{
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    "slug": "4-sb12pfcr25-4-coax",
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        "rendered": "4” SB12PFCR25-4-COAX"
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        "rendered": "<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2167\" src=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-DRAWING-500x246-1-300x148.jpg\" alt=\"\" width=\"300\" height=\"148\" srcset=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-DRAWING-500x246-1-300x148.jpg 300w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-DRAWING-500x246-1-18x9.jpg 18w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-DRAWING-500x246-1.jpg 500w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-2168\" src=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-GRAFIK-500x286-1-300x172.jpg\" alt=\"\" width=\"300\" height=\"172\" srcset=\"https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-GRAFIK-500x286-1-300x172.jpg 300w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-GRAFIK-500x286-1-18x10.jpg 18w, https:\/\/pltspeaker.com\/wp-content\/uploads\/2025\/07\/4-SB12PFCR25-4-COAX-GRAFIK-500x286-1.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>Vented reinforced plastic chassis<\/li>\n<li>Proprietary cone material with natural fibers made in-house<\/li>\n<li>Soft low damping rubber surround for improved transient response<\/li>\n<li>Optimized motor system<\/li>\n<li>Non-resonant long life lead wires<\/li>\n<li>Compact large surround dome tweeter<\/li>\n<\/ul>\n<h2 class=\"yikes-custom-woo-tab-title yikes-custom-woo-tab-title-specs\">Specs<\/h2>\n<p>SPECS WOOFER:<\/p>\n<ul>\n<li>Nominal Impedance 4 \u03a9<\/li>\n<li>DC resistance, Re 3.1 \u03a9<\/li>\n<li>Voice coil inductance, Le 0.26 mH<\/li>\n<li>Effective piston area, Sd 45 cm<sup>2<\/sup><\/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 1.0 T<\/li>\n<li>Magnet weight 0.40 kg<\/li>\n<li>Net weight 0.86 kg<\/li>\n<li>Free air resonance, Fs 58 Hz<\/li>\n<li>Sensitivity (2.83V\/1m) 87 dB<\/li>\n<li>Mechanical Q-factor, Qms 4.07<\/li>\n<li>Electrical Q-factor, Qes 0.36<\/li>\n<li>Total Q-factor, Qts 0.33<\/li>\n<li>Moving mass incl. air,Mms 4.5 g<\/li>\n<li>Force factor, Bl 3.8 Tm<\/li>\n<li>Equivalent volume, Vas 4.8 liters<\/li>\n<li>Compliance, Cms 1.66 mm\/N<\/li>\n<li>Mechanical loss, Rms 0.4 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>\n<p>&nbsp;<\/p>\n<p>SPECS TWEETER:<\/p>\n<ul>\n<li>Nominal Impedance 4 \u03a9<\/li>\n<li>DC resistance, Re 3.0 \u03a9<\/li>\n<li>Voice coil diameter 12.4 mm<\/li>\n<li>Voice coil height 1.2 mm<\/li>\n<li>Air gap height 1.5 mm<\/li>\n<li>Free air resonance, Fs 1300 Hz<\/li>\n<li>Sensitivity (2.83V\/1m) 89 dB<\/li>\n<li>Rated power handling* 10 W<\/li>\n<li>Magnetic flux density 1.05 T<\/li>\n<li>Magnet weight 0.003 kg<\/li>\n<li>Net weight 0.014 kg<\/li>\n<\/ul>",
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