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== Data ==
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== Daten ==
{{navigation}}
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{{Navigation}}
'''General'''
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'''Allgemein'''
* Manufacturer: [[Heco]]
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* Hersteller: [[Heco]]
* Model: Concerto Grosso
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* Modell: Concerto Grosso
* Versions: First and second version (Mk II)
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* Baujahre: 1989 - 1993
* Years of manufacture: 1989 - 1993
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* Hergestellt in: Deutschland
* Manufactured in: Schmitten/Taunus, Hesse, Germany.
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* Farbe: Nußbaum, Eiche, Schwarz, Weiß, Klavierlack schwarz, Schleiflack weiß, andere gegen Aufpreis
* Colour: walnut, oak, black, white, piano lacquer black, sanding lacquer white, others against surcharge
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* Abmessungen: 415 x 1605 x 460 mm (B x H x T)  
* Dimensions: 415 x 1605 x 460 mm (W x H x D)  
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* Gewicht: ca. 60 kg/Stück
* Weight: approx. 60 kg /box
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* Neupreis ca.: 10.000,- DM (UVP Paar)
* Original price approx.: 10.000,- DM (UVP pair)
 
  
  
'''Technical Data'''
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'''Technische Daten'''
* Construction: 3-way closed, floorstanding speaker
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* Bauart: 3-Wege geschlossen Standlautsprecher
 
* Chassis:
 
* Chassis:
** Low-mid: 3x 220 mm (cone, TC 220).
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** Tiefton: 3x 220 mm
Low-midrange: 2x 170 mm (cone, TMC 170)
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** Mittelton: 2x 168 mm
** tweeter: 1x 19 mm (dome tweeter, KHC 19 M)
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** Hochton: 19 mm Kalotte
power handling (nominal/music): 250/400 Watt
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* Belastbarkeit (Nenn-/Musikb.): 250/500 Watt
efficiency: 88 dB
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* Wirkungsgrad: 88 dB
* frequency response: 16 - 35,000 Hz
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* Frequenzgang: 16 - 35.000 Hz
* crossover frequency: 180/3000 Hz
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* Übergangsbereiche: 150/2900 Hz
* Impedance: 4 Ohm
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* Impedanz: 4 Ohm
  
  
'''Special Features'''
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'''Besondere Ausstattungen'''
* hexagonal LS housing to minimize interference
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* Brillianz-Schalter zur Anpassung des Obertonpegels
* black, velvet-like flocked baffle
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* Persönliches Zertifikat für Erstkäufer
* 19 mm metal dome tweeter chassis (upper cut-off frequency >35 kHz)
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* Herstellerplakette, auf Wunsch mit Namenszug des Erstkäufers
* Low-frequency and low-midrange drivers each have a large square aluminum "frame" that is an integral part of the speaker driver design, die-cast aluminum baskets, large-diameter voice coils, and oversized magnets
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* Plakette mit Bezeichnung "Jubiläums Edition 1989" sowie "Concerto Grosso No. ..." (Fabrikationsnummer)
* "Brilliance" switch for adjusting the high-frequency level in the LS connection panel (only on the first version of the speakers)
 
* Personal certificate for first-time buyers
 
* Manufacturer's plaque, with the name of the first purchaser on request
 
Plaque with the designation "Anniversary Edition 1989" as well as "Concerto Grosso No. ..." (serial number)
 
  
== Remarks ==
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== Bemerkungen ==
* Special model for the 40th anniversary of Heco in Schmitten/Taunus, Hesse.
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* Sondermodell zum 40-jährigen Firmenjubiläum von Heco
* Limited edition of only 500 loudspeaker pairs worldwide
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* Limitierte Auflage
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Weitere Modelle der gleichen Serie:
  
== Other models of the same series: ==
 
* Heco Concerto Grosso - first version - was equipped with a low-midrange driver only.
 
* In the first version the tweeter chassis was placed at the very top of the speaker.
 
* In the subsequent and revised version of the speakers (Mk II) this is now in the manner of the d`Appolito arrangement between both cone low-mid drivers at the usual installation height.
 
  
== Pictures ==
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== Bilder ==
Due to possible copyright reasons no pictures are posted. But you can easily find them on the net...Please just goo.... yourself!
 
 
 
== Reports ==
 
* Test report in "Stereoplay" issue 10/1990 (Classification: "Absolute top class 3")
 
* Test report in "Audio" issue 03/1990 (Comparative test: "Pillar saints...")
 
  
 
== Links ==
 
== Links ==
  
[[Category:Loudspeaker]]
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[[Kategorie:Lautsprecher]]

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