Sonic Electronix continues to cut up to 80% off a selection of subwoofers, amplifiers, and more during its Subtember Sale. Plus, take an extra 5% off select items via coupon code "SUBT5", an extra 10% off via coupon code "SUBT10", or an extra 20% off via coupon code "SUBT20". (Eligible items are marked with the appropriate coupon on the listing page.) Shipping adds $5 or get free shipping on orders of $49 or more.

See all Sonic Electronix Coupons.