JBL CX1200 Handleiding

JBL Subwoofer CX1200

Lees hieronder de 📖 handleiding in het Nederlandse voor JBL CX1200 (4 pagina's) in de categorie Subwoofer. Deze handleiding was nuttig voor 43 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

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Pagina 1/4

CX SERIES

CX1200

car audio subwoofer

owner’s manual

CHOOSING AN ENCLOSURE

THANK YOU for purchasing a

JBL® CX Series subwoofer.

Subwoofer installation requires

woodworking skills and some

experience in 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.

Listening at low levels while driving

is recommended. JBL, Inc., accepts

no liability for hearing loss, bodily

injury or property damage resulting

from use or misuse of this product.

C Series subwoofers are optimizedX

to perform best in small, sealed,

vented and prefabricated band-pass

enclosures. While inﬁnite-bafﬂe

mounting of CX Series subs is possi-

ble, 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, inﬁnite-

bafﬂe mounting is not recommended

for C Series subwoofers.X

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 when

mounted inside a vehicle, 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 at the lowest frequencies.

If you are using a small ampliﬁer,

a vented box will provide more

perceived 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, it is strongly

recommended that you have 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.

Band-pass 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

band-pass enclosure. Band-pass

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 band-pass

enclosure described in the enclosure

design sheet included with this

woofer. Fortunately, there are many

prefabricated band-pass boxes

available, and they are all optimized

to extract the most output possible

from any woofer. Band-pass

enclosures can be quite large and

may require a lot of space inside

your vehicle.

Your CX Series subwoofer has a

single 4-ohm voice coil. Be sure to

consider your ampliﬁer’s optimum

load hen subwoofer w designing a

system. Many bridgeable 2-channel

ampliﬁers are optimized to drive a

single 4-ohm woofer in bridged

mode. If you will use multiple

woofers, be sure to conﬁgure them

to extract all the power available

from your ampliﬁer. When designing

a subwoofer system, consider the

following rules:

1. Do not mix different subwoofers

or enclosure types in the same

system. Subwoofers being used in

the same enclosure or powered

by the same ampliﬁer should

be identical models. Mismatched

woofers and enclosures can

result in poor system performance.

2. Most ampliﬁers deliver exactly

the same amount of power

bridged into a 4-ohm load

as they do driving a 2-ohm

stereo load.

3. If you are designing a multiple-

woofer system, be sure to conﬁgure

the woofers so that they each

receive the same amount of

power from the ampliﬁer. Never

connect two identical woofers in

series and then connect that pair

to another woofer in parallel. If

your system will include an odd

number of woofers, be sure to

connect the woofers in all either

series or parallel, according to

the rules that follow, in order to

maximize the power available

from your ampliﬁer:

a. The total system impedance

of voice coils (or woofers) in

series can be calculated using

the formula:

Impedance = w1+ w2+ w3...

b. 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.

The diagrams at right show series

and parallel speaker connections.

Figure 1. Connecting two woofers

in series to the ampliﬁer (8 ohms)

Figure 2. Connecting two woofers in

parallel to the ampliﬁer (2 ohms)

CONNECTING YOUR SUBWOOFER TO YOUR AMPLIFIER

Red

Positive Black

Negative

Red

Positive Black

Negative

To Amp

Positive

To Amp

Negative

Connection of single woofer (4 ohms)

Red

Positive Black

Negative

Red

Positive Black

Negative

To Amp

Positive To Amp

Negative

Product specificaties

Merk:	JBL
Categorie:	Subwoofer
Model:	CX1200

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