These are close to as good as you can get... Tannoy CMS601 Ceiling Speaker (or CV-6 same speaker pretty-much) The Tannoy CMS601 DC BM is a full bandwidth; high power and high sensitivity ceiling monitor system; a compact unit that is specifically designed for applications requiring the combination of premium sonic quality for music and speech reinforcement and exceptional reliability. The design comprises a 165mm (6.50") transducer mounted in a vented, injection moulded, paintable front baffle manufactured from UV/weather resistant UL94V-0 ABS material. Spring loaded self-aligning clamps make for quick and easy installation, while all models are also supplied with two tile support rails and one C-ring included in the package. The CMS601 is equipped with a low insertion loss 60W line transformer easily configurable to the following settings via front baffle mounted rotary tapping switch: 70V systems: 60W / 30W / 15W / 7.5W / OFF & low Impedance operation 100V systems: 60W / 30W / 15W / OFF & low Impedance operation Delivery could be possible. I have 1 left. Price is each.