User manual BLUE SKY SUB 15 UNIVERSAL

[. . . ] Blue Sky International 70 Sea Lane Farmingdale, NY 11735 www. abluesky. com 1000-Watt subwoofer with adaptive x-over Blue Sky | SUB 15 Universal Owner's Manual Version 1. 9R | January 18, 2005 Contents Important 1 2 3 4 5 6 7 8 9 10 11 12 Safety Instructions _ __ __ __ __ __ __ __ __ __ _ Page 3 SUB 15 Universal Introduction _ __ __ __ __ __ _ Page 4 Important notes about the SUB 15 Universal and this Owner's manual _ __ __ __ __ __ __ __ __ __ __ _ Page 4 SUB 15 Universal - What is included?_ __ __ __ _ Page 4 Quick Setup / with filter setting instructions _ _ Page 5 System Signal Connections _ __ __ __ __ __ __ _ Page 6 Expanded Calibration Guide _ __ __ __ __ __ _ Page 7 A Tour of the Amplifier and I/O _ __ __ __ __ _ Page 8 Subwoofer Placement Guide _ __ __ __ __ __ _ Page 10 Technical Information _ __ __ __ __ __ __ __ __ _ Page 11 SUB 15 Universal Cabinet Dimensions _ __ __ _ Page 12 Factory Service Instructions _ __ __ __ __ __ __ _ Page 13 General Contact Details _ __ __ __ __ __ __ __ _ Page 13 Contents Safety Instructions 1 READ INSTRUCTIONS - Read all safety and operating instructions before operating this product. RETAIN INSTRUCTIONS - Retain these safety and operating instructions for future reference. HEED WARNINGS - Follow all warnings on this product and in the operating instructions. ATTACHMENTS - Do not use attachments not recommended by the product manufacturer as they may cause hazards. [. . . ] Then hard pan the signal to the right channel output and repeat for the right channel. Now that the system has been electrically calibrated turn ON your 2. 1 System (SUB 15 Universal + monitors). Feed 40-80Hz pink noise signal to the left channel only. Adjust the subwoofer level control until the subwoofer reads 85dBC (slow) at the mix position. The meter will bounce around a little, so you will need to do a mental average (I tend to filter out the peaks in my mind, so I don't set the sub too hot). The right channel should measure about the same and no additional adjustments need to be made. You can play the full-bandwidth pink noise, assigning it to the left and then the right channel (not at the same time). It may be a little higher, because below 30Hz the room may have a little extra gain. No adjustments should be made with Full Bandwidth pink noise, unless you have an RTA (real time analyzer). Step 7 Step 8 You are finished and the calibration process has been completed ­ enjoy! A note about the LF EXTENSION and PHASE switches: One of the SUB 15 Universal's unique features is a switchable low frequency response characteristic, of either 30Hz to 200Hz +/-3dB or, in "extended LF mode", 20Hz to 200Hz +/-3dB (anechoic), marked 30Hz and 20Hz respectively. extended The mode is ideal for large rooms that don't exhibit the room gain phenomenon of smaller sealed spaces. The only way to be absolutely sure of which setting is appropriate for your studio is to use an acoustic analyzer. Using the 20Hz in a sealed space, such as a small to medium size studio, can result in a rising LF response characteristic below 30Hz. Step 3 Step 4 The PHASE setting on the SUB 15 Universal should typically be set to 0, especially when the SUB 15 Universal is used with Blue Sky SATs. However, there may be times, depending on the speakers used with the SUB 15 Universal or because of certain acoustic conditions, that the phase setting needs to be proper between SAT and SUB. The only way set to 180, so as to get summation to be absolutely sure which setting is appropriate for your studio is to use an acoustic analyzer. Page 7 7. A Tour of the SUB 15 Universal Amplifier and I/O Page 8 7. A Tour of the SUB 15 Universal Amplifier and I/O LEFT / RIGHT XLR IN - These XLR inputs should be connected to the left / right output of your console or digital workstation. LEFT / RIGHT XLR OUT- These XLR outputs should be connected to the inputs of your left / right nearfield or mid-field monitors. UNIVERSAL / BLUE SKY FILTER SWITCH - This switch is used to either activate the variable state filters, or activate the fixed 80Hz low pass and high pass filters that are required for use with Blue Sky monitors. If you are using the SUB 15 Universal with the SAT 5, you will also need to set the 80Hz High Pass Filter on the SAT 5 so that it is "OUT" of circuit. VARIABLE CUTOFF FREQUENCY CONTROL KNOBS - These controls are for adjusting the dual 24dB per octave low and highpass filters. It is recommended that the SUB 15 Universal's filters be set one octave above the natural roll off of the nearfield monitors that are being used with the SUB 15 Universal. To activate these variable filters, the UNIVERSAL / BLUE SKY SWITCH - must be in the up position (VARIABLE). VOLTAGE SELECTOR SWITCH- This switch can be set to either 115 Volts or 230 volts. [. . . ] After finding the spot where the subwoofer has the best response in the room, place the subwoofer in that location. Now, listen from the main position and confirm that the subwoofers response is Page 10 9. Technical Information This next section outlines the components, specifications and performance data that make this product such a uniquely high value. In order to continually improve all of its products Blue Sky reserves the right to change these specifications without notice. SUB 15 Universal Active Subwoofer Enclosure * . 75" MDF with 1" front and rear baffle and internal bracing * Isolation feet included * Dimensions: 20. 75" H x 18" W x 20. 63" D (inc / heatsink and grill) * Weight 125 lbs. [. . . ]