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    "title": {
        "rendered": "4” SB12NRX25-8 \/ Norex"
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        "rendered": "<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1771\" src=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-DRAWING-500x246-1-300x148.jpg\" alt=\"\" width=\"300\" height=\"148\" srcset=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-DRAWING-500x246-1-300x148.jpg 300w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-DRAWING-500x246-1-18x9.jpg 18w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-DRAWING-500x246-1.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1772\" src=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-GRAFIK-500x246-1-300x148.jpg\" alt=\"\" width=\"300\" height=\"148\" srcset=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-GRAFIK-500x246-1-300x148.jpg 300w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-GRAFIK-500x246-1-18x9.jpg 18w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12NRX25-8-GRAFIK-500x246-1.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<h2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-features\">Features<\/h2>\n<ul>\n<li>Proprietary cone material with natural fibres made in-house<\/li>\n<li>High damping Butyl rubber surround for non-resonant sound character<\/li>\n<li>Vented pole piece for reduced compression<\/li>\n<li>Vented cast aluminium chassis for optimum strength and low compression<\/li>\n<li>CCAW voice coil for reduced moving mass<\/li>\n<li>Long life silver lead wires<\/li>\n<li>Non-conducting fibre glass coil former for minimum damping<\/li>\n<li>Shorting ring in motor system for reduced distortion<\/li>\n<\/ul>\n<h2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-specs\">Specs<\/h2>\n<ul>\n<li>Nominal Impedance 8 \u03a9<\/li>\n<li>DC resistance, Re 6.4 \u03a9<\/li>\n<li>Voice coil inductance, Le 0.34 mH<\/li>\n<li>Effective piston area, Sd 50 cm2<\/li>\n<li>Voice coil diameter 25.4 mm<\/li>\n<li>Voice coil height 15 mm<\/li>\n<li>Air gap height 5 mm<\/li>\n<li>Linear coil travel (p-p) 10 mm<\/li>\n<li>Magnetic flux density 1.07 T<\/li>\n<li>Magnet weight 0.40 kg<\/li>\n<li>Net weight 0.92 kg<\/li>\n<li>Free air resonance, Fs 57 Hz<\/li>\n<li>Sensitivity (2.83 V \/ 1 m) 85.5 dB<\/li>\n<li>Mechanical Q-factor, Qms 4.1<\/li>\n<li>Electrical Q-factor, Qes 0.41<\/li>\n<li>Total Q-factor, Qts 0.37<\/li>\n<li>Moving mass incl. air, Mms 5.2 g<\/li>\n<li>Force factor, Bl 5.4 Tm<\/li>\n<li>Equivalent volume, VAS 5.3 liters<\/li>\n<li>Compliance, Cms 1.49 mm\/N<\/li>\n<li>Mechanical loss, Rms 0.45 kg\/s<\/li>\n<li>Rated power handling* 30 W<\/li>\n<\/ul>\n<p>* IEC 268-5, T\/S parameters measured on drive units that are broken in.<\/p>",
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