JBL W12GTi MkII Handleiding

JBL Subwoofer W12GTi MkII

Lees hieronder de 📖 handleiding in het Nederlandse voor JBL W12GTi MkII (8 pagina's) in de categorie Subwoofer. Deze handleiding was nuttig voor 64 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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Pagina 1/8

THANK YOU

for choosing a JBL®GTi Series subwoofer.

GTi subwoofers are designed to

provide maximum sound output in a

variety of enclosure types while

maintaining the superb sound quality

associated with JBL. To ensure the best

subwoofer performance, we strongly

recommend that installation be entrusted to a

qualiﬁed professional. Although these instructions

explain how to install a GTi Series subwoofer in

a cgeneral sense, they don’t show the speciﬁ

installation procedures that may be required for

your particular vehicle. If you feel you don’t have

the necessary tools or experience, don’t attempt

the installation yourself; rather, ask your authorized

JBL dealer about professional-installation options.

GTi SERIES

W10GTi MkII

W12GTi MkII

W15GTi MkII

automotive

subwoofer

owner’s manual

INSTALLATION WARNINGS AND TIPS

WARNING

Playing loud music in an automobile can

hinder your ability to hear trafﬁc, as well

as permanently damage your hearing.

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.

YOUR CAR AND BASS

REPRODUCTION

Depending on the size of the vehicle’s

interior listening space, reproduced

frequencies below 80Hz may be boosted

by nearly 12dB per octave as frequency

decreases. This effect, commonly known

as transfer function, or cabin gain, plays

an important role in deﬁning the in-car

frequency response of your subwoofer.

It is displayed graphically, along with

freespace response, on the enclosed

data sheet for your GTi subwoofer.

POWER-HANDLING

LIMITATIONS

The power-handling capacity of any

subwoofer is related to the excursion

limit of its suspension and its ability to

dissipate heat. A speaker reaches its

excursion-limited power-handling

capacity when its suspension is

stretched to its limit. The excursion

curve shown on the Enclosure Design

Sheet (included with your woofer)

displays cone excursion at the input

power level required to drive the woofer

to maximum linear excursion (Xmax).

The input power shown may be used

as instantaneous input only.

Thermal power handling is determined

by the amount of heat that may be

dissipated by the driver’s voice coil.

The power-handling rating assigned

to your GTi Series subwoofer is its

thermal-power-handling rating. This

rating assumes a clean (unclipped)

signal. A clipped waveform has much

higher average power, due to the longer

duty cycle at the top and bottom of the

waveform; it will heat the woofer’s voice

coil faster than a clean signal and may

damage the voice coil. A square wave

has a 100% duty cycle and is extremely

dangerous for any speaker. Audible

distortion in the output of your woofer

is an indication that your ampliﬁer may

be clipping, which could damage your

speakers over time.

GTi Series subwoofers are optimized to

perform best in small sealed, vented and

bandpass enclosures. While inﬁnite-

bafﬂe mounting of GTi Series subs is

possible, power handling will be

compromised since there will be no

enclosed volume of air to help the

speaker’s suspension control the motion

of the woofer’s cone. For this reason,

we do not recommend inﬁnite-bafﬂe

mounting for high-power applications.

You should choose the enclosure you’ll

use based on the type of music you

listen to, how much ampliﬁer power

you’ll use to drive the subwoofer, and

how much space inside the vehicle you

can devote to a subwoofer enclosure.

If you’ll be using your GTi Series

subwoofer for SPL competition, please

see the document titled “GTi as SPL

Competition Subwoofers” (included

with your woofer).

Because a sealed enclosure provides

the most control over the woofer’s

movement, a woofer mounted in a

sealed enclosure will handle more

power at low frequencies 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. An optimum sealed

enclosure is always smaller than other

types of enclosures that are optimized

for a particular speaker, so they require

the least space inside the vehicle.

Vented enclosures provide better

efﬁciency in the 40Hz – 60Hz range,

but this efﬁciency comes at the expense

of sound output in the lowest octave

(below 40Hz) and at the expense of

some control and power handling below

box tuning. 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. 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 can provide

the greatest 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 vented

or bandpass enclosure. Bandpass

enclosure design is very tricky and the

aid of a computer and enclosure design

software is necessary if you wish to

design the enclosure yourself. Like a

vented enclosure, a bandpass enclosure

must be built exactly to the speciﬁcations

provided. Bandpass enclosures can be

quite large and may require a lot of space

inside your vehicle.

CHOOSING AN ENCLOSURE

Product specificaties

Merk:	JBL
Categorie:	Subwoofer
Model:	W12GTi MkII

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