The R45 is a classic design Ribbon used on our R645v3 model.  It has thousands of fans around the world.

The R45 is designed as a top mount Ribbon for use above the cabinet housing the midbasses.  Good efficiency, wide dispersion and superb soundstaging are the basis for the R45s classic status.

Simply put, nothing gets out of the way of the music like an R45 system.

For speaker kit builders, a simple 6dB (single capacitor) crossover and good quality midbasses are pretty much the only ingredients necessary to assure superbly musical results.  Aim for a crossover of around 1kHz and when placing the speakers, try and give them as much air as possible.  Very high end audio in a stereo or home theater system can be achieved with very modest effort and investment.