Динамик СЧ/НЧ SCANSPEAK 18WU/4741T00. Инструкция на английском языке

MIDWOOFER                                                18WU/4741T00
The Illuminator midranges and midwoofers are in every aspect unusual designs with
the open construction, the extremely long linear excursion and patented under-hung
SD-3 (Symmetrical Drive) neodymium motor system, which due to copper caps and its
construction ensures very low distortion, adding the unique patented cones, low-loss
linear suspension the result is: “The Very Best Money Can Buy”!
KEY FEATURES:
? Under-Hung Neodymium Motor Design        ? Patented Symmetrical Drive (SD-3)
? Patented Sandwich Paper Cone             ? Exceptionally Long Linear Excursion
? Low-Loss linear suspension               ? Patented Design
T-S Parameters                                  Electrical Data
Resonance frequency [fs]        30 Hz           Nominal impedance [Zn]           4 ?
Mechanical Q factor [Qms]        3.56           Minimum impedance [Zmin]        4.5 ?
Electrical Q factor [Qes]        0.32           Maximum impedance [Zo]         38.8 ?
Total Q factor [Qts]             0.29           DC resistance [Re]              3.2 ?
Force factor [Bl]                6 Tm           Voice coil inductance [Le]     0.5 mH
Mechanical resistance [Rms]  1.00 kg/s
Power Handling
Moving mass [Mms]               18.9 g
100h RMS noise test (IEC 17.1)   80 W
Suspension compliance [Cms]  1.49 mm/N
Long-term max power (IEC 17.3)  150 W
Effective diaph. diameter [D]  140 mm
Effective piston area [Sd]    154 cm?          Voice Coil and Magnet Data
Equivalent volume [Vas]         49.4 l         Voice coil diameter             42 mm
Sensitivity (2.83V/1m)         87.2 dB         Voice coil height                8 mm
Ratio Bl/vRe                3.35 N/vW          Voice coil layers                   4
Height of gap                   20 mm
Ratio fs/Qts                   102 Hz
Linear excursion               ± 9 mm
Notes:                                         Max mech. excursion           ± 16 mm
IEC specs. refer to IEC 60268-5 third edition.   Unit weight                   1.7 kg
All Scan-Speak products are RoHS compliant.
Data are subject to change without notice.
Datasheet updated: February 22, 2011.
N.C. Madsensvej 1 ? 6920 Videb?k ? Denmark ? Phone: +45 6040 5200 ? www.scan-speak.dk

MIDWOOFER                                                18WU/4741T00
Advanced Parameters (Preliminary)
Electrical data:                                Mechanical Data
Resistance [Re']               3.41 ?           Force Factor [Bl]             5.20 Tm
Free inductance [Leb]       0.0517 mH           Moving mass [Mms]              17.1 g
Bound inductance [Le]         2.59 mH           Compliance [Cms]          0.963 mm/N
Semi-inductance [Ke]        0.0641 SH           Mechanical resistance [Rms]  0.178 kg/s
Shunt resistance [Rss]         4.53 ?           Admittance [Ams]          0.140 mm/N
N.C. Madsensvej 1 ? 6920 Videb?k ? Denmark ? Phone: +45 6040 5200 ? www.scan-speak.dk