Check the listing for details. Logitech Z407 Replacement Left Or Right Speaker Subwoofer Grade B Tested. Color: Black, Condition: Used. Listed at 17.99 USD. SPEAKERS ARE IN GRADE B CONDITION AND MAY HAVE SOME SLIGHT SCRATCHES AND SCUFFS BUT NOTHING THAT AFFECTS PERFORMANCE. SATELLITE SPEAKERS DO NOT INCLUDE THE PLASTIC STANDS. SUBWOOFER DOES NOT INCLUDE HOCKEY PUCK WIRELESS REMOTE. YOU WILL NEED TO RE-PAIR NEW SUBWOOFER TO EXISTING CONTROLLER If your original wireless control dial stopped working and you’ve purchased a replacement dial or subwoofer, you’ll need to connect the new dial to your Z407 speakers. Here’s how:Remove the batteries from the original wireless control dial to make sure that your speaker is disconnected from the original dial.Insert 2 AAA batteries in the new dial and then turn on your speaker.Long-press the wired input button and the Bluetooth button for eight seconds to activate initial pairing. The new dial will blink twice in blue and then turn solid after it connects to your Z407 speakers. You will hear a connected tone.