KLH Pro 21 Bookshelf speakers

The two-way KLH Pro 21 has a bass reflex port located on the rear panel. The diameter of the low-frequency driver with a polypropylene cone is 163 mm, the diameter of the dome of the tweeter is 22 mm. The recommended power range of the amplifier is 5-120 W, there is a magnetic protection. Dimensions: 225x388x222 mm. KLH Pro 21 belongs to the category of systems with a peculiar sound. We emphasize that by the originality of a system that has "its own" voice, we mean the presence of pronounced individual features in the sound, which, of course, are closer to advantages than to disadvantages. The nature of the sound and the change in sensitivity in the vocal region at frequencies of 1-3 kHz coincides with the increased sensitivity of our hearing, resembling curves of equal loudness. "This rise is not very scary: from 1 to 2 kHz - only 8 dB, but it still cannot be neglected, after all, this corresponds to an almost twofold increase in volume.The results of an expert assessment (subjective impression from listening to music programs of various genres) indicate that such a sound definitely attracts with charming liveliness.Someone, however, noted that the vocals of the glorious ABBA (Dancing Queen, Fernando) are dry , someone felt the loss of violin charm on Grieg's suites... But in general, many people liked the sound, and in the broadest sense, and not in individual aspects, and the controversy here should be attributed to the area of individual predilections. in terms of system quality, the loudspeakers meet the high requirements of Hi-Fi in all their parameters. Sensitivity (89 dB) and uniformity of the acoustic field are high. The average value of the input resistance is about 11 ohms, the nominal value is 6 ohms (8 ohms according to the passport). The bass reflex tuning frequency is 55 Hz, the crossover frequency is 2.8 kHz.