Transcription of MIDWOOFER 18W/8531G00 - Scan-Speak
1 MIDWOOFER18W/8531G00 The Revelator midrange and midwoofers, both 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 represented a breakthrough in midrange clarity and overall smooth frequency response FEATURES: Patented Symmetrical Drive Motor Design Low-Loss linear suspension Die cast Alu Chassis vented below spider Sliced Cone (Controls Cone Breakups) Low Damping SBR Rubber Surround Large Ferrite Magnet SystemT-S ParametersResonance frequency [fs]28 HzMechanical Q factor [Qms] Q factor [Qes] Q factor [Qts] factor [Bl] TmMechanical resistance [Rms] kg/sMoving mass [Mms] gCompliance [Cms] mm/NEffective diaph.
2 Diameter [D]138 mmEffective piston area [Sd]150 cm Equivalent volume [Vas] lSensitivity ( )87 dBRatio Bl/ N/ WRatio fs/Qts77 HzNotes: 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 18, DataNominal impedance [Zn]8 Minimum impedance [Zmin] Maximum impedance [Zo] DC resistance [Re] Voice coil inductance [Le] mHPower Handling100h RMS noise test (IEC )60 WLong-term max power (IEC )70 WVoice Coil & Magnet DataVoice coil diameter38 mmVoice coil height18 mmVoice coil layers2 Height of gap5 mmLinear excursion mmMax mech. excursion 11 mmUnit Madsensvej 1 6920 Videb k Denmark Phone: +45 6040 5200 Parameters (Preliminary)Electrical dataResistance [Re'] Free inductance [Leb] mHBound inductance [Le] mHSemi-inductance [Ke] SHShunt resistance [Rss]220 Mechanical DataForce Factor [Bl] TmMoving mass [Mms] gCompliance [Cms] mm/NMechanical resistance [Rms] kg/sAdmittance [Ams] Madsensvej 1 6920 Videb k Denmark Phone: +45 6040 5200
