Difference between revisions of "Scan-Dyna A-25"
| Line 82: | Line 82: | ||
== Berichte == | == Berichte == | ||
| − | * Aperiodic | + | * Aperiodic: Manufacturer's Comment (aus Artikel von J. Gordon Holt, 1. Dez. 1969; über die erste A25 Version) |
| − | + | * The aperiodic design is not a bass-reflex approach, since there is no acoustic output through the port. The characteristics of the "plug" in the port are quite critical, necessitating individual adjustment of each system. This added acoustical impedance damps the woofer, improving its response to transient signals. Examination of the woofer cone motion shows that, with this aperiodic design (on which patents are pending), the cone follows the input signal all the way down to DC with far greater precision than is the case with either bass-reflex or acoustic-suspension designs. Dynaco | |
| − | The aperiodic design is not a bass-reflex approach, since there is no acoustic output through the port. The characteristics of the "plug" in the port are quite critical, necessitating individual adjustment of each system. This added acoustical impedance damps the woofer, improving its response to transient signals. Examination of the woofer cone motion shows that, with this aperiodic design (on which patents are pending), the cone follows the input signal all the way down to DC with far greater precision than is the case with either bass-reflex or acoustic-suspension designs. Dynaco | ||
Revision as of 10:53, 4 January 2021
Daten
Allgemein
- Hersteller: Scan-Dyna
- Modell: A-25
- Typ: Lautsprecher
- Baujahre: 1968 - 1974
- Hergestellt in: Dänemark
- Farbe: Nussbaum
- Abmessungen: 290 x 500 x 250 mm (BxHxT)
- Gewicht: 9 kg
- Neupreis ca.: 345 DM
Technische Daten:
- Bauart: 2-Wege aperiodisch (Halboffen, "Acoustic Resistor" / "Resistive Port/Vent" wie Dynaudio Variovent)
- Chassis:
- Tieftöner: 250 mm Konus, SEAS H-336 (laut Sicke) / Typ 25TV-EM (laut Aufkleber), 4 Ohm
- Mitteltöner:
- Hochtöner: 40 mm Kalotte, SEAS H-087, 6 Ohm (gemessen: 4,8 Ohm)
- Belastbarkeit (Nenn-/Musikb.): 35 W / 90 W
- Wirkungsgrad: 88 dB / W / m
- Frequenzgang: 32 - 20'000 Hz
- Übergangsbereiche: 1'500 Hz
- Impedanz: 4 Ohm
Besondere Ausstattungen
- Aperiodisches Dämpfungssystem
- Abnehmbare Front
- Höheneinstellung von 5 Positionen zur Hörraumanpassung mit den folgenden Merkmalen:
- 1) Schwache Anhebung
- 2) Linearer Frequenzgang
- 3) Schwache Dämpfung - Als normal bezeichnet (wahrscheinlich typischer Hörraum gemeint)
- 4) Etwas stärkere Dämpfung für "harte" Räume
- 5) Starke Dämpfung
Bemerkungen
- Weitere Modelle der gleichen Serie:
- Receiver:
- Scan-Dyna 2000
- Scan-Dyna 2400
- Scan-Dyna 3000
- Scan-Dyna 4000
- Plattenspieler:
- Scan-Dyna 1400
- Scan-Dyna 1700
- Lautsprecher:
- Scan-Dyna A-10
- Scan-Dyna A-20
- Scan-Dyna A-25
- Scan-Dyna A-25 II
- Scan-Dyna A-30
- Scan-Dyna A-30 II
- Kopfhörer:
- Scan-Dyna K-72x
Bilder
- Bild: Scan-Dyna 3000, A-25
Datei:Scan-Dyna 3000-A-25-1973.jpg
- Auszug aus Prospekt: Scan-Dyna A-10, A-20, A-25, A-30
Datei:Scan-Dyna A-10-20-25-30-Prospekt-1973.jpg
- Bild / Schema: Scan-Dyna A-25
Berichte
- Aperiodic: Manufacturer's Comment (aus Artikel von J. Gordon Holt, 1. Dez. 1969; über die erste A25 Version)
- The aperiodic design is not a bass-reflex approach, since there is no acoustic output through the port. The characteristics of the "plug" in the port are quite critical, necessitating individual adjustment of each system. This added acoustical impedance damps the woofer, improving its response to transient signals. Examination of the woofer cone motion shows that, with this aperiodic design (on which patents are pending), the cone follows the input signal all the way down to DC with far greater precision than is the case with either bass-reflex or acoustic-suspension designs. Dynaco
- Dynaudio nannte diese Bauart Dynaudio Variovent) und bei Scan-Speak war es "Flow Resistance Vent"