The Revelator midrange and midwoofers, both well known for their sliced paper cone technology. The slices are filled with damping glue, which dramatically reduces breakup 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 characteristics.
KEY FEATURES:
. Patented Symmetrical Drive Motor Design
. Wood Fibre Cone
. Low Damping SBR Rubber Surround
. Sliced Cone (Controls Cone Breakups)
. Low-Loss linear suspension
. Large Ferrite Magnet System
T-S Parameters
Resonance frequency [fs] 28 Hz
Mechanical Q factor [Qms] 5.10
Electrical Q factor [Qes] 0.39
Total Q factor [Qts] 0.36
Force factor [Bl] 6.8 Tm
Mechanical resistance [Rms] 0.60 kg/s
Moving mass [Mms] 17.5 g
Suspension compliance [Cms] 1.85 mm/N
Effective diaph. diameter [D] 138 mm
Effective piston area [Sd] 150 cm2
Equivalent volume [Vas] 58.2 l
Sensitivity (2.83V/1m) 87 dB
Ratio Bl/ãRe 2.82 N/ãW
Ratio fs/Qts 77 Hz
Electrical Data
Nominal impedance [Zn] 8 K
Minimum impedance [Zmin] 6.4 K
Maximum impedance [Zo] 81.6 K
DC resistance [Re] 5.8 K
Voice coil inductance [Le] 0.35 mH
Power Handling
100h RMS noise test (IEC 17.1) 60 W
Long-term max power (IEC 17.3) - W
Voice Coil and Magnet Data
Voice coil diameter 38 mm
Voice coil height 18 mm
Voice coil layers 2
Height of gap 5 mm
Linear excursion } 6.5 mm
Max mech. excursion } 11 mm
Unit weight 1.7 kg
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