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Studiophile SBX
Users Manual
Your Your Studiophile SBX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
First Things First . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
In the Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Correct Power Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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Your Studiophile SBX The SBX is a high-quality subwoofer designed to deliver extremely low frequencies in conjunction with stereo pairs of studio reference monitors such as the M-Audio Studiophile BX8 or BX5. In fact, so many consumers have subwoofers in their home and car entertainment systems that you’re not really mixing accurately without having a sub yourself. M-Audio’s engineers designed the SBX to meet professional quality performance standards and to provide superior value. Your SBX is
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First Things First In order to avoid risk of damage and insure optimum performance from your SBX Subwoofer, please take time to read this manual before you proceed to unpack and install it. In the Box Carefully remove the SBX from the carton, paying extra attention to avoid touching or damaging the speaker cone. If the system is damaged in any way or does not contain all parts, contact your dealer immediately. We recommend that you save the carton in the event that you need to transport or ship
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Rear Panel Features: 1. Power Mode LED: This LED indicates the power status. If the auto-muting circuitry is engaged, this LED will be amber if there is no audio signal to the SBX, and green when the SBX receives a signal. If “Auto-Power” is switched off, then this LED will remain green. 2. “Level” control knob: This knob controls the amplifier level of the SBX. The gain range is from minimum to maximum, labeled “Min” and “Max,” with Min being full attenuation and Max being full volume. 3. Phase
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Connecting the SBX and Your Main Speakers Most applications will utilize the SBX’s internal Stereo Bass Management System to realize maximum benefit. There are, however, two possible operational modes that you may use when connecting your SBX and your Mains, or “Satellite” stereo speakers, i.e., 1) using the SBX with bass management and 2) using the SBX without bass management. Using the SBX with Stereo Bass Management To take advantage of the SBX’s internal Stereo Bass Management System, your m
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Using the SBX without Stereo Bass Management You may wish to use the SBX with an existing external bass management system, or with bass management defeated on the SBX. See section, “Setting the HPF Bypass Switch” for more information on defeating bass management. With bass management defeated, you may still use the speaker setup illustrated above. With the HPF Bypass switch set to “On,” the L & R XLR Outputs will operate in a “Thru” mode, passing the original signal at the Input section directl
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Connecting an Additional Subwoofer If you have a large monitoring environment requiring greater subwoofer sound pressure, you can connect as many SBX cabinets as desired in a daisy chain. Simply connect the Extra Sub Output (located in the Output section) to the Input-L or Input-R input of second SBX (you may use the Extra Sub Output to connect to another brand of subwoofer). In this instance, you will want to have the HPF Bypass switch set to “On” on the second SBX subwoofer so that bass manage
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Optimizing the Rear Panel Settings Level Phase Subwoofer Satellites 140Hz 100Hz 140Hz 100Hz 80Hz 80Hz Min Max 0° 180° 50Hz 180Hz 50Hz 180Hz There are four control knobs on the rear of the SBX: “Level,” “Phase,” “Subwoofer” LPF cutoff frequency, and “Satellites” HPF cutoff frequency. These combined controls make it possible to optimally match the low bass frequencies from the subwoofer to your unique combination of satellite speakers, room characteristics and subwoofer position. Because of these
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Setting the Subwoofer LPF and the Satellites HPF The fundamental concept behind the Stereo Bass Management System is to isolate the upper and lower frequency ranges and direct them respectively to the component best suited to reproduce them. In order to accomplish this, the SBX utilizes a crossover network to determine how different frequency ranges are distributed to the subwoofer and satellite monitors. db 0 - 5 - 10 - 15 - 20 140 50 175 70 100 30 50 100 175 500 Hz 10
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This crossover network consists of two main components: a 2nd order (12 db/octave) low-pass filter that limits the upper frequencies that the subwoofer has to reproduce (shown above), and a high-pass filter that limits the lower frequencies the satellite monitors have to reproduce (shown below). The Subwoofer LPF cutoff frequency (#4) and Satellite HPF cutoff frequency (#5) controls adjust frequencies of the low- and high-pass filters, respectively. Both have a range of 50 to 180 Hz. db 0 - 5 50
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If your satellites are properly damped at the bass response as shown in curve “a,” set the two crossover frequencies to be identical. If your satellite speakers are under-damped (boomy sounding) as shown in curve “b,” experiment with setting the Satellite crossover frequency control higher. If they are over-damped (dry sounding) as shown in curve “c,” experiment with a lower setting. You may want to note the final control settings in case they are accidentally altered. + 5 b db 0 a - 5 c - 10 -
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while gradually increasing the volume of your audio system. If you begin to hear a sustaining sound quality before you are able to advance the volume control to a setting representing loud listening, acoustic feedback is a problem. You may need to move either the turntable or the SBX to remedy this problem. Alternately, try placing an anti-vibration pad under the turntable. Replacing the Fuse The SBX is protected from power anomalies by a fuse. In the event that the SBX does not seem to have pow
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Contact Information If you have any questions, comments or suggestions about this or any M-Audio product, we invite you to contact us by using the following information: M-AUDIO U.S. M-AUDIO Deutschland (Germany) 5795 Martin Road, Irwindale, CA 91706-6211, U.S.A. Kuhallmand 34, D-74613 Ohringen, Germany Sales Information: 626-633-9050 Sales Information: 49 7941 98 7000 Sales Information (email): info@m-audio.com Sales Information (email): info@m-audio.de Tech Support: 626-633-9055 Technical Supp
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Technical Specs Studiophile SBX Specifications* : • Type : Bass-reflex powered subwoofer • Woofer Driver : 8-inch mineral-filled polypropylene cone with high-temperature voice coil and damped rubber surround • Frequency Response : 30Hz – 180 Hz • Low-Pass Filter : Butterworth –12dB/octave <325Hz, -24dB/octave > 325Hz • Crossover Frequency : Adjustable 50Hz - 180Hz • Input Sensitivity : 89dB • Amplifier Power : 100W @100Hz, 4 ohm, 0.1% THD • Dynamic Power : 120W • S/N Ratio : > 100dB below full o
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SBX-050604 16
