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Subwoofer Enclosures Loaded Custom Fit

Passive OEM Loaded Subwoofer Enclosure Collection

Passive OEM Style Custom-Fit Loaded Subwoofer-Enclosures

Loaded subwoofer enclosures come in Passive or Active styles. Passive enclosures, or boxes, require an additional amplifier to produce sound while Active enclosures have amplifiers built into them and are self contained all-in-one systems.

Subwoofer drivers, also know as subs, are specific only to the lowest frequencies of the sound spectrum, and are the largest drivers in any car stereo. They are generally found in sizes of 8″ – 12″ diameters. Subs move massive amounts of air creating large pressure waves. These large pressure waves give that bottom end punch you expect from your kick drum, the undeniable funk of a bass guitar and the earthshaking bump of a house beat. 

The frequency range of a subwoofer generally covers the first 2 octaves of the sound spectrum, also known as the lows. Subwoofers require their own mounting structure called a sub box. Sub boxes are built to create negative pressure on the sub to help move their large diameter cones back and forth for accurate reproduction of low end frequencies. Custom subwoofer boxes are built to meet certain cubic air space specifications of sub drivers and are sometimes custom built to fit under seats or other hidden areas to maximize the use of space in the vehicle. JL Audio’s Stealthbox's are custom designed to fit many vehicles while minimizing the footprint needed to be installed in your car.

RMS vs. MAX power: The RMS rating of any speaker driver is the continuous power rating that the speaker is designed to withstand at a maximum continued volume rating. The RMS rating is the only number to go by when pairing your speakers with an amplifier. As an example a speaker with a 100Watt, or 100W for short, RMS rating and a 300-Watt Max rating is ultimately a 100 Watt speaker. The Max rating is the temporary spikes in voltage that the speaker can handle. A 100-Watt RMS / 300-Watt Max speaker is going to outperform a 100W RMS / 250W Max speaker at higher volumes, but may not be the more detailed reference speaker.

Ohms: The Ohm rating, or resistance rating, of a speaker is an essential part of a well balanced car stereo system. Many JBL factory speaker systems have 2ohm drivers. Most aftermarket speakers are 4ohm drivers. Replacing these types of factory speakers may require a wiring bypass of the factory amplifier.

Driver resistance ratings are essential when pairing subwoofer and speaker drivers with amplifiers. An amplifier that is 750W @ 2ohms might only generally be 500W or less @ 4ohms. When purchasing a subwoofer driver the correct pairing of a subwoofer’s RMS wattage and Ohm ratings with an amplifier’s output power rating is absolutely essential.

Frequency Response: Frequencies are measured in Hertz or Hz for short. The frequency response of speaker drivers will generally fall between 20Hz and 22kHz. At 20Hz the sound spectrum begins. Every time you double your frequency you move up one octave in scale. 20-Hertz to 40-Hertz covers the first Octave, 40Hz to 80Hz covers the next octave and so on. Subwoofer drivers are generally tuned to crossover at 80 Hertz. This can depend on the subwoofer type and the type of music you listen to.

2 products

  • JL Audio SB-B-X5E70/10W3v3 : Single 10" 500W Sub Box for BMW X5, 2007-2013 JL Audio SB-B-X5E70/10W3v3 : Single 10" 500W Sub Box for BMW X5, 2007-2013, shown installed.

    JL Audio SB-B-X5E70/10W3v3 : 10" 500W Subwoofer Enclosure @ 2Ω, 2007-2013 BMW X5

    Pre-Order Today!

    Single 10-Inch 2-Ohm 500-Watt Subwoofer-Enclosure for Select 2007-2013 BMW-X5 Vehicles The X5 artfully blends the dynamic attributes of a great road car with the utility and versatility of an SUV. What it doesn’t have is a real subwoofer system. The small woofers under the front seats can only do so much. JL's Stealthbox® design team has come up with the perfect subwoofer solution for the X5. It installs under the cargo floor and wraps around the spare tire, taking up no cargo space and remaining completely invisible. Inside the Stealthbox®, a 10-inch JL Audio subwoofer driver pounds out controlled and powerful sub-bass that will completely transform your listening experience. Specifications The Hard Data: Contains one 10W3v3-2 subwoofer in a sealed enclosure. 500 watt power handling. Wired for 2 ohm mono. Black steel mesh woofer grille is included. Installs beneath the cargo area floor in the passenger-side rear corner of the spare tire well without impeding access to the spare tire. Installation requires removal of under-floor tool stowage compartment and necessitates relocation of the included tools. Will not fit X5’s with 3-row seating option. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-B-X5E70/10W3v3 Installation Manual

    Pre-Order Today!

    $999.99

  • JL Audio SB-B-X5/10W1v3 : 10" 300W 2Ω Subwoofer Enclosure, 2000-2006 BMW X5

    JL Audio SB-B-X5/10W1v3 : 10" 300W 2Ω Subwoofer Enclosure, 2000-2006 BMW X5

    Pre-Order Today!

    Single 10-Inch 2-Ohm 300-Watt Subwoofer-Enclosure for Select 2000-2006 BMW-X5 Vehicles BMW's breakthrough Sports Activity Vehicle offers a beautiful balance of driving dynamics, luxury and utility. The only thing missing is an equivalent audio experience anchored by a true subwoofer system. The Stealthbox® solution for the X5 tucks away neatly behind the passenger side rear cargo panel and houses a robust 10-inch subwoofer driver.  While it mounts in the same location as the optional BMW subwoofer, the difference in performance is simply staggering. Specifications The Hard Data: Contains one 10W1v3-2 subwoofer in a sealed enclosure. 300 watt power handling. Wired for 2 ohm mono. Installs in the passenger side rear cargo area behind factory panel. Replaces OEM “subwoofer” system, if vehicle is so equipped. Stealthbox® products are built to order and generally ship within 5-6 business days of receiving your order. JL Audio SB-B-X5/10W1v3 Installation Manual

    Pre-Order Today!

    $899.99

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