Bedienungsanleitung Klipsch P-39F (Seite 9 von 11) (Englisch)

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Loudspeaker Components -3Loudspeaker Components -2

Treble Compression Driver

Low distortion, high sensitivity, wide bandwidth and neutral tonality have been,

in this ground-breaking design, pushed beyond the standards for any previous

Klipsch driver.

Built around a .75-inch titanium dome, the tweeter makes use of two very large

high temperature N35H neodymium magnets in an unconventional congura-

tion. The titanium dome and surround are formed as one common unit.

The chamber behind the tweeter dome is resistively damped via a lled tube

to reduce reection of the back wave—and thereby the distortion that would otherwise be produced. The phase

plug that puts the dome into a compression mode also has a unique chamber within it that extends the upper

frequency limit of the driver. This proprietary technique oers numerous benets, including the elimination of

undesirable standing waves in the high pressure layer between the phase plug and horn. The result is a smooth

impedance transfer function, and a benign load on the partnering amplier. Additionally, this technique produces

smoother amplitude response through the high frequency

range. With its unique horn and phase plug, the P-39F tweeter

demands far less drive current from the amplier, so the driver

can maintain full dynamic capability at any volume level.

This driver is inherently at from 3 KHz to 30 KHz. and has an

inherent sensitivity some 10 dB greater than direct radiating

designs. Distortion is also reduced by a factor of 10 dB, against

conventional tweeters.

Crossover Network

The network is a two board construction located adjacent to the speaker’s base

plate, which conveniently positions the tri-wire input connectors at oor level.

This minimizes the length of speaker wire and produces a clean nished look.

Through very accurate driver engineering, the system oers excellent perfor-

mance without the need for corrections in the crossover network. A crossover

should provide a smooth transition from driver to driver, allowing each element

to operate at its optimum performance within its designed frequency range. This

accomplished, the network can be a straightforward design and use extremely

high quality parts without imposing unnecessary budget constraints. A simple,

elegant crossover also means the speak-

er will have a more direct and coherent

character as compared with products that must employ complex

networks to iron out their shortcomings. Polyester capacitors along

with all air-core inductors, ensure best performance and longevity.

The network produces a fourth-order electro-acoustic lter when

combined with the smooth, natural roll o of the drivers.

Cabinet

Functionally, any loudspeaker enclosure provides a mechanical placement

of each transducer, a method for suppressing acoustical radiations and a reso-

nant chamber to extend low frequency performance. The P-39F is an artistic

blend of beauty and functional performance. Its industrial design was guided

by the global consultancy of BMW Group DesignworksUSA.

Enclosure resonances can be suppressed through the geometry of the en-

closure and mass of the panels. The P-39F enclosure contains nonparallel wall

structures and thick, high mass walls. Nonparallel wall structures signicantly

decrease standing waves. Cabinet wall thick-

nesses are a minimum of 1-inch thick with an

even thicker front bae. Custom inner and

outer laminated panels sandwich a middle layer of dissimilar material designed with

a dierent mechanical impedance to ensure the cabinet does not color the sound.

To further increase enclosure stiness, four “H” braces are strategically positioned

in the enclosure to reinforce the structure, control resonance and minimize modal

standing waves. The massive front bae design allows all woofers and the mid/

high horn structure to mount ush to the exterior edge. The width of the front

bae has also been minimized to decrease the total area. A smaller front bae

directly correlates to improved o-axis performance. The overall enclosure was de-

signed to extend the low frequency response of the three woofers to 39Hz (-3dB).

This fourth-order, vented enclosure contains three custom ared, tuned ports

cleverly blended into the rear of the curved enclosure. Just below the ports, a high

mass aluminum and steel base is integrated into the bottom of the enclosure. The

base contains four adjustable oor anchors, which decouple the cabinet from the

oor by supporting the cabinet at just four points.

Tractrix® Horn Design

Horn-loaded technology is the driving force behind the remark-

ably accurate Klipsch sound. Horns oer high eciency, low dis-

tortion, controlled directivity and at frequency response, allowing

them to more closely reproduce the quality and tonal charac-

teristics of live sound. In the P-39F, the high and mid-frequency

drivers both use the latest evolution of our Tractrix® Horn design,

featuring a 90° x 60° coverage pattern and a lofted throat design

for exemplary on-axis response. These horns have been molded as

a single unit, using a proprietary, acoustically inert, carbon-infused

thermoset composite material. The high- and mid-frequency

drivers are connected to the horns via chamber-dampened phase

plugs that result in a 4:1 compression ratio, delivering remarkable

eciency with astonishingly low distortion. This arrangement

allows the P-39F to provide a unique combination of precision,

clarity and eortless power.

Bass Network

Mid and Treble Network

Klipsch P-39F Seite 9

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