Динамик ВЧ SCANSPEAK D2905/970000. Инструкция на английском языке

TWEETER                                                   D2905/970000
The Classic tweeters are among the many highly praised designs in Classic series. They
have enjoyed success over 3 decades. And still among the best tweeters available. The
D2905/9000 tweeter kick-started a new era with a line of very high quality 1"
tweeters, today known as -9300, -9500, -9700 and -9800. Despite their many years
on the marked still used in many top High-End speakers around the world.
KEY FEATURES:
? 1" Textile Dome Diaphragm                ? Frequency Extension to above 30KHz
? Patented Symmetrical Drive (SD-2) motor    ? Low Resonance Rear Chamber
? Black Painted Alu Face Plate
T-S Parameters                                  Electrical Data
Resonance frequency [fs]       500 Hz           Nominal impedance [Zn]           6 ?
Mechanical Q factor [Qms]        3.45           Minimum impedance [Zmin]        5.7 ?
Electrical Q factor [Qes]        0.54           Maximum impedance [Zo]         34.6 ?
Total Q factor [Qts]             0.47           DC resistance [Re]              4.7 ?
Force factor [Bl]              3.5 Tm           Voice coil inductance [Le]    0.01 mH
Mechanical resistance [Rms]  0.41 kg/s
Power Handling
Moving mass [Mms]               0.45 g
100h RMS noise test (IEC 17.1)*  225 W
Suspension compliance [Cms]  0.23 mm/N
Long-term max power (IEC 17.3)*    - W
Effective diaph. diameter [D]  33 mm
*Filter: 2. order HP Butterworth, 2.8 kHz
Effective piston area [Sd]    8.5 cm?
Voice Coil and Magnet Data
Equivalent volume [Vas]         0.02 l
Voice coil diameter             28 mm
Sensitivity (2.83V/1m)         89.5 dB
Voice coil height              3.3 mm
Ratio Bl/vRe                1.61 N/vW
Voice coil layers                   2
Ratio fs/Qts                  1068 Hz
Height of gap                  2.5 mm
Notes:                                         Linear excursion              ± 0.4 mm
IEC specs. refer to IEC 60268-5 third edition.   Max mech. excursion         ± 1.5 mm
All Scan-Speak products are RoHS compliant.
Data are subject to change without notice.     Unit weight                     0.7 kg
Datasheet updated: February 22, 2011.
N.C. Madsensvej 1 ? 6920 Videb?k ? Denmark ? Phone: +45 6040 5200 ? www.scan-speak.dk

TWEETER                                                   D2905/970000
Advanced Parameters (Preliminary)
Electrical data:                                Mechanical Data
Resistance [Re']                  - ?           Force Factor [Bl]               - Tm
Free inductance [Leb]            - mH           Moving mass [Mms]                 - g
Bound inductance [Le]            - mH           Compliance [Cms]              - mm/N
Semi-inductance [Ke]             - SH           Mechanical resistance [Rms]     - kg/s
Shunt resistance [Rss]            - ?           Admittance [Ams]              - mm/N
N.C. Madsensvej 1 ? 6920 Videb?k ? Denmark ? Phone: +45 6040 5200 ? www.scan-speak.dk