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SB23CACS45 / Ceramic
Technical Highlights
- Nennimpedanz 4 Ω, Resonanzfrequenz 23 Hz, Leistung 60 W.
- Nennimpedanz 8 Ω, Resonanzfrequenz 25 Hz, Leistung 50 W.
- Schwingspulendurchmesser 45,5 mm, Magnetgewicht 0,8 kg.
- More technical details
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SB23CACS45 / Ceramic by SB Acoustics Description
The SB Acoustics SB23CACS45 8" (20cm) midwoofer with ceramic membrane is available in a 4 Ohm and 8 Ohm variant. The ultra-light and stiff membrane is driven by a powerful ferrite magnet. The resonance frequency around 30 Hz is well outside the usable range, allowing the driver to perform extremely linearly within the usable range and making it ideal for 2-way applications or as a pure midrange driver. The generously ventilated centering spider optimizes the rear compression behavior to a maximum and provides additional cooling.
Features:
- Soft rubber edge with low damping for improved settling behavior
- Geometrically reinforced ceramic membrane for improved resolution control
- Short-circuit ring in the motor system for reduced distortions
- Ventilated pole shoe for reduced compression
- Ventilated aluminum die-cast chassis for optimal strength and low compression
- Flat construction
- Non-conductive fiberglass coil carrier for minimal damping
- CCAW coil for reduced moving mass
- Durable silver wires
Data 4 Ohm variant:
- Nominal impedance 4 Ω
- Frequency range 70Hz - 2kHz
- Direct current resistance, Re 3.3 Ω
- Inductance of the oscillating coil, Le 0.27 mH
- Effective membrane area, Sd 216 cm2
- Diameter of the vibrating coil 45.5 mm
- Height of the oscillating coil 19 mm
- Height of air gap 6 mm
- Linear coil stroke (p-p) 13 mm
- Magnetic flux density 0.86 T
- Weight of the magnet 0.8 kg
- Net weight 2.7 kg
- Free air resonance, Fs 23 Hz
- Sensitivity (2.83V/1m) 90 dB
- Mechanical Q-factor, Qms 6.0
- Electrical Q-factor, Qes 0.35
- Total Q factor, Qts 0.33
- Moving mass including air, Mms 33 g
- Power factor, Bl 6.7 Tm
- Equivalence volume, vessel 95 liters
- Compliance, Cms 1.43 mm/N
- Mechanical loss, Rms 0.8 kg/s
- Rated load capacity* 60 W
- * IEC 268-5, T/S-Parameter measured on retracted drives.
Data 8 Ohm variant:
- Nominal impedance 8 Ω
- Frequency range 70Hz - 2kHz
- Direct current resistance, Re 5.6 Ω
- Inductance of the oscillating coil, Le 0.60 mH
- Effective membrane area, Sd 216 cm2
- Winding coil diameter 45.5 mm
- Height of the oscillating coil 19 mm
- Height of air gap 6 mm
- Linear coil stroke (p-p) 13 mm
- Magnetic flux density 0.86 T
- Weight of the magnet 0.8 kg
- Net weight 2.7 kg
- Free air resonance, Fs 25 Hz
- Sensitivity (2.83 V / 1 m) 87.5 dB
- Mechanical Q-factor, Qms 5.41
- Electrical Q-factor, Qes 0.44
- Total Q factor, Qts 0.40
- Moving mass including air, Mms 31. g
- Power factor, Bl 7.9 Tm
- Equivalence volume, VAS 87 liters
- Compliance, Cms 1.31 mm/N
- Mechanical loss, Rms 0.9 kg/s
- Rated power* 50 W
- * IEC 268-5, T/S-Parameter measured on retracted drives.
Dimensions:
