ESU 50321 LokSound Sugar Cube Speaker ~ 15mm x 11mm 8 Ohms With Sound Chamber | eBay
ESU DCC Speaker 50321 11mm x 15mm Square 8 ohm 1 watt with Sound Chamber
ESU 50321 Single 11x15mm Sugar Cube 8Ohm Speaker w/ Sound Chamber Set For Sale -- Kingston Locomotive Works - Retailers of New and Used Model Train & Hobby Products in Kingston, Ontario, Canada
ESU 50321 LokSound Sugar Cube Speaker ~ 15mm x 11mm 8 Ohms With Sound Chamber | eBay