These are never used bass exciters that I got in a lot of other equipment. There is no brand on them or on the boxes. I have no information on these at all, they are sold as is. Cheap pack of 5 for someone to experiment with.

Speaker Full Range Loudspeaker Resonance Sound Exciter Super Bass Durable Description: Features: brand new and . Suitable for LED Tv speakers. Lightweight and easy to install. Also can be use for sound or other devicrs. Can replace your broken or the old one. Specifications: Item Type: LCD TV Speakers Material: Metal Color: As show in the picture Audio Crossover: Full-Range Communication: Line Size: 13.5×3.6×2.9cm/5.31×1.42×1.14in (approx.) Quantity: 1 Set (1 Pair) (other accessories demo in the picture is not included) Note: 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes:(No retail package) 1 Pair X LCD TV Speakers