Choosing an Enclosure JBL GTO Series
Thank you for purchasing a GTO Series subwoofers are Sealed-enclosure construction recommend having your authorized
new JBL GTO Series subwoofer.optimized to perform best in small,is straightforward and there areJBL dealer build it or verify that
Subwoofer installation requiressealed, vented and prefabricatedmany prefabricated sealed your design is correct if you wish
woodworking skills and some bandpass enclosures. While enclosures available. An optimumto build it yourself. An optimum
experience disassembling andinŢnite-baf�e mounting of sealed enclosure is always smallervented enclosure is always larger
reassembling automotive interiors.GTO Series subs is possible, than other types of enclosures than the optimum sealed box for
If you lack the tools or necessarypower handling will be greatly optimized for a particular speaker,the same woofer and will require
skills, have your subwoofer installedcompromised because thereOs so they require the smallest amountmore space inside the vehicle.
by an authorized JBL dealer. no enclosed volume of air to of space inside the vehicle.
prevent the speakerOs cone fromBandpass enclosures often
Warning: Playing loud music in moving past its limit. For this Vented enclosures provide better provide the most output available
an automobile can permanentlyreason, we do not recommend efŢciency in the 40Hz�50Hz rangefrom any ampliŢer and subwoofer
damage your hearing as well asinŢnite-baf�e mounting for but this efŢciency comes at thecombination at the expense of
hinder your ability to hear trafŢc.GTO Series subwoofers.expense of sound in the lowestsonic accuracy. If sheer SPL
We recommend listening at low octave (below 40Hz) and at the(sound-pressure level) is what you
levels while driving. JBL accepts noYou should choose the enclosureexpense of some control and powerdesire most, choose a bandpass
liability for hearing loss, bodily injuryyou will use based on the type ofhandling. If you are using a smallenclosure. Bandpass-enclosure
or property damage resulting frommusic you listen to, how muchampliŢer, a vented box will providedesign is very tricky and the aid
use or misuse of this product.ampliŢer power you will use for themore bass output from less power.of a computer and enclosure
subwoofer and how much spaceVented enclosures are also welldesign software is necessary. If
inside the vehicle you can devote suited to a variety of music types.you are an experienced installer
to a subwoofer enclosure.Because vented enclosures requireor have some woodworking
the volume of the enclosure andexperience, you may wish to build
Because a sealed enclosure the size of the port to have a the enclosure described in the
provides the most control over thespeciŢc relationship with the enclosure design sheet included
wooferOs movement, a woofercharacteristics of the woofer, the with this woofer. Fortunately, there
mounted in a sealed enclosure willenclosure must be built exactly toare many prefabricated bandpass
handle more power than a wooferthe speciŢcations provided. Whileboxes available and they are all
mounted in another enclosure type.there are some prefabricated optimized to extract the most
Sealed enclosures provide morevented boxes available, matching aoutput possible from any woofer.
accurate sonic reproduction thanprefabricated box to a particularBandpass enclosures can be quite
other enclosure types, so they arewoofer is difŢcult. If you wish to uselarge and may require a lot of space
well suited to all types of music.a vented enclosure, we stronglyinside your vehicle.
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