Infinity 7 Kappa loudspeakers

 

A New Generation Of High Accuracy Technology

The Kappa woofer has a highly innovative cone that is injection molded from a mixture of graphite fiber and polypropylene. The advantages of these two materials - graphite for its stiffness and polypropylene for its inertness - compliment each other. During the high pressure injection molding process, graphite fibres are forced into the polypropylene in a radial pattern. This composite structure exhibits extreme stiffness and pistonic operation up to nearly 1 kHz, low mass, fast acceleration and very high self damping. The result is taut, precise bass reproduction at all volume levels, with sufficient bandwidth to permit very smooth transitions to midrange drivers. We use the same composite cone (and the rigid cast frame of the heavier 12" Kappa woofer) in our no-compromise Infinity Reference Standard, Series V and we believe that it is the most accurate cone made - at any price.

Our revolutionary Polygraph k superwoofer handles the critical mid-bass and lower midrange frequencies. The spectrum of 80 Hz to 800 Hz where half of all musical energy appears and where most speakers are at their weakest. This new 5" dome-shaped driver operates throughout this range and delivers a seamless, coherent performance. Allowing voices and instrumental textures to emerge with an airiness and clarity that is musically convincing.

Diaphragm construction on the Polygraph k is more akin to that of a grand prix car than a loudspeaker. It is a composite structure, made from unusually thin polypropylene supported by an extremely stiff lattice of graphite fiber. These two materials provide an unprecedented combination of stiffness, low mass and damping. The Polygraph's transient response and resistance to breakup rivals that of the most expensive planar drivers. Its power handling and dynamic range surpass them.

The equally important upper midrange frequencies are covered by another new dome design. Our 3" Polydome k uses an edgewound voice coil for high electrical efficiency and a new formulation of soft polypropylene for a combination of excellent self damping and speed. Our research paid off in a driver of exceptionally low coloration. This dome mates beautifully with the potent Polygraph k and, because of its size, can go low enough to meet the 10" and 12" kappa woofers in our more affordable 3-way systems.

The higher frequencies still belong to our famous EMIT electromagnetic induction planar tweeters. Now, however, there are two of them, and both feature evolutionary improvements first used in our IRS, Series V.

 

Compared to its predecessor, the Kappa EMIT has a kapton diaphragm of approximately half the mass, a lighter, thinner aluminum trace (analogous to the voice coil on conventional cones and domes) and new ultra-linear, ultrahigh gauss rare neodymium magnets. High frequency response has been extended to 44 kHz, and though you won't hear fundamentals up there, you'll find that kind of bandwidth makes a difference in reproducing transients and instrumental attacks. In our more expensive 8 k and 9 k loudspeakers two of these EMIT k's are used - one in front and one in the rear - for true dipolar dispersion and superior imaging.

 

Reference Standard 7 Kappa

The 7-Kappa is a stylish 12" three-way floor standing loudspeaker system. It's cast frame woofer utilizes our graphite fiber reinforced polypropylene cone coupled directly to the superb Plydome k, a 3" soft polypropylene dome. And improved EMIT k tweeter uses the same light diaphragm and neodymium magnets as our other Kappa speakers. These drivers are housed in a handsome cabinet which, with its rounded front and rear vertical edges, looks right at home with the finest furnishings. This combination of larger woofer and greater cabinet volume provides deeper, more powerful bass than the 6 k, along with greater power handling and dynamic range. The enclosures modest footprint contributes to ease of placement - even in confined living quarters.

 

Specifications

Frequency Response:  37 Hz - 45,000 Hz +3 dB

Crossover Frequencies:  800 Hz, 4500 Hz

Power Rating:  40 - 200 watts RMS

Sensitivity:  88 dB at 1 watt/1 meter

Nominal Impedance:  4 to 6 Ω

Drivers

1 x EMIT k tweeter

1 x 3" Edgewound Voice coil Polydome k midrange

1 x 12" Graphite/Polypropylene woofer

Dimensions (H x W x D):  37" x 17" x 12"

Weight:  31,4 kg (shipping)

Infinity 6 Kappa loudspeakers

Kappa is a concept and group of products. Five unique drivers and four loudspeakers that incorporate them. Kappa speakers differ radically from conventional speakers in appearance, underlying design philosophy , and certainly in performance.

Woofer.

A newly developed composite polypropylene/graphite fiber injection molded cone enables Kappa woofers to produce powerful, taut bass.

Mid-range

Utilizing a 3" edgewound voice coil and a powerful magnetic structure, the new Polydome k midrange driver delivers low distortion, exceptional linearuty and fast transient response.

Tweeters

New neodymium magnets and a special ultralight diaphragm extend the EMIT k tweeter's bandwith to beyond 44 kHz. The result is incredibly fast transients within the audible frequency ranhe.

Network.

Kappa crossovers are computer designed, then carefully handtuned during critical listening sessions. Components are chosen for their electrical excellence and musicality.

