The WL 90 wall-mounted speakers are equipped with a premium full range chassis and especially suitable for music and speech reproduction in 100 V sound reinforcement systems. Due to the integrated 100 V transformers the WL 90 series can be used at full, half or quarter output power. The mounting is carried out through two screws. WL 90 R provides a low impedance volume control while the WL 90 RP low impedance volume control is bridged when used with a priority relay.