User manual FURMAN RA1220

[. . . ] A two volt rise or drop in AC voltage can dramatically impact power amplifiers and powered sub-woofers, robbing them of their peak power capability, . This causes them to overheat, and veer from their optimum performance capabilities. Premium performance requires Stable Regulated AC Power. Furman Sound's new RA-1210 and RA-1220 Stable Power AC Line Voltage Regulators provide a constant 120VAC while maintaining the ultra-low noise, cool operating, low-impedance operation that is the hallmark of the Furman Reference Series. Page 2 With the Reference Series exclusive Ultra-Low Noise Stable Power AC Line Regulators, Power Amplifiers and Powered Sub-Woofers perform at their full potential. [. . . ] If in doubt consult your dealer or local electrician. The RA-1210 and RA-1220 are manufactured with four rubber feet for placement on any table, cabinet, shelf, or floor capable of supporting its weight. Because of the Reference Series low-flux density Auto-transformer design, placement or proximity to other components is not critical, and the RI-1210 and RI-1220 do not produce any appreciable heat. Page 3 The Reference Series may also be rack mounted in a standard 19" rack by attaching the optional rack ears. These rack ears mount parallel to the back portion of the Reference Series' front panel. These optional rack ears are supplied with the necessary hardware and mounting instructions. The RA-1210 and RA-1220 require a Furman HRKIT-7 for rack mounting. When rack mounting, the (4) rubber feet located at the bottom of the RA's chassis may be removed. Simply loosen the Phillips screw that attaches each foot to the chassis by rotating the screw fully counter-clockwise until the foot falls free of the chassis. Due to the weight of the Reference series components, we recommend mounting these units at the bottom of your rack when choosing a mounting option. When rack mounting the RI-1210, RI-1220 or IT-Reference in tandem with your RA, we recommend placing the RA directly above the RI's or ITReference. This will allow the unit with the greatest weight to rest at or near the bottom of your rack. Once the unit is placed, the detachable AC cord must be attached to the rear panel IEC male socket. It resides in the lower left-hand corner of the rear panel when facing the rear of the unit. Next, the male NEMA-15 connector must be plugged into the appropriate AC socket. This AC cord will carry substantial unbalanced AC current, so it should be dressed away from critical signal carrying cables, or at the very least, cross them at a 90-degree angle. All 3-prong AC cords exiting this unit should be dressed away from signal carrying cables as well. If the RA-1210 or RA-1220 is used in tandem with one of Furman's Symmetrical Power conditioners, the RA should supply the Symmetrical Power Unit. Simply plug the AC input from the Symmetrical Power unit into any of the RA's analog AC outlets. In tandem operation, all of your system's components will be supplied from the Symmetrical Power unit, thus taking advantage of its additional filtering. For systems incorporating only the RA-1210 and RA-1220, your components may be supplied from either the Analog AC outlets. To power any component with a digital processor or switching power supply, we recommend the Digital AC outlets. These four Digital AC outlets feature additional filtering. Their location is clearly labeled on the rear panel of your Reference unit. [. . . ] If this occurs, the unit may need servicing. Safety Information Please read and observe all of the safety and operating instructions before the RA-1210 or RA-1220 is operated. Retain these instructions for future reference: · · · Do not disassemble or modify in any way. Keep away from moisture and extreme humidity. [. . . ]