Használati útmutató Infinity Reference 1030w

Infinity mélynyomó Reference 1030w

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Oldal 1/4

reference series

1030w,1032w

1230w,1232w

Thank you for choosing an Infinity Reference Series

subwoofer. Reference Series subwoofers are designed to suit a

broad range of mobile-audio applications and can be used in a wide

variety of enclosure types to produce extended, powerful bass in

a limited amount of vehicle space. To ensure maximum subwoofer

performance, we strongly recommend that installation be left to a

qualified professional. Although these instructions explain how to

install a Reference Series subwoofer in a general sense, they do not

show box-construction details or exact installation methods for

your particular vehicle. If you do not feel you have the necessary

experience, do not attempt the installation yourself, but instead ask

your authorized Infinity dealer about professional installation options.

Remember to keep your sales receipt with this manual in a safe place

so both are available for future reference.

instructions

®฀

- 2 -

WARNING: Playing loud music in an automobile

can permanently damage your hearing, as well as

hinder your ability to hear traffic. The maximum

volume levels achievable with Infinity speakers,

combined with high power amplification, may

exceed safe levels for extended listening. We

recommend using low volume levels when

driving. Infinity accepts no liability for hearing

loss, bodily injury or property damage as a result

of use or misuse of this product.

Y C B ROUR AR AND ASS EPRODUCTION

Depending on the size of the vehicle’s interior lis-

tening space, reproduced bass frequencies below

80Hz are boosted by nearly 12dB per octave as

frequency decreases in the car. NOTE: This effect,

known as the vehicle’s transfer function, plays

an important part in shaping the overall in-car

response and is displayed graphically along with

freespace response on the enclosed data sheet

for your Reference subwoofer.

C EHOOSING AN NCLOSURE

Reference Series subwoofers are optimized

to perform best in small sealed, vented and

prefabricated bandpass enclosures. While

infinite-baffle mounting of Reference 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

Reference 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 straight-

forward and there are many prefabricated sealed

enclosures available. Optimum sealed enclosures

are 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

Infinity 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.

- 3 -

P H LOWER ANDLING IMITATIONS

The power handling capability of any woofer is

related to both its ability to dissipate heat and the

maximum excursion limits of its cone. Once the

speaker’s voice coil moves outside the magnetic

gap, power can no longer be converted into

motion and all the amplifier’s power is converted

into heat in the voice coil. This voice coil heating

is the largest detriment to speaker longevity, so

overexcursion should be avoided. Since speaker-

cone excursion is different for each type of

enclosure, power handling is different for each

enclosure.

Sealed enclosures exert the most control over

the motion of a subwoofer because the air inside

the box acts like a spring against the motion of

the woofer cone. Larger boxes allow for more

excursion, thus providing more low-frequency

output for the amount of power used. When

placed in a sealed box much larger than the Vas

of the subwoofer, it will perform as if it were in

an infinite-baffle installation.

Vented and bandpass enclosures have the lowest

amount of excursion for the amount of sound

output. This is a result of port output reinforcing

the sound output from the woofer. The mass of

the air contained in the port provides an acoustic

load on the woofer’s cone at the tuning frequency,

and this added mass decreases woofer-cone

excursion. Vented boxes do not provide adequate

woofer control when driven below the tuned

frequency (Fb), so proper design is important. A

vented bandpass box will have the lowest overall

cone excursion, provided a subsonic filter is used.

• Voice coil overheating and burning due to

overexcursion are often caused by overdriving

an amplifier into “clipping.” A severely clipped

signal, or square wave, contains nearly twice

the power of a clean sine wave at the same level.

Bass that sounds broken up and distorted at

higher volumes is usually indicative of an

amplifier that is clipping and being asked to

deliver power beyond its ability.

• Infinite-baffle or “free air” mounting applica-

tions allow for greater cone excursion than

subwoofers mounted in an enclosure. In order

to compensate, the power handling of the

subwoofer will likely be half its rated power

in this application.

• Study the excursion curves on the enclosed

Reference Series data sheet and note the

differences for different enclosure applications.

The type and size of box used will produce

different excursion demands on the enclosed

subwoofer and, consequently, different

levels of power handling. As long as the

recommended enclosure parameters are

used, the subwoofer will perform properly

in its enclosed environment. However, any

design deviation may result in less than

optimum performance, and may also subject

the subwoofer to overexcursion (i.e., where the

voice coil leaves the gap) that can eventually

damage the speaker. For additional help with

this issue, please contact your authorized

Infinity dealer.

Termékspecifikációk

Márka:	Infinity
Kategória:	mélynyomó
Modell:	Reference 1030w

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