User manual VELODYNE SC-IC DATASHEET

[. . . ] Read and follow the instructions below to insure safe and proper system operation. To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical shock, do not open speaker enclosure or amp chassis cover. Please refer all service questions to your authorized Velodyne dealer. Prior to Installation Please unpack the system carefully. [. . . ] The detachable cord allows for easy replacement should the original be damaged. (22) Master Power Switch Press the POWER switch to the ON position to activate the amplifier. If the unit is to be left unused for an extended period of time, move this switch to the OFF position to prolong the life of the amplifier. REAR PANEL CONNECTIONS ­ DETAILED EXPLANATION The SC-1250 is equipped with both speaker-level and line-level inputs. Use the RCA/Phono type "INPUT" jacks when connecting from a pre-amp, signal processor, or line-level crossover. To do this, depress BOTH the Crossover UP and Crossover DOWN buttons simultaneously. The numeric LED will show indicating that the low-pass crossover has been defeated. To reactivate the low-pass crossover, simply push the crossover UP or crossover DOWN buttons. -- A W o r d A b o u t Yo u r R e c e i v e r ' s C r o s s o v e r and the SC-1250 Crossover Your Velodyne SC-1250 amplifier is designed to operate using the full range audio signal for input when using the built-in crossover. Many home theater processors/receivers (Dolby Digital®, DTS®, THXTM) have a "subwoofer out" jack that performs this same function and are designed to be used with a powered subwoofer. In these installations, you may want to bypass the crossover in either the processor or the Velodyne SC-1250 as described above. If you choose to do this you should stagger the frequencies, (i. e. , 120 Hz subwoofer, 80 Hz processor) for best results. Note: If not using an external crossover, you should use the built-in crossover for optimal performance. 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. To exit model selection mode, use the power switch on the back panel to power down and power up the unit. You should see the model you selected for 2 seconds on the LED display before the display reverts to the volume. Using the SC-1250 to Drive Two Subwoofers Once the model selection process is completed, no other adjustments are needed to enable the SC-1250 to drive one or two subwoofers. Usage This section addresses day-to-day usage of your SC-1250 amplifier. Remote Control The features of the SC-1250 remote control are listed below. · POWER -- This button forces your SC-1250 unit into standby mode. The power LED turns amber, the numeric LED shuts off, and the amplifier puts out no power. The unit will remain in this mode until the POWER button is pressed again. Note: The master power switch on rear panel must be on in order for the front power button to function. To unmute the subwoofer, press the MUTE button again and the original volume setting shows on the LED. Figure 6: SC-1250 Remote. · EQ -- This button automatically EQs the subwoofer using a 7 band internal graphic equalizer. To use this feature, first plug the supplied microphone into the Mic-In jack on the back panel of the subwoofer and place the mic in your preferred listening position. Then, by pressing EQ on the remote, the subwoofer emits 12 "sweep tones" that cover the frequencies between 20 and 150 Hz. [. . . ] By pressing presets in EXACTLY the following order on the remote, the unit's power light will blink indicating that you have restored defaults. Preset Preset Preset Preset Preset Preset Preset Preset 1: 2: 3: 4: 4: 3: 2: 1: Movies R&B ­ Rock Jazz ­ Classical Games Games Jazz ­ Classical R&B ­ Rock Movies When you press the presets in the above order, the numeric LED will display "P3" indicating that you have restored defaults. The unit's volume is reset to level 30 out of 80. C a r e o f yo u r A m p l i f i e r a n d S u b w o o f e r Do not use any harsh detergents or chemicals to clean the SC-1250 chassis or the subwoofer cabinet. Abrasives, detergents, or cleaning solutions will damage the finish on the SC-1250 chassis or the subwoofer cabinet. [. . . ]