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Midrange 18m/4631t00 - Tout Le Haut Parleur

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MIDRANGE 18M/4631T00 The Revelator midranges are well known for their sliced paper cone technology. The slices are filled with damping glue which dramatically reduces break-up modes in the diaphragm. In combination with Scan-Speaks low-loss linear suspension and the patented Symmetrical Drive (SD-1) it represents a breakthrough in midrange clarity and overall smooth frequency response characteristics. KEY FEATURES: · Patented Symmetrical Drive motor design · Low-loss Linear Suspension · Coated Foam Surround T-S Parameters Resonance frequency [fs] Mechanical Q factor [Qms] Electrical Q factor [Qes] Total Q factor [Qts] Force factor [Bl] Mechanical resistance [Rms] Moving mass [Mms] Compliance [Cms] Effective diaph. diameter [D] Effective piston area [Sd] Equivalent volume [Vas] Sensitivity (2.83V/1m) Ratio Bl/√Re Ratio fs/Qts 65 Hz 5.65 0.67 0.60 5.6 Tm 1.03 kg/s 14.3 g 0.42 mm/N 138 mm 154 cm² 14.0 l 92 dB 2.96 N/√W 110 Hz Notes: IEC specs. refer to IEC 60268-5 third edition. All Scan-Speak products are RoHS compliant. Data are subject to change without notice. Datasheet updated: February 22, 2016. · Sliced Cone (Control Cone Breakups) · High Sensitivity 92dB @ 2,83V · Rigid Titanium Voice Coil Former Electrical Data Nominal impedance [Zn] 4Ω Minimum impedance [Zmin] 3.9 Ω DC resistance [Re] 3.5 Ω Maximum impedance [Zo] Voice coil inductance [Le] Power Handling 100h RMS noise test (IEC 17.1)* Long-term max power (IEC 17.3)* *Filter: 2. order HP Butterworth, 100Hz Voice Coil & Magnet Data Voice coil diameter Voice coil height Voice coil layers Height of gap Linear excursion Max mech. excursion Unit weight N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk 29 Ω 0.16 mH 70 W 250 W 38 mm 11 mm 2 5 mm ± 3 mm ± 14.5 mm 1.7 kg MIDRANGE 18M/4631T00 Advanced Parameters Electrical data Resistance [Re'] -Ω Free inductance [Leb] - mH Semi-inductance [Ke] - SH Bound inductance [Le] Shunt resistance [Rss] - mH -Ω (Preliminary) Mechanical Data Force Factor [Bl] Moving mass [Mms] - Tm -g Compliance [Cms] - mm/N Admittance [Ams] - mm/N Mechanical resistance [Rms] N.C. Madsensvej 1 · 6920 Videbæk · Denmark · Phone: +45 6040 5200 · www.scan-speak.dk - kg/s