Thunder4000 T4104A 10" subwoofer brings power and sonic depth to your music that full-range speakers can't begin to approach. The woofer's black laminated paper cone and foam surround combine for ultra-quick response, and its vented pole piece allows cone movement to circulate air around the voice coil for cooler operation. Asymmetrical Linear Drive System (ALDS) employs a flat, progressive spider to improve suspension and an extended vented pole piece to smooth out the cone's linear motion. The result — high output and low distortion! This versatile sub delivers big bass from virtually any sealed, ported, or bandpass enclosure.

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* 10” SUBWOOFER 4 Ohm FREQUENCY RESPONSE 39-150 Hz PEAK POWER 400 watts RMS 50-200 watts RMS SENSITIVITY 87.7 dB TOP-MOUNT DEPTH 4-3/4" VOICE COIL 2.5” MAGNET WEIGHT 33 oz Sealed box volume 0.75 cu. ft. Ported box volume 1.5 cu. ft. No Manufacture warranty