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Heco – tradition in loudspeakers since 1949 |
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Heco
has been committed to the philosophy of high quality music reproduction in
the home since the day the company was founded almost 6 decades ago. In
addition to the constant evolution of its already tried-and-tested
technologies, Heco has always seen itself as an innovative leader in the
development of new concepts. As a pioneer of many widely accepted design
innovations, such as dome tweeters and long throw rubber surrounds, |
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| Heco’s image was forged by several legendary loudspeaker designs. The Activ 2000K studio monitor, the first B 130 compact speaker and the physically commanding high-end speaker, Concerto Grosso each represent a milestone in loudspeaker engineering. | ||||
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All Heco loudspeakers are developed at the company’s laboratory in Pulheim near Cologne. This ultra modern facility; fully equipped with state-of-the-art measuring and acoustic simulation hardware, including the laser-supported Klippel® system, provides Heco’s experienced engineers with the perfect environment to work on continuously improving the company’s loudspeaker technology. | |||
| Kraft® paper cone |
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| The high tech cone of the Heco midrange speakers and woofers must satisfy the most extreme of acoustic demands. Music lovers often prefer the particularly natural sound produced by high-quality paper-based cones. Indeed, many of the legendary cinema and high-end loudspeakers of the past used paper cones for that very reason. | ||||
| It’s perhaps explained by the particularly good ratio between low weight and high self damping. The cones are made from the best material available, known as "Kraft paper" under the DIN 6730 specification. The standard stipulates at least 90% long-fibre “Kraft pulp” to meet the highest requirements demanded in terms of tensile strength and extreme pressure resistance (DIN 53141). Specific types of wood are pre-selected to provide this high quality pulp. Only Nordic pine timber has the required strong fibres. Other woods and cheaper waste paper are excluded because of their low strength. The pulp is then mixed with the addition of 5% German-produced wool fibres (6 - 12 mm long). During this process all of the fibres interlock to form a densely conjoined weave. This material is then pressed evenly into the conical form of the cone under high pressure. The result of this is a loudspeaker diaphragm with the desired acoustic properties for high mechanical loading | ||||
| These positive attributes mean that the Kraft
paper cone is used in practically all of Heco's loudspeakers. The long
throw surround, highly durable voice coil and linearised magnet systems,
combine to guarantee maximum dynamic contrast and precision. |
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The multi-ventilated, die-cast, aluminium
chassis have extremely well controlled resonance characteristics and as a
result provide the utmost stability. They genuinely offer the best
possible foundation upon which the powerful magnets and paper cones can
perform. However, in a purely aesthetic sense the aluminium baskets also
exude precision with their diamond polished surfaces hinting at the purity
of sound the speakers can deliver as a complete system. |
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| Nanoparticle technology |
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| If the woofer provides the power behind
convincing sound reproduction then the tweeter in a modern high end
speaker provides the speed and finesse. Its diaphragm has to move backward
and forward cleanly at frequencies in excess of 20,000 times per second.
While doing this, the dome should not deform, as this can cause audible
distortion. However, simply increasing the weight or thickness would make
it less responsive and less capable of tracking those high frequency
impulses. Engineers have been searching for the ideal material for tweeter
diaphragms since the very beginning of loudspeaker development. |
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Heco first incorporated its revolutionary
nanotechnology in the legendary Celan series. Nanoparticles are simply
material whose particle size is less than 100 nanometres. (1 nanometre is
1 billionth of a metre). The effect of such small particles is that
their properties can differ from the properties of the material itself.
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For example, metal nanoparticles can have the
properties of a fluid. The fabric dome, with its coating carbon-based
nanoparticles, has been optimised to ensure maximum stability. In contrast
to conventional dome materials such as titanium or other metals, the
nanoparticles remain flexible when applied conferring excellent damping
properties to the fabric without adding excessive mass. This results in a
linear frequency response that exceeds our auditory threshold without the
usual problem of ultrasonic dome resonance affecting the reproduction of
lower frequencies. The tweeter is acoustically brilliant, with spectacular
resolution of the finest detail. |
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The treble level can also be optionally
increased by 2 dB at the elaborately crafted rear terminal panel. The extra
large gold plated binding posts may be configured for bi-wired or bi-amped
operation and will accommodate the use of the heaviest gauge cables. The
music signal arriving here is relayed to the drive units via elegantly
assembled and individually tailored crossover filters. |
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Cabinet |
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The perfect loudspeaker cabinet should contribute the least possible
resonance. This is why Heco uses high quality MDF instead of cheaper
chipboard. An asymmetric cabinet profile also reduces unwanted internal
standing waves. All of the cabinets feature extensive multiple bracing to
reduce panel resonance. To ensure perfect and secure location on differing
floor types, all of the free-standing speakers are supplied with
height-adjustable spikes and rubber feet. |
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| Celan XT 301 | Celan XT 501 | Celan XT 701 | Celan XT 901 | |
| Principle | 2 way bass reflex bookshelf speaker | 2 1/2 way bass reflex floor standing speaker | 3 way bass reflex floor standing speaker | 3 way bass reflex floor standing speaker |
| Drivers | 1 x 1" tweeter, 1 x 6.5" woofer-midrange. | 1 x 1" tweeter, 1 x 6.5" woofer-midrange, 1 x 6.5" woofer. | 1 x 1" tweeter, 1 x 6.5" midrange, 2 x 6.5" woofers. | 1 x 1" tweeter, 1 x 6.5" midrange, 2 x 8" woofers. |
| Power handling | 100 watts (RMS) | 180 watts (RMS) | 220 watts (RMS) | 280 watts (RMS) |
| Impedance | 4 - 8 ohms | 4 - 8 ohms | 4 - 8 ohms | 4 - 8 ohms |
| Frequency Response | 30 - 52,000 Hz | 24 - 52,000 Hz | 22 - 52,000 Hz | 20 - 52,000 Hz |
| Crossover frequency | 3,400 Hz | 300 / 3,400 Hz | 280 / 3,400 Hz | 250 / 3,400 Hz |
| Sensitivity | 90 dB | 91 dB | 92 dB | 92 dB |
| Dimensions | 375 / 235 / 330mm (h / w / d) | 1055 / 240 / 368mm (h / w / d) | 1135 / 240 / 368mm (h / w / d) | 1205 / 288 / 418mm (h / w / d) |
| Downloads | Download Celan XT 301 PDF (259KB) | Download Celan XT501 PDF (233KB) | Download Celan XT701 PDF (397KB) | Download Celan XT 901 PDF (305KB) |
| Download General Celan XT brochure PDF (1400KB) | ||||
| Download General Heco brochure PDF (1050KB) | ||||
