6Guided Tour - VX3500 Rear PanelHartke SystemsDistributed Exclusively bySamson Technologies Corp.Hicksville, New York 11802MODEL 3500350 WATTS8 = 240 WATTS4 = 350 WATTSCAUTIONTO PREVENT SHOCK, DO NOT OPEN. NO USERSERVICEABLE PARTS INSIDE. REFER SERVIC-ING TO QUALIFIED SERVICE PERSONNEL. TOPREVENT FIRE OR SHOCK HAZARD, DO NOTEXPOSE TO RAIN OR MOISTURE.ASSEMBLEDIN R.O.K. SERIAL NUMBEREFFECTSENDRETURN BALANCEDIRECT OUT0SEND RETURNPOSTPRENORMALGND LIFT~ AC INPUT115V/230V 50/60HzFUSE8A/250V, 300W (115V)4A/250V, 740W (230V)21 43 5 8 93 6 7 10SPEAKEROUTPUTMINIMUMIMPEDANCE4 OHMS1. Fuse sled - This contains a fuse holder and shows the currently selectedvoltage rating for your Model 3500. Make sure the voltage rating is correctly setbefore powering up the amplifier! Fuse ratings are 8 amp for 115 vac and 4amp for 230 vac. For information on how to change the voltage rating, seeAppendix C on page 18.2. AC input - Connect the supplied standard 3-pin “EEC” plug here.3. Speaker output – The VX3500 internal speaker system is connected here.WARNING: In order to get the full 350 watts of power and the maximum outputvolume, the VX3500’s internal speaker system has an impedance of 4 ohms. Donot connect additional speakers to the SPEAKER OUTPUT, unless you discon-nect the internal speakers. Connecting external speakers without disconnectingthe internal speaker system may result in serious damage to your amplifier thatwill not be covered under the warranty.4. Fan - The fan provides vital cooling to your Model 3500. Make sure that it iskept free of all obstructions and that cool, fresh air is accessible at all times.Also, try to ensure that the Model 3500 is used in a dust-free environment.