User manual JBL LC2CH-H

[. . . ] For this reason, we do not recommend infinite-baffle mounting for Loud + Clear subwoofers. Thank you for purchasing a JBL Loud + Clear subwoofer. Subwoofer installation often requires woodworking skills and some experience disassembling and reassembling automotive interiors. [. . . ] Because a sealed enclosure provides the most control over woofer movement, a woofer mounted in a sealed enclosure will handle more power than a woofer mounted in another enclosure type. Sealed enclosures also provide more accurate sonic reproduction than other enclosure types so they are well suited to all types of music. Sealed-enclosure construction is straightforward, and there are many prefabricated sealed enclosures available. An optimum sealed enclosure is always smaller than other types of enclosures optimized for a particular speaker, so it requires the least amount of space inside the vehicle. Vented enclosures provide better efficiency in the 40Hz ­ 50Hz range, but this efficiency comes at the expense of sound in the lowest octave (below 40Hz) and at the expense of some control and power handling. If you are using a small amplifier, a vented box will provide more bass output from less power. Be aware that bandpass enclosures can be quite large and may require a lot of space inside your vehicle. Warning!Playing loud music in an automobile can permanently damage your hearing as well as hinder your ability to hear traffic. We recommend listening at low levels while driving. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this product. S u b w o o f e r LC-S1050w LC-S1250w 120W RMS, 480W peak 93dB 38Hz ­ 500Hz 5" (127mm) 10-7/8" (277mm) 100W RMS, 400W peak 92dB 38Hz ­ 800Hz 4-9/16" (116mm) 9" (229mm) Specifications Power Handling Sensitivity (2. 83V, 1m) Frequency Response Mounting Depth Cut-out Diameter Thiele and Small Parameters 4 Ohms 3. 52 Ohms 29. 5Hz 71 Liters 4. 39 0. 29 0. 268 74. 99g 2. 02mH 2. 23mH 109. 23g 0. 33 0. 37 3. 18 109 Liters 27. 4Hz 3. 45 Ohms 4 Ohms Nominal Impedance Revc Fs Vas Qms Qes Qts Mms Levc Sealed-Enclosure Specifications 1 cu. (35. 88 Liters) Enclosure Volume Vented-Enclosure Specifications 1. 5 cu. (42. 46 Liters) 3" (76. 2mm) 7" (177. 8mm) 1. 75 cu. [. . . ] (42. 46 Liters) 3" (76. 2mm) 7" (177. 8mm) 1. 75 cu. (49. 54 Liters) 4" (101. 6mm) 10-3/4" (273mm) Enclosure Volume Port Diameter Port Length Bandpass-Enclosure Specifications 1 cu. [. . . ]