeaker Review (2 pages, 6MB, January 1974) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-8 loudspeaker.
AR-9 Loudspeaker Review (2 pages, 10MB, October 1978) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-9 loudspeaker.
AR-LST Loudspeaker Review (2 pages, 9MB, January 1972) - High Fidelity Magazine / CBS Laboratories review of the Acoustic Research AR-LST loudspeaker.
For more information about Acoustic Research speakers, I recommend visiting The Classic Speaker Pages.