JBL Grand Touring GT100D Handleiding

JBL Subwoofer Grand Touring GT100D

Lees hieronder de 📖 handleiding in het Nederlandse voor JBL Grand Touring GT100D (4 pagina's) in de categorie Subwoofer. Deze handleiding was nuttig voor 10 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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Automotive Subwoofers Owner’s Manual GT100 GT100D GT120 GT120D GT150 GT150D

GT SERIES™

Thank you for purchasing a

new JBL GT 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

hinder 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.

GT Series subwoofers are optimized

to perform best in small, sealed,

vented and prefabricated bandpass

enclosures. While inﬁnite-bafﬂe

mounting of GT 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 GT Series subwoofers.

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 GT Series

Connecting Your Subwoofer to Your Amplifier JBL GT Series

JBL GT Series subwoofers

are available in two different

conﬁgurations: as a single 4-ohm

voice coil or as dual 4-ohm voice

coils. Depending on the ampliﬁers

you are using, you may use either

single-voice coil or dual-voice coil

subwoofers in singles or multiples

to maximize the power available

from your ampliﬁers. To achieve

the maximum ampliﬁer output

possible, you should design a

speaker system that provides

the lowest impedance that

your ampliﬁer is rated to drive

safely. When designing a

subwoofer system, consider

the following rules:

1. Don’t mix different subwoofer

or enclosure types in the same

system (use all single-coil

woofers or all dual-coil woofers).

2. You may connect the coils of a

dual-voice coil woofer in series,

but we recommend that you

avoid connecting separate

woofers in series. The ampliﬁer-

damping factor (the ampliﬁer’s

ability to control the motion of

the woofer) is expressed as a

ratio of terminal impedance

(the sum of speaker impedance,

wire resistance and the D.C.

resistance of any crossover coil

connected to the woofer) to

ampliﬁer-output impedance.

Therefore, connecting separate

woofers in series reduces the

damping factor of the ampliﬁer

to a value less than 1. This will

result in poor transient response.

3. You must use both coils of a

dual-voice coil woofer connected

either in series or in parallel.

4. Most ampliﬁers deliver exactly

the same amount of power

bridged into a 4-ohm load

as they do running a 2-ohm

stereo load.

To design a subwoofer system

that maximizes available ampliﬁer

power, keep the following rules

in mind:

1. The total system impedance

of woofers in parallel can be

calculated using the formula:

Impedance = 1

1+1+1...

w1w2w3

where w is the nominal

impedance of the woofer.

2. The total system impedance

of voice coils (or woofers) in

series can be calculated using

the formula:

Impedance = w1+ w2+ w3. . .

The diagrams at right show parallel

and series speaker connections.

Figure 1. Parallel connection

POS ( + )

NEG ( – )

RED฀

STRIPE฀

POS ( + )

BLACK฀

STRIPE฀

NEG ( – )

Figure 2. Series connection

POS ( + ) NEG ( – )

RED฀

STRIPE฀

POS ( + )

BLACK฀

STRIPE฀

NEG ( – )

Product specificaties

Merk:	JBL
Categorie:	Subwoofer
Model:	Grand Touring GT100D

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