JBL MS-12SD4 Handleiding

JBL Subwoofer MS-12SD4

Lees hieronder de 📖 handleiding in het Nederlandse voor JBL MS-12SD4 (12 pagina's) in de categorie Subwoofer. Deze handleiding was nuttig voor 59 personen en werd door 2 gebruikers gemiddeld met 4.5 sterren beoordeeld

Pagina 1/12

OWNER’S MANUAL

MS-10SD2

MS-10SD4

MS-12SD2

MS-12SD4

MS-15SD2

MS SERIES

dual voice-coil subwoofer



for purchasing an MS 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.

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. We accept no liability

for hearing loss, bodily injury or property damage resulting from use or

misuse of this product.

CHOOSING AN ENCLOSURE

MS Series subwoofers are optimized to perform best in small, sealed

and vented enclosures. While infinite-baffle mounting of MS subwoofers

is possible, power handling will be greatly compromised because there

will be 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 MS 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 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, 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.

CONNECTING YOUR SUBWOOFER TO YOUR

AMPLIFIER

JBL MS Series subwoofers are available in two different congurations:

a dual two-ohm voice coil or dual four-ohm voice coils. You may

use MS subwoofers in singles or multiples to maximize the power

available from your amplifier(s). To achieve the maximum amplifier

output possible, you should design a speaker system that provides the

lowest impedance that your amplifier will drive safely. When designing a

subwoofer system, consider the following rules:

Do not mix different subwoofers or enclosure types in the same 1.

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 performance from your

subwoofer system.



English

You must use both coils of a dual voice-coil woofer connected 2.

either in series or in parallel.

Most amplifiers deliver exactly the same amount of power bridged 3.

into a 4-ohm load as they do running a 2-ohm stereo load.

To design a subwoofer system that maximizes available amplier power,

keep the following rules in mind:

The total system impedance of woofers in parallel can be calculated 1.

using this formula:

Impedance = 1

...

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 this formula:

Impedance = w

1 + w

2 + w3 ...

The diagrams below show parallel and series speaker connections.

 

SUGGESTED ENCLOSURES

  

Internal Volume Internal Volume Qty. Duct(s) Diameter x Length

 0.78 ft3 (22L) 1.13 ft3 (32L) 1 2.95 in x 9.84 in (7.5cm x 25cm)

 0.78 ft3 (22L) 1.13 ft3 (32L) 1 2.95 in x 9.84 in (7.5cm x 25cm)

 0.95 ft3 (27L) 1.7 ft3 (48L) 1 3.94 in x 8.66 in (10cm x 22cm)

 0.95 ft3 (27L) 1.7 ft3 (48L) 1 3.94 in x 8.66 in (10cm x 22cm)

 1.27 ft3 (36L) 2.12 ft3 (60L) 2 3.94 in x 14.96 in (10cm x 38cm)

– The suggested enclosure volumes are related to only one speaker, including woofer and duct(s)

displaced volume.

– For enclosures with more than one speaker, it is necessary to multiply the suggested volume and

duct(s) by the quantity of speakers.

ENCLOSURES INTERNAL VOLUME

CALCULATION INSTRUCTIONS

 

Internal Volume = A x B x C

1000 A x B x

(

C + D

)

1000

Internal Volume =

– A , B and C are internal dimensio ns.

Product specificaties

Merk:	JBL
Categorie:	Subwoofer
Model:	MS-12SD4
Breedte:	- mm
Diepte:	- mm
Hoogte:	- mm
Gemiddeld vermogen subwoofer:	450 W
Aantal drivers:	1
Diameter driver subwoofer (imperiaal):	12 "
Subwoofertype:	Passieve subwoofer
Frequentiebereik subwoofer:	30 - 400 Hz
Spreekspoel types:	Dual
Type product:	Subwoofer-stuurprogramma
Diameter driver subwoofer:	300 mm
Subwoofer maximale vermogen:	1800 W