MTX RTE12AS picture


30cm 12“ 350W RMS 4Ω Small Sealed Passive Enclosure with en 19mm MDF construction


The MTX RTE12AS subwoofer is a small size high performance sealed enclosure with a 30cm 12“ 4Ω subwoofer. It supports over 350W RMS and 1050W Peak, making it an excellent power size ratio. Its small size allows it to fit in the trunk and leave room for shopping. And it's worth it to take up some space in the trunk, because in terms of sound, it's a whole new lemonade compared to the poor performance of the original installations in the extreme bass. The RTE12AS reproduces a particularly clean gave because of its closed load. It is precise and fast. it never lags and it doesn't buzz. On the other hand, it hits very dry and it goes down with ease and a lot of control. Despite its small size, this is a truly hi-fi subwoofer. We recommend using the MTX TX2275 amplifier as a bridge to power it.


• Reduced size sealed enclosure for space-saving installation
• Excellent sound quality with fast and precise sound
• Ø30cm 12“ subwoofer for deep and powerful bass
• Exceptional power handling (350W RMS and 1050W Peak)
• Subwoofer optimized and built for this subwoofer
• Solid construction in 16mm MDF, rubber seal, push terminal blocks
• Incredible value for money
• Recommended amplifiers: MTX TX2275 TX2450 TR275 TR450 TX480


• Sealed enclosure
• 30cm 12“ subwoofer
• CEA RMS power: 350W
• Peak power: 1400W
• Impedance: 4Ω
• Sensitivity: 92.5dB / 2.83V / 1m
• Response: 23-300Hz
• Weight: 13Kg
• Dimensions: 36.5x45x31.8cm
• Internal volume: 21 liters

Recommended efficient associations

Recommended Amplifiers: MTX TX2275 TX2450 TR275 TR450 TX480


The RTE12AS is a 4Ω enclosure that supports up to 350W RMS. The perfect amplifier is therefore the MTX TX2275 or the TR275 which optimize their power under 4Ω in bridged mode. They are made for each other.
It is also possible to use the TX2450 and TR450 on two bridged channels. But they are less powerful.
The best for last… the TX480D is very dynamic and very powerful. It is also an ideal combination.


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 / day
92dB : maximum 6 hours / day
95db : maximum 4 hours / day
97db : maximum 3 hours / day
100db : maximum 2 hours / day
102db : maximum 90 minutes / day
105db : maximum 60 minutes / day
110db : maximum 30 minutes / day
115db : maximum less than 15 minutes / day
120db : immediate danger, 0 minutes / day



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