High impedance (HZ) amplifiers and speakers for use in larger 70/100 Volt installations playing from the same amplifier channel. 100 Volt systems are often used where many loudspeakers must be installed in parallel, e.g. in hotel corridors, lobbies, restaurant and banquet rooms and outdoor speakers. 100V speakers are available both as built-in or for wall mounting.

Remember that both speaker and amplifier must be approved for 70/100V operation and are not normally used in Hi-Fi contexts.