Infinity Kappa Perfect 10VQ Manual

Infinity Subwoofer Kappa Perfect 10VQ

Læs gratis den danske manual til Infinity Kappa Perfect 10VQ (8 sider) i kategorien Subwoofer. Denne vejledning er vurderet som hjælpsom af 13 personer og har en gennemsnitlig bedømmelse på 4.3 stjerner ud af 7 anmeldelser. Har du et spørgsmål om Infinity Kappa Perfect 10VQ, eller vil du spørge andre brugere om produktet?

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Side 1/8

subwoofer instructions

Thank you for purchasing an Infinity Kappa Perfect VQ

subwoofer. Kappa Perfect VQ subwoofers are engineered to

provide unparalleled audio reproduction at even the highest

output levels, and are constructed using state-of-the-art materials

for unequalled performance and longevity. To ensure the best

subwoofer performance possible, we recommend that a qualified

professional perform the installation. Although these instructions

provide enclosure specifications and explain how to install a

Kappa Perfect VQ subwoofer in a general sense, they do not show

specific box-construction details or vehicle-specific installation

methods. If you don’t feel you have the knowledge, experience

or necessary skills to install the subwoofer yourself, ask your

authorized Infinity dealer about professional installation options.

Remember to keep your sales receipt and this manual in a safe

place so they’re available for future reference.

INTRODUCTION

Kappa Perfect VQ Series subwoofers

are unique because they provide

variable Q. Q adjustments may

allow the subwoofer to be optimized

for a particular enclosure or applica-

tion and may provide the user with

optimum performance for several

applications in a single enclosure.

The frequency response of every

speaker includes three distinct regions

characterized by flat amplitude (pass-

band), high-frequency attenuation

(stopband-high) or low-frequency

attenuation (stopband-low) (see

Figure 1). Midrange speakers and, to

a lesser extent, tweeters are used to

reproduce frequencies in the region

where they exhibit flat frequency

response. Subwoofers, on the other

hand, are used in a region of low-

frequency attenuation, but those low

frequencies are what we want the

subwoofer to reproduce. Subwoofer

system design is almost entirely

an effort to extend the region of

flat response to the lowest possible

frequency or to shape the frequency

response in the band of reproduced

frequencies. Qes and, consequently,

Qts are the parameters that best

describe the behavior of a subwoofer

in the range of frequencies it is most

often used to reproduce.

A FEW WORDS ABOUT

POWER HANDLING

The power-handling capability of any

woofer is related both to its ability to

dissipate heat and to the maximum

excursion limits of its suspension.

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.

Voice-coil heating is the greatest

detriment to speaker longevity, so

overexcursion should be avoided.

Since excursion characteristics are

very different for each type of

enclosure, power handling will be

different for each enclosure type.

Sealed enclosures exert the most

control over the motion of the sub-

woofer at the very lowest frequencies

because the air inside the box acts

as a spring, opposing the motion

of the woofer’s cone. Larger boxes

allow more excursion, providing more

low-frequency output than the same

woofer in a smaller box, for any input

power level. When placed in a sealed

box much larger than the equivalent

compliance (Vas) of the subwoofer,

it will perform as if it were in an

infinite-baffle application, with the

attendant lower excursion-limited

power handling.

Vented and bandpass enclosures allow

the least excursion for the amount

of sound output (near and above the

resonance frequency of the enclosure).

The mass of air contained in the

port provides an acoustic load to the

woofer’s cone at the tuning frequency,

and this added mass decreases

excursion so that the subwoofer’s

motor is, essentially, coupled to the

air in the port. Vented boxes do not

provide adequate control below the

frequency at which the box is tuned,

so proper design and a subsonic filter

are important. A vented bandpass box

will allow the least cone excursion,

provided a subsonic filter is used.

Infinite-baffle, or “free air,” mounting

allows for greater excursion than does

mounting subwoofers in enclosures.

The power handling of a subwoofer

mounted in an infinite baffle will be

reduced by nearly half its rated-power-

handling spec.

Voice-coil overheating and burning

have only one cause – exposure to too

much power for too long. An amplifier

driven into severe clipping or square-

wave can output much more average

power than the average power of a

clean sine wave of the same level.

Audible distortion in the sound is a

clear indication of amplifier clipping

and should serve as an indication that

your speakers may be in danger of

being damaged.

VARIABLE Q (PATENT PENDING)

30 10050

Hz 200 1K500 2K 5K 10K

SPL vs Frequen cy

d B S P L D e g 1 8 0

1 5 0

1 2 0

9 0

6 0

3 0

– 6 0

– 3 0

– 9 0

– 1 2 0

– 1 5 0

– 1 8 0

– 1 0

– 1 5

– 2 0

– 2 5

– 3 0

– 3 5

– 4 0

– 5 0

– 4 5

– 5 5

– 6 0

– 6 5

– 7 0

LOW-FREQUENCY฀

ATTENUATION HIGH-฀

FREQUENCY฀

ATTENUATION

FLAT AMPLITUDE

Figure 1. Frequency response of a speaker.

Produkt Specifikationer

Mærke:	Infinity
Kategori:	Subwoofer
Model:	Kappa Perfect 10VQ

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