SpeakerCraft SDSi Subwoofers  

 Available in a choice of four models that incorporate multiple driver arrays that span from 8 inches to 15 inches, SpeakerCraft’s SDSi subs also provide wireless connectivity options. SpeakerCraft emphasizes each model utilizes a total of three drivers. SpeakerCraft also point out the SDSi series of subwoofers include matte-black cabinets.