JBL PB1220 Preloaded Enclosure
JBL Updated: 2008-09-14 RSSNo one has as much experience designing and building subwoofer enclosures as JBL. Our speaker enclosures have traveled thousands of miles, touring with some of the world's top bands and have filled stadiums, auditoriums and local clubs with rockin' bass for half a century. Our car audio subwoofer enclosures are built to the same exacting standards as our professional boxes and are designed to be rugged and to sound great. The PB1220 enclosure feature 3/4" medium density fiberboard (MDF) construction, high-quality binding post terminals and a Power Series woofer. Unlike so many one-note-wonder enclosed subwoofers, the PB1220 feature wide bandwidth design, which provides more output between 20Hz and 40Hz and ensures you get all the bass you've paid for.
The JBL PB1220 provides superior performance to competing loaded enclosures primarily due to our revolutionary Slipstream™ Port. The slipstream port provides lots of surface area outside the box so that the air stays stuck together—the engineers call it an "Adverse Pressure Gradient". That gradual change from high pressure to low pressure eliminates the distortion we hear as "whacking". Because the area of the port in the middle is much smaller than the mouth of the port, the port can be MUCH shorter than a cylindrical port with a surface area the same as Slipstream’s mouth. That means it can fit into regular boxes. Stickiness outside the box is maximized by increasing pressure and stickiness inside the port is minimized by reducing velocity. The benefit of our technology is more bass output with greatly reduced port noise and distortion.
Powerful Bass - Perfectly tuned to the in-car environment. This box is optimized for a tight and precise bass response.
SPECIFICATIONS
General
Power Handling, RMS: 400W
Power Handling, Peak: 1600W
Sensitivity (2.83V/1m): 90dB
Frequency Response: 32Hz - 200Hz
Impedance: 2 ohms
Dimensions (H x W x D): 520 x 414 x 370mm (22-11/16" x 16-11/16" x 19-5/16")
Power Series Subwoofer and Enclosure Literature
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