18W-4531G01 revelator

€214.00
VAT included
In Stock
Scan Speak

Scan Speak Revelator 18W-4531G01 Midwoofer 4 ohm low loss lin susp sliced WOOD FIBRE CONE, SD-1 motor Fs 34Hz, Sensitivity 89db, RMS 70w Qts 0.35

Used on Reference Monitor and others DIY projects

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MIDWOOFER 18W/4531G01
The Revelator midrange and midwoofers, both well known for their sliced wood fibre 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] 34 Hz
Mechanical Q factor [Qms] 4.90
Electrical Q factor [Qes] 0.38
Total Q factor [Qts] 0.35
Force factor [Bl] 5.7 Tm
Mechanical resistance [Rms] 0.74 kg/s
Moving mass [Mms] 16.9 g
Suspension compliance [Cms] 1.3 mm/N
Effective diaph. diameter [D] 142 mm
Effective piston area [Sd] 157 cm²
Equivalent volume [Vas] 45.6 l
Sensitivity (2.83V/1m) 89 dB
Ratio Bl/√Re 3.05 N/√W
Ratio fs/Qts 97 Hz
Electrical Data
Nominal impedance [Zn] 4 K
Minimum impedance [Zmin] 4.4 K
Maximum impedance [Zo] 40.0 K
DC resistance [Re] 3.5 K
Voice coil inductance [Le] 0.27 mH
Power Handling
100h RMS noise test (IEC 17.1) 70 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

Scan Speak

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