 

Reference Standard 6 Kappa

The 6 Kappa is a monitor-size loudspeaker that performs properly on the bookshelf or, with its optional pedestal, the floor. Low frequencies are reproduced by our 10" graphite/polypropylene woofer, mids are handled by our new 3" Polydome k and high frequencies are handled by our improved EMIT k. in virtually all aspects of performance, aside from extreme bass extension, the 6 k surpasses European and American monitor systems costing up to three times the price. The linearity of its Kappa drivers and their integration - through a high quality computer optimized crossover network - provide for notably higher resolution than is possible with conventional drivers. The 6 k is a fitting complement to the best electronics and signal sources and forms the foundation of an affordable perfectionist audio system.

 

Specifications

Frequency Response:  39 Hz - 45,000 Hz +3 dB

Crossover Frequencies:  800 Hz, 4500 Hz

Power Rating:  30 - 150 watts RMS

Sensitivity:  88 dB at 1 watt/1 meter

Nominal Impedance:  4 to 6 Ω

Drivers

1 x EMIT k tweeter

1 x 3" Edgewound Voice coil Polydome k midrange

1 x 10" Graphite/Polypropylene woofer

Dimensions (H x W x D):  25" x 15" x 10,5"

Infinity Quantum Jr

Infinity Quantum Jr

The Monitor JR. speaker by Infinity was called "our Little concert hall" because of its phenomenal realism. And there was standing room, only because of its tremendous popularity.

We've replaced it. With an aven more advanced speaker of the same size and about the same price. Its name is Quantum Jr.

You see, Infinity has improved on the  previous best-seller by incorporating the superlative EMIT Tweeter, first used in our top-of-the-industry Quantum Line Source. A further improvement is a new woofer that combines excellent transient response, deep bass range, and high power-output capacity. The result sounds more than ever like the live performance.

Now you cann have true audiophile musical reproduction from a three-way speaker in a small enclosure, at a price that represents exceptional value.

Specifications

Nominal Impedance:  4 Ω

Power Rating:  20 - 200 watts RMS

Sensitivity:  89 dB at 1 watt,, 1 m

Crossover Frequencies:  600 Hz and 4 kHz

Frequency Response:  40 Hz - 32,000 Hz ±3 dB

Horizontal Dispersion:  -2 dB at 60° , left or right (20 kHz)

Driver;

1 x EMIT tweeter

1 x 1,5" dome midrange

1 x 12" Q-woofer

Dimensions (H x W x D):  25" x 14,5" x 12"


I like

Infinity Reference Studio Monitor

 The Reference Standard comes into the studio.

Where uncompromising accuracy, high efficiency, and heavy power-handling ability are all required - there Infinity's rugged Reference Studio Monitor belongs.

This speaker is efficient enough to deliver thunderrous volume on as little as 35 watts - and able to handle power in excess of 250 watts.

Other monitor speakers certainly have efficiency and power-handling capability. But we believe none also has the reference Studio Monitor's sweetnes in the upper register, oppen detail in the midrange, and definition in the mid and low bass.

Not the optional matching pedestal, may also be  used with the Reference Standard 1,5 ; Reference Studio Monitor ,RSb, RSA or Rseto raise the speaker to the proper height and angle for optimum sound dispersion.

Specifications

Frequency Response:  43 to 32,000 Hz ±3db

Suggested Power Amplifiers:  35 to 250 watts per channel RMS

Drivers (each channel): 

One 12-inch (30 cm) RS woofer with polypropylene cone.

One 5-inch (12 cm) midrange driver with polypropylene cone.

One EMIT tweeter, rotatable.

Crossover Frequencies:  500 Hz and 5,000 Hz

Dimensions (H x W x D):  670 x 380 x 250 mm (26½" x 15" x 10")

Finish:  Oak veneer over high-density particle board.

Infinity RS II

 Infinity Reference Standard II - A less expensive version of the worlds most accurate speaker.

Since its inception, Infinity has been setting new standards of accuracy in music reproduction. Its speakers are designed to, as closely as possible, translate acoustic theory into practical reality.

There are two theoretically ideal ways of propagating sound in a room environment; the line source and the point source.

The Infinity Reference Standard, introduced in 1980 as a nocompromise state-of-the-art. Speaker system, approximates line source propagation, in which the sound source must be infinitely long vertically.

The vertical dimensions of the Infinity RS is nearly equal to the vetical dimension of most rooms, approximating ideal line source conditions in a closed environment. Horizontally, the driver is so narrow at all frequencies in the audio band that its audio dispersion is essentially complete.

Now we are pleased to announce the Reference Standard II, a practical simulation of point source theory.

A true point source would be an infinitely small, pulsating sphere, with all frequencies radiating equally in all directions.

In the Reference Standard II, point source technology is simulated by decreasing the size of the radiating area as the frequency increases.  Thus, the source is always small compared to the wave length of the sound being radiated.

The Referency Standard II inherits some of its design configuration and technologies directly from the Infinity Reference Standard. However, its price, unlike the the $20,000 IRS, is affordable to most serious audiophiles.

