The 30cm 12“ 250W RMS 4Ω single voice coil MTX RT12-04 subwoofer is full featured: long throw excursion, rubber suspension, polypropylene cone with embossed MTX logo, large magnetic structure, extra large 50mm 2“ voice coil, SPV cooling technology, ALDS technology, etc. Considering the price, it's a feat.
• Long Throw suspension for low distortion and high power handling• One-piece cone with embossed MTX logo for the look• Thick sheet metal frame (1mm) for more rigidity• Large eXtra magnetic structure (130x25mm) for more power handling• 50mm voice coil for more reliability• Wires braided in the spider for more reliability• Spider eXtra large for more Xmax• Push connectors for better contact• SPV technology for coil cooling• ALDS technology for reliability and for low level detail and high level power handling
• Subwoofer diameter 30cm 12"• Max power: 750W• RMS power: 250W• Sensitivity: 92.0dB / 2.83v / 1m• Impedance: 4Ω• Response: 20Hz - 500Hz• Depth: 13.4cm
• Fs : 28,0 Hz• Re : 3,20 Ω• Z : 4 Ω• Qms : 6,87• Qes : 0,58• Qts : 0,54• Vas : 68 liters• Mms : 164,53 grams• Cms : 186 mm/N• Bl : 12,78 N/A• Sd : 510,71 cm2• Vd : 0,740 liters• Xmax : 14,5 mm• Prms : 250 Watts• SPL 2,83V/1m : 92,0dB
• Recommended enclosures: 34 liters sealed or 57 liters vented (See manual for more details).• Recommended amplifier: - for one RT12-04: a TX2275, a TR275 or a TX480D on two bridged channels under 4Ω. TX2450 or TR450 is also possible but it is less powerful - for two RT12-04: use one TX6500D under 2Ω
MTX wants you to enjoy your hearing for a long time. Excessive exposure to loud volumes can damage your hearing. The United States Department of Labor recommends not exceeding the following recommendations:90db : maximum 8 hours / day92dB : maximum 6 hours / day95db : maximum 4 hours / day97db : maximum 3 hours / day100db : maximum 2 hours / day102db : maximum 90 minutes / day105db : maximum 60 minutes / day110db : maximum 30 minutes / day115db : maximum less than 15 minutes / day120db : immediate danger, 0 minutes / day
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