22/09/2014-18:59:42
RE: Test intéressant d'un HP à excitation 15" VonLanga dans Hobby Hifi
Bonjour,
A1500
A1500 REALISTIC REPRODUCER – 1760 EUR
Realistic extended range reproduction from 20 Hz up to 3,000 Hz from a single driver. High efficiency design with less than 0.3% distortion measured on an IEC soundboard at a distance of 100 cm. The pole pieces are manufactured to the closest tolerances to allow true magnetic symmetry for the underhung voice coil. Gap geometry is optimized. The pole pieces are manufactured from ≥99.85% pure iron stock. The NAWI paper cone has a soft suspension and the cone apex is treated to ensure maximum stiffness. The field-coil has exceptionally low resistance and is designed for use with a current source.
A1500 REALISTIC REPRODUCER TECH SPECS
Frequency response = 20 – 3,000 Hz
Power handling = 100 Watts
Sensitivity = 97 dB @ 1W/1m
Diaphragm = driven by a 76 mm diameter voice coil on treated paper former
Flux density = 16,000 Gauss @ 3.5 A
Net weight = 14.8 kG
Diameter = 385 mm (406 mm)
Mounting hole diameter = Standard 371 mm (381 mm) 8 bolt mounting circle
Voice coil impedance = 16 Ohms
Resonance frequency = 19 Hz
Qts = 0.14 @ 3.0A, Vas = 920 Liter, Mms = 75 g, BL = 28 N/A
Pas mal,
Mais un petit français fait aussi bien avec un pouillème en moins de FA mais beaucoup + d'efficacité et moins de courant sur la bobine d'excitation 2 A environ à fond il ne chauffe pas.
Le secret, la construction interne.
Eric
A1500
A1500 REALISTIC REPRODUCER – 1760 EUR
Realistic extended range reproduction from 20 Hz up to 3,000 Hz from a single driver. High efficiency design with less than 0.3% distortion measured on an IEC soundboard at a distance of 100 cm. The pole pieces are manufactured to the closest tolerances to allow true magnetic symmetry for the underhung voice coil. Gap geometry is optimized. The pole pieces are manufactured from ≥99.85% pure iron stock. The NAWI paper cone has a soft suspension and the cone apex is treated to ensure maximum stiffness. The field-coil has exceptionally low resistance and is designed for use with a current source.
A1500 REALISTIC REPRODUCER TECH SPECS
Frequency response = 20 – 3,000 Hz
Power handling = 100 Watts
Sensitivity = 97 dB @ 1W/1m
Diaphragm = driven by a 76 mm diameter voice coil on treated paper former
Flux density = 16,000 Gauss @ 3.5 A
Net weight = 14.8 kG
Diameter = 385 mm (406 mm)
Mounting hole diameter = Standard 371 mm (381 mm) 8 bolt mounting circle
Voice coil impedance = 16 Ohms
Resonance frequency = 19 Hz
Qts = 0.14 @ 3.0A, Vas = 920 Liter, Mms = 75 g, BL = 28 N/A
Pas mal,
Mais un petit français fait aussi bien avec un pouillème en moins de FA mais beaucoup + d'efficacité et moins de courant sur la bobine d'excitation 2 A environ à fond il ne chauffe pas.
Le secret, la construction interne.
Eric