Its diffraction wing design and dipole drivers in the high and mid-frequencies create an arresting depth, breadth and clarity of musical image.  Its dual 10" woofers in a new Infinity/Watkins woofer/subwoofer configuration are in their own enclosures, and incorporate rool-offs at different crossover points. This yeilds deep strong bass, as well as exceptional tautness and clarity in the midbass.

 Diffraction wings and what they do.

The elegant curve of the reference Standard II enclosure wings is precisely calculated to minimize the distortion caused by diffraction.

In an ordinary speaker sound waves propegated by the drivers bounce off the front of the enclosure. These diffracted waves interfere with the principal wave, causing cancellation "dead spots" in the listening room, and out-of-phase distortion.

As a result, the music is blurred and sounds muffled; the stereo image is cinfused, inconsistent, or absent altogether, depending upon one's listening position in the room.

As with the $20,000 Infinity Reference Standard, the Reference Standard II diffrection wings are mathetically curved so that the diffraction effect is minimized. The small portion of the sound waves which is diffracted  is propagated to the sides and back. Cancellation "dead spots" and out-of-phase phenomena are effectively eliminated from the listening area.

This creates an illusion of the three dimensional imaging so accurate the listener can "place" every instrument in the orchestra; front to rear, as well as left to right.

For example, Pink Floyd's "The Wall" side 1, reveals a panorama of sound with breathtaking impact.  As the distant helicopter approaches and lands, it seems to travel through the top to the bottom of the speaker; you almost feel the wind from the chopper blades as it taxis past. The children's voices, their English accents clearly discernable as they sing. Are heard, not on a single plane, but in layer after layer of sound, clearly defined in space.

 The Two Woofers

Two ten-inch woofers in the RS II are identical - yet they are used independently. Although they both operate in the very lowest bass ranges, one rolls off at 60 Hz, the other at 125 Hz.

This is a new embodiment of the Infinity/Watkins principle; instead of two voice coils on one woofer, there are two woofers operating together at certain frequencies, yet rolling off independently.

The two woofers - each in its own enclosure - are mounted in a special master enclosure of oak vener, suspended within the diffraction wing and stepped forward to assure precise phase relationship with the other drivers.

The Three Midrange Drivers.

The three five-inch midrange drivers are dipoled by leaving their backs open, allowing the back wave to complete the point source radiation pattern.

Employing a unique arrangement, the midranges crossover at two different frequencies. The upper most and the lowest operate up to 1500 Hz, while the central midrange works up to 3 kHz.

From a technical point of view, this produces distinct advantages.

Better midrange coupling is achieved in the critical lower midrange area. And, by spreading out the crossover frequencies, response is made uniform and the directivity index is made to correspond to point source radiation within the range of utilization of each separate driver.

 Polypropylene cones; the advantages are obvious.

Although much has been written sbout the many advantages of polypropylene over paper cones, and cones of exotic materials, its advantages are clearly evident upon first hearing.

This extremely light, yet very stiff material with no intrinsic sound of its own, responds uniformly and instantly to the input signal, producing music that is astonishingly clear and accurate.

It is impervious to heat, moisture and the wear and tear that shortens the life of traditional cone materials.

Polypropylene cones are used in the woofer and midrange drivers of the Reference Standars II, as they are throughout the Infinity RS series speakers.

Present Perfect.Future Positive.

Our design objective for the reference Standard II was to utilize audio technology developed for the massive Infinity Reference Standard to create a much smaller, much less expensive speaker system -  a system more technologycally advanced, more aesthetically appealing in its price range than any other speaker available.

We hope you find the RS II a profitable investment in pleasure; and an enhancement to the quality of your life - for a good many years to come.

 The Two EMIT tweeters.

The EMIT electromagnetic induction tweeters found in the RS II are considered the state-of-the-art. Tweeter by critics the world over.

EMIT, with its powerful samarium-cobalt magnets and an almost zeromas etched planar diaphragm, is unique in its ability to combine exceptional powerhandling capability with extreme delicacy - through a superauditory 32 kHz.

The Reference Standard II has two EMIT tweeters configured in a dipole pattern; one firing forward and the other facing the rear.

It should be noted that EMIT tweeters are used, in varying configurations, in every Infinity Reference Standard  and RS series speaker.

Specifications

Frequency Response:  36 -32,000 Hz ±2 dB

Sugested for use with Amplifier  of:  35 - 250 watts per channel RMS

Drivers (each channel):

Woofers:  Two 10" (25 cm) with polypropylene cones in Infinity/Watkins dual-drive configuration.

Midrange:  Three 5" dipole drivers with polypropylene cones in dipole configuration.

Tweeters:  Two EMIT, one of them facing rearward

Crossover Frequencies:  60, 125, 1500 and 3000 Hz

Nominal Impedance: 4 ohms

Dimensions (W x H x D):  580 x 1220 x 460 mm (22 ¾" x 48" x 18")

Weight (Packed):  45,5 kg (100 lbs)

Finish:  Solid oak diffractions wings. Oak veneer over high-density particle board woofer enclosure

Warranty: 5 years