JBL GT4-12 Manual

JBL Subwoofer GT4-12

Læs gratis den danske manual til JBL GT4-12 (4 sider) i kategorien Subwoofer. Denne vejledning er vurderet som hjælpsom af 15 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 8 anmeldelser. Har du et spørgsmål om JBL GT4-12, eller vil du spørge andre brugere om produktet?

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Automotive Subwoofers Owner’s Manual GT4-10 GT4-12 GT4-15

GT4 SERIES

™

Owner’s Manual

Einbauanleitung

Guide d’utilisation

Manual del propietario

Gebruikershandleiding

Manuale utente

Bruksanvisning

Omistajan käsikirja

Manual do utilizador

Thank you

for purchasing a

new JBL GT4 Series subwoofer.

Subwoofer installation requires

woodworking skills and some

experience disassembling and

reassembling automotive interiors. If

you lack the tools or necessary

skills, have your subwoofer installed

by an authorized JBL dealer.

Warning:

Playing loud music in

an automobile can permanently

damage your hearing as well as hin-

der 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.

GT4 Series subwoofers are opti-

mized to perform best in small,

sealed, vented and prefabricated

bandpass enclosures. While inﬁnite-

bafﬂe mounting of GT4 Series subs

is possible, power handling will be

greatly compromised because

there’s no enclosed volume of air

to prevent the speaker’s cone from

moving past its limit. For this reason,

we do not recommend inﬁnite-bafﬂe

mounting for GT4 Series sub-

woofers.

You should choose the enclosure

you will use based on the type of

music you listen to, how much

ampliﬁer power you will use for the

subwoofer and how much space

inside the vehicle you can devote

to a subwoofer enclosure.

Because a sealed enclosure

provides the most control over the

woofer’s movement, a woofer

mounted in a sealed enclosure will

handle more power than a woofer

mounted in another enclosure type.

Sealed enclosures 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

they require the smallest 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.

Vented enclosures are also well

suited to a variety of music types.

Because vented enclosures require

the volume of the enclosure and the

size of the port to have a speciﬁc

relationship with the characteristics

of the woofer, the enclosure must be

built

exactly

to the speciﬁcations

provided. While there are some

prefabricated vented boxes

available, matching a prefabricated

box to a particular woofer is difﬁcult.

If you wish to use a vented

enclosure, we strongly recommend

having your authorized JBL dealer

build it or verify that your design is

correct if you wish to build it

yourself. An optimum vented

enclosure is always larger than the

optimum sealed box for the same

woofer and will require more space

inside the vehicle.

Bandpass enclosures often provide

the most output available from

any ampliﬁer and subwoofer

combination at the expense of sonic

accuracy. If sheer SPL (sound-

pressure level) is what you desire

most, choose a bandpass enclosure.

Bandpass-enclosure design is very

tricky and the aid of a computer and

enclosure design software is

necessary. If you are an experienced

installer or have some woodworking

experience, you may wish to build

the enclosure described in the

enclosure design sheet included

with this woofer. Fortunately, there

are many prefabricated bandpass

boxes available and they are all

optimized to extract the most

output possible from any woofer.

Bandpass enclosures can be quite

large and may require a lot of space

inside your vehicle.

Choosing an Enclosure JBL GT4 Series

Produkt Specifikationer

Mærke:	JBL
Kategori:	Subwoofer
Model:	GT4-12

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