The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Text excerpt from page 3 (click to view)
1-3
LOCATION OF SW3800 PC BOARDS
AMPLIFIER PCB
JACK PCB
LED PCB POWER PCB
SPECIFICATIONS
SUBWOOFER Subwoofer (not magnetically shielded design).......................................................................................................6.5" Output Power......................................................................................................................................1000W (4�,DIN) THD (Total Harmonic Distortion) ...........................................................................................................10% at 55 Hz Reproduction Frequency Response.......................................................................................................30 Hz-140 Hz Phase Switch....................................................................................................................................................00,1800 Input Sensitivity (Subwoofer In).................................................................................................................200 mVrms AC Power .......................................................................................................................................220 - 240V / 50 Hz power Consumption...........................................................................................................66 W (at 1/8 Rated Power) Dimensions (w x h x d)....................................................................................................200 mm x 310mm x 350 mm Weight................................................................................................................................................................6.8 Kg