Bedienungsanleitung JL Audio 12W7AE (Seite 2 von 16) (Englisch)

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YELLOW OPTIMUM:

This zone represents the best balance

between long-term reliability, high

output and low distortion performance.

In this zone, you will be taking full

advantage of the woofer's optimum,

low-distortion performance range

without undue risk of failure.

RED MAXIMUM:

In this zone, low-distortion output and

long-term reliability will be compromised

(especially by an aggressive user). Slightly

more SPL will be gained by pushing the

power into this zone, but typically not

more than 2dB, compared to the yellow

zone. The closer you are to the black

zone, the higher the likelihood of driver

failure. Operate with caution.

BLACK WARRANTY VOID:

We do not recommend operating

woofers at this level of power. In this

zone, there is a very high probability that

the driver will fail due to excessive heat

and/or mechanical stress.

Subwoofer drivers operated at

these levels of power are NOT covered

under warranty.

GREEN MINIMUM:

From a reliability standpoint, this zone

represents a very comfortable operating

power range for each driver. This level

of power will not stress the woofer but

will not extract all of its performance

potential, either.

Use of less than the minimum power

level will not damage the woofer, but may

result in unsatisfactory performance.

An Introduction

When designing systems with W7AE drivers, it is very important to achieve a good power match between the subwoofer amplifier and the subwoofer driver's capabilities. The power levels listed in the

above chart represent continuous (RMS) amplifier power per woofer and assume that the user will regularly make full use of that power

without drastically overdriving (clipping) the amplifier(s). Make

sure you factor system impedance and the total number of subwoofers into your calculations. Adhering to these power recommendations will result in systems that are both reliable and enjoyable.

RECOMMENDED CONTINUOUS RMS POWER RANGE FOR ONE SUBWOOFER DRIVER:

Please consult the input sensitivity setting information on page 14 of this book.

250W 500W 1000W 2000W 4000W125W

13W7AE

12W7AE

10W7AE

8W7AE

Thank you for purchasing a JLAudio W7AE subwoofer driver. The

W7AE embodies JLAudio’s commitment to pushing the envelope

of speaker technology, with eight patented technologies, a design

patent and a completely unique set of component parts. Each

W7AE model has been meticulously engineered to reproduce

sub-bass with extreme fidelity at any volume level, provided it

is installed and tuned properly. Please review the information in

this document carefully so as to maximize your enjoyment of the

W7AE’s capabilities.

Two enclosure recommendations are listed for each model,

one sealed and one ported. In most cases, the sealed enclosure

design will give you the best overall sound quality and take up the

least space in your vehicle. The ported enclosure design will deliver

additional output over the sealed enclosure (about 3 - 4 dB more)

and will also maintain excellent sound quality, but it will require

significantly more space to install. The recommended ported

enclosure is not designed for peaky “competition SPL” performance,

but rather for music listening. It will be very loud and sound

extremely good when set up properly.

In addition to the enclosure recommendations, we also

provide recommended amplifier settings for JL Audio amplifiers

commonly used with W7AE’s. Some of this information is also

applicable with other brands of amplifiers (like crossover points

and slopes), some is not (like the voltage levels specified for input

sensitivity settings). Please note that W7AE’s rarely require any

equalization to produce smooth frequency response. If you have

an equalizer in your system (or one is included in your head unit

or amplifier), defeat all bands below 125 Hz before dialing in your

new system settings.

For optimum sub-bass performance, the amplifier input

sensitivity must be adjusted to avoid excessive distortion (clipping)

of the amplifier output. Overly high input sensitivity settings

result in no additional clean output but will result in poor sound

quality and reduced speaker reliability. With W7AE subwoofers,

a clipped amplifier output may manifest itself audibly as a low-

level “mechanical” sound coming from the speakers. Proper input

sensitivity setting will avoid this problem.

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