This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

This MartinLogan Grotto subwoofer system is a top-of-the-line device that will bring your listening experience to a whole new level. With its high-resolution audio and powerful bass, youll feel like youre right in the middle of your favorite songs and movies. The sleek black design and wooden material will seamlessly blend into any home audio setup.This subwoofer is the perfect addition to any stereo system with its stereo L/R RCA audio inputs and wired connectivity. It features advanced servo-control technology for precise and accurate sound reproduction. The MartinLogan Grotto subwoofer system is a high-end device that will enhance your audio experience.

In time for the holidays as a gift to that audiophile in your life, or for adding that bottom end in some great entertainment. An outstanding clarity subwoofer. Gently and respectfully used - good condition. Minor cosmetic marks that polish out nicely. Photos taken without polish or wax applied.Adjustable feet on bottomExtra grille included in case needed - it has a minor 1/4 rip in middle. =========Elevate your home audio experience with the MartinLogan Grotto subwoofer system. It boasts a powerful 250W RMS power output and a wired connectivity option for seamless integration into your existing setup. The triangular shape and sleek black color make it a stylish addition to any room. With stereo L/R RCA and speaker audio inputs, this subwoofer is compatible with a wide range of devices. The Grotto is designed to deliver high-resolution audio with servo control technology for accurate and clean bass. Whether youre watching movies or listening to music, the MartinLogan Grotto subwoofer system is sure to enhance your home entertainment experience. Specifications from the MartinLogan website:Frequency Response22–150 Hz ±3dB; Anechoic through LFE effects inputImpedanceRCA Line Level In: 20,000 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.Low Frequency Transducer10 (25.4cm) high excursion, aluminum element woofer with extended throw drive assembly, non-resonance asymmetrical chamber formatAmplifier250 watts rms (350 watts peak)Audio Controls25Hz Level Control: ±12dB Power: Auto/On/StandbyHigh Pass Filter Frequency70 HzLow Pass Filter Frequency30, 35, 45, 55, 65, 80 HzInputsRCA line level; RCA LFE; speaker levelWeight40 lbs. (18.2 kg)Dimensions15.4 × 15 × 12.9 (39.1cm × 38.1cm × 32.8cm)