User manual M-AUDIO SBX10

[. . . ] M-AUDIO SBX10 User Guide English ! RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION ! RISQUE DE CHOC ELECTRIQUE N'OUVRIR PAS ATTENTION: ! PRECAUCION: RIESGO DE ELECTROCHOQUE NO ABRIR LA TAPA CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). REFER SERVICING TO QUALIFIED SERVICE PERSONNEL AFIN DEVITER UN CHOC ELECTRIQUE ET LES CONSEQUENCES GRAVES QUI POURRAIENT ENRESULTER, TENTEZ PAS D'OUVRIR L'APPAREIL ET DE TOUCHER AUX COMPOSANTS INTERNES SANS LA PRESENCE D'UNE PERSONNE QUALIFIEE. PARA REDUCIREL RIESGO DE SACUDIDAS ELECTRICAS, NO DEBERA QUITARSE LA TAPA (NI PARTE POSTERIOR). CONSULTESE AL PERSONAL CAPACITADO PARA LAS REPARACIONES INTERNAS. WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. ADVERTENICIA: PARA EVITAR EL RIESGO DE INCENDIO O SACUDIDA ELECTRICA, NO DEBERA EXPONERSE ESTE APARATO A LA LLUVIA O HUMEDAD. [. . . ] Bass Reflex Port The SBX10 subwoofer has a vented enclosure containing a custom bass-reflex port tube with a circular cross section on the rear of the enclosure. The port effectively gives the subwoofer a smooth response down to 20Hz, and since its low-frequency contribution complements that of the front-firing woofer driver, the woofer stays linear and distortion-free throughout the passband. The port has also been designed using Failure Mode and Effects Analysis (FMEA) software in order to maximize output and minimize audible port air turbulence noise. Studiophile BX10s Deluxe Subwoofer7 d 7 English 4. XLR Outputs These jacks accept XLR connections with either balanced or unbalanced wiring, and are used for sending audio signal to your stereo direct-field monitors. The wiring of an XLR connector used with the XLR Outputs should be the same as what is listed for the XLR Inputs (7). 10. TRS Outputs These jacks accept 1/4" connections with either balanced or unbalanced wiring, and are used for sending signal to your stereo direct-field monitors. For balanced wiring, a three-conductor TRS plug is necessary. The wiring of a TRS connector used with the TRS Outputs should be the same as what is listed for the TRS Inputs (6). 11. Subwoofer Bypass/Defeat If you connect the enclosed footswitch to the Subwoofer Bypass jack on the back of the SBX10 subwoofer, you can use it selectively to bypass the low frequencies generated by the SBX10 subwoofer (including the amp, driver, and crossover), and send the full-bandwidth signal directly to your main monitors. This way you can audition mixes with and without the low-frequency extension the SBX10 subwoofer provides­all from the convenience of your mix position. As a visual indicator, the LED Indicator (2) on the front baffle of the subwoofer flashes red when in bypass mode. (Note: You can use any binary footswitch, such as an electronic keyboard sustain pedal, but we have provided one for your convenience. ) 12. Volume Control Use the volume control to set the output sound pressure from the SBX10 subwoofer to proper levels as required. 13. Power Switch This switch turns the subwoofer on and off. 14. Power Socket Connect the included 3-conductor AC cable to this jack, and plug the other end into an active AC outlet. 15. AC Voltage Select Switch Provides two selections, 115V AC and 230V AC, and should be set to match the "house supply" (receptacle) voltage of the country or location in which the speaker is used. The 115V setting is correct for the USA and Japan, while the 230V setting is correct for most of the UK and Europe. Make sure this switch is in the proper position for your area before attaching the power cord. Power Amplifier (not pictured) In order to generate a powerful, tight bass response, SBX10 uses a 240 watt amplifier, featuring a custom discrete transistor architecture. The amplifier has a carefully designed damping factor which, in conjunction with the mechanical and electromechanical systems built into the driver, helps eliminate the natural tendency of the driver to "ring" after input signal has ceased. This results in an extremely accurate and controlled bass response. You will notice that kick drums and staccato bass notes reproduced by the SBX10 subwoofer are tight and solid, as though coming from a large acoustic suspension system. 8 Studiophile BX10s Deluxe Subwoofer SBX10 Like the other components, the enclosure has an important role in shaping the overall sonic response. In order to provide more stable performance, the SBX10 subwoofer employs a special high acoustic efficiency medium density fiberboard (MDF) and unique interior reinforcement bracing designed to reduce sonic coloration and absorb vibration and impact generated as the subwoofer reproduces high SPL signals and transients. [. . . ] Remember, also, that the frequency of any given signal is inversely proportional to its wavelength. For example: At 40Hz, one wavelength is about 8. 5 meters or 28 feet; at 80Hz one wavelength is a little over 4 meters, or 14 feet; etc. Where to Start First of all, you should always place the subwoofer on the floor when you are using it­never on a table or speaker stand. One theory suggests that the best position for a subwoofer in a 2-channel system is on the floor half-way between your left and right direct-field monitors, with its front facing forward and in the same plane as the direct-field speakers. From there, you can adjust the subwoofer's position until it is most "correct. " Another theory dictates that you should start with the subwoofer in a corner of the room's floor, where the adjacent walls can help the subwoofer maximize the amount of sound it radiates; and then you can adjust the position to suit your specific monitoring setup. [. . . ]