

121XR 12" Bass-mid woofer 8 ohms
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The REDCATT 121XR is a high-excursion 12" bass-mid woofer for professional 2-way, multi-way and subwoofer designs, combining neodymium motor strength, low inductance and ultra-low distortion performance.
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REDCATT 121XR 12" Bass-Mid Woofer 8 Ohm
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The REDCATT 121XR is engineered for demanding professional woofers applications where strong bass output and clear mid-frequency reproduction are both required. Its XR technology and static shorting coil help keep distortion exceptionally low, with THD below 0.5% from 20 Hz up to 2.5 kHz.
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A neodymium motor structure, large magnets positioned along the voice coil winding and a shorting coil over the full main coil excursion contribute to high excursion and controlled behaviour. The 63.5 mm copper voice coil on a glass-fiber former, combined with unique gap venting, supports reliable operation under high output conditions.
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The carbon-fiber-loaded paper cone, fabric surround and large Nomex spider with stitched tinsel wires make the 121XR suitable as a high-performance bass-mid woofer in 2-way and multi-way speaker systems. With 95.78 dB sensitivity, 16.00 T·m BL and only 0.160 mH inductance, it is built for efficient, clean and dynamic reproduction.
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For enclosure design, the 121XR works in bass-reflex alignments such as 55 liters tuned to 51 Hz for strong mid-bass, 65 liters tuned to 45 Hz for balanced general-purpose use, or 80 liters tuned to 39 Hz for extended low-frequency output. It can also be used in subwoofer applications when protected with an appropriate high-pass filter.
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