These are not your average teeny-tiny Bluetooth speakers. Nope, these are the muscle-bound, Arnold Schwarzenegger of audio gear: Kenwood's 12in subwoofers. Producing a wall of sound that'll rearrange your internal organs, these beasts are perfect for those who believe 'loud' is a volume setting amateurs use. So stock up on earplugs, warn your granny next door and brace for a sonic boom - these bad boys don't know the meaning of 'quiet'