{"product_id":"sb-acoustics-sb23cacs45-ceramic-tiefmitteltoener","title":"SB23CACS45 \/ Ceramic","description":"\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSoft rubber edge with low damping for improved settling behavior\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGeometrically reinforced ceramic membrane for improved resolution control\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eShort-circuit ring in the motor system for reduced distortions\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVentilated pole shoe for reduced compression\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVentilated aluminum die-cast chassis for optimal strength and low compression\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFlat construction\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNon-conductive fiberglass coil carrier for minimal damping\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCCAW coil for reduced moving mass\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDurable silver wires\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eData 4 Ohm variant: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal impedance 4 Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency range 70Hz - 2kHz\u003c\/li\u003e\n\u003cli\u003eDirect current resistance, Re 3.3 Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInductance of the oscillating coil, Le 0.27 mH\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEffective membrane area, Sd 216 cm2\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDiameter of the vibrating coil 45.5 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight of the oscillating coil 19 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight of air gap 6 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLinear coil stroke (p-p) 13 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMagnetic flux density 0.86 T\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight of the magnet 0.8 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNet weight 2.7 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFree air resonance, Fs 23 Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensitivity (2.83V\/1m) 90 dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMechanical Q-factor, Qms 6.0\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectrical Q-factor, Qes 0.35\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTotal Q factor, Qts 0.33\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMoving mass including air, Mms 33 g\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower factor, Bl 6.7 Tm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEquivalence volume, vessel 95 liters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompliance, Cms 1.43 mm\/N\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMechanical loss, Rms 0.8 kg\/s\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated load capacity* 60 W\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e* IEC 268-5, T\/S-Parameter measured on retracted drives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eData 8 Ohm variant: \u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNominal impedance 8 Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFrequency range 70Hz - 2kHz\u003c\/li\u003e\n\u003cli\u003eDirect current resistance, Re 5.6 Ω\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInductance of the oscillating coil, Le 0.60 mH\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEffective membrane area, Sd 216 cm2\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWinding coil diameter 45.5 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight of the oscillating coil 19 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight of air gap 6 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLinear coil stroke (p-p) 13 mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMagnetic flux density 0.86 T\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight of the magnet 0.8 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eNet weight 2.7 kg\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eFree air resonance, Fs 25 Hz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSensitivity (2.83 V \/ 1 m) 87.5 dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMechanical Q-factor, Qms 5.41\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eElectrical Q-factor, Qes 0.44\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eTotal Q factor, Qts 0.40\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMoving mass including air, Mms 31. g\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower factor, Bl 7.9 Tm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eEquivalence volume, VAS 87 liters\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eCompliance, Cms 1.31 mm\/N\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eMechanical loss, Rms 0.9 kg\/s\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated power* 50 W\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e* IEC 268-5, T\/S-Parameter measured on retracted drives.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDimensions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg alt=\"SB23CACS45 \/ Ceramic\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0271\/9478\/5927\/t\/121\/assets\/8-sb23cacs45-4-drawing.jpg\" data-original=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0271\/9478\/5927\/files\/8-SB23CACS45-4-DRAWING_480x480.jpg?v=1631214949\"\u003e\u003c\/strong\u003e\u003c\/p\u003e","brand":"SB Acoustics","offers":[{"title":"4 Ohm","offer_id":40502701392051,"sku":"SB23CACS45-4","price":151.0,"currency_code":"EUR","in_stock":true},{"title":"8 Ohm","offer_id":40502701424819,"sku":"SB23CACS45-8","price":151.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0271\/9478\/5927\/files\/sb-acoustics-sb23cacs45-ceramic-8-20cm-tiefmitteltoner-masori-kaufen.webp?v=1778269431","url":"https:\/\/masori.de\/en\/products\/sb-acoustics-sb23cacs45-ceramic-tiefmitteltoener","provider":"Masori | Shop","version":"1.0","type":"link"}