User manual VELODYNE SC-1250 REV D

[. . . ] SubContractorTM Series Amplifier / Subwoofers USER'S MANUAL S C - 1 2 5 0 A m p l i f i e r, SC-8, SC-10, SC-12, SC-15, S C - I W, S C - I F, S C - I C S u b w o o f e r s . www. velodyne. com SubContractor User's Manual I At t e n t i o n ! . www. velodyne. com SubContractor User's Manual II Vo r s i c h t ! . www. velodyne. com SubContractor User's Manual III At t e n z i o n e ! . www. velodyne. com SubContractor User's Manual IV Ta b l e o f C o n t e n t s Congratulations . . 10 ­ A Word About Your Receiver's Crossover and the SC-1250 Crossover . . 18 . www. velodyne. com SubContractor User's Manual V Congratulations Congratulations on your purchase of a Velodyne SubContractor Series subwoofer. This system represents the state-of-the-art in low frequency reproduction. [. . . ] When connecting the SC-1250 to your subwoofer(s), use a quality speaker cable that is at least 14-gauge. Be very careful to avoid any loose or frayed strands that could result in a short, causing a dangerous condition and possible damage to your unit. Extremely large gauge wire may not properly fit in the binding posts, resulting in a poor connection and possible short circuits. . www. velodyne. com SubContractor User's Manual 10 A Wor d About Subwoofer Placement Subwoofers operate at extremely low frequencies, which are primarily omni-directional. Keep in mind that frequency response and output level can be drastically influenced by placement, depending on the acoustic properties of the listening room. Typically, the optimum location for a subwoofer is in a front corner of your listening room. This location will usually offer the greatest output levels and optimum low frequency extension. The worst location for a subwoofer is typically far away from any walls, close to the center of your room and near an opening or doorway. When using a pair of SC subwoofers in stereo, it is preferable to place each subwoofer by the satellite of the same channel. Typically, a minimum distance of one to two feet from your TV to the subwoofer will be adequate to avoid any magnetic interference. Remember that the built-in 7 band EQ will help to get the most performance out of your subwoofer no matter where it is placed. Do not place the amplifier next to sources of heat such as furnace registers, radiators, etc. Likewise, do not place the amplifier near sources of excessive moisture, such as evaporative coolers, humidifiers, etc. The power cord should be routed in such a way that it will not be walked on, pinched or compressed in any way that could result in damaging the insulation or wire. Selecting the Subwoofer(s) to be Controlled Your SC-1250 can control a variety of Velodyne SubContractor Series subwoofers as well as generic passive subwoofers. Special internal software settings are designed to maximize performance and reliability depending on the model of subwoofer being controlled, so it is important to match the SC-1250 amplifier with the subwoofer(s) it is controlling. When the unit is first powered up, the model being controlled is displayed for 2 seconds on the numeric LED before the display reverts to the volume setting. The subwoofer to be controlled is shown as follows: Model SC-8 SC-10 SC-12 SC-15 LED Display Model S C - I n - Wa l l ( S C - I W ) SC-In-Floor (SC-IF) SC-In-Ceiling (SC-IC) LED Display 8 I0 I2 I5 IW IF IC GS G e n e r i c S u b w o o f e r ** ** - The generic subwoofer setting is for passive subwoofers not on the above list. CAUTION: there is no anticlipping or anti-distortion protection on this setting. To change the subwoofer to be controlled, first power down the amplifier using the power switch on the back panel (DO NOT use the power button on the front panel). Then, turn the switch on while depressing any of the buttons on the front panel (crossover up or down, or volume up or down). To change the model, simply push the crossover up or crossover down buttons and the model changes on the LED display. Once the desired model is seen on the LED display, simply release the button. You don't need to do anything else - the model to be controlled is automatically stored in the SC-1250's www. velodyne. com SubContractor User's Manual . 11 memory. [. . . ] During normal conditions, the amplifier may be left on continuously without any problems. If you plan to leave the unit unused for an extended period of time, we recommend that you turn off the unit by the master power switch on the front panel. . www. velodyne. com SubContractor User's Manual 15 T roubleshooting and Service Before seeking service for your amplifier or subwoofer, please re-check all systems. If the unit has been running at high levels, one of the protection circuits may be engaged. If the protection circuitry is active, the unit may cycle on and off until operating parameters return to normal. [. . . ]