SAFE & SECURE SHOPPING. 11.7” 1200W Audio Subwoofer Sub Speaker Amplifier Active Underseat Car Bass Box. Thank you for your cooperation! Max Output Power: 1200W. High level Input Sensitivity: 0.9v. Low Level Input Sensitivity: 150mV. Low Pass Filter: 50-150Hz. Fully functional and easy to debug. 75 mm Slim fuselage, installed under the seat. Design of high temperature resistant coil. Fine workmanship and good performance. 6″9″ speaker gives A different kind of heavy bass effect. Welcome to our store! In the sale of high-quality. Car and motorcycle accessories. Thank you in advance. But, we’d like to assist you to receive the goods smoothly if there are anything we can do here. We will check and offer a good solution to you. Reason is because transit time is highly depended and provided by postal service (except weekends and holidays).