High-End horn driver for the high-frequency range above 5000 Hz. The extremely light aluminium titanium alloy diaphragm shows, apart from a very dynamic pulse response, a very linear frequency response. The powerful strontium-ferrite magnet and the 16 mm voice-coil are a guarantee for highest efficiency.
| Nominal impedance Z | 8 Ohm |
|---|---|
| Frequency response | 2200–35000 Hz |
| Mean sound pressure level | 100 dB (1 W/1 m) |
| Opening angle (-6 dB) | 67°/8000 Hz |
| Resonance frequency fs | 6000 Hz |
| Magnetic induction | 1.6 T |
| Magnetic flux | 200 µWb |
| Height of front pole-plate | 2.5 mm |
| Voice coil diameter | 16 mm |
| Net weight | 1.3 kg |
| D.C. resistance Rdc | 6.9 Ohm |
| Inductance of the voice coil L | 0.17 mH |
| Connections | Spring terminals |
| Peak power handling with high pass | 200 W (12 dB/Okt.; 7500 Hz) |
| Nominal power handling with high pass | 150 W (12 dB/Okt.; 7500 Hz) |
It is well-known that there are two types of loudspeakers: hi-fi speakers that produce the most accurate, unaltered sound possible, and disco or musician's speakers, where the top volume level is of the utmost importance. These volume levels are normally only possible with horns but these often cause coloration of the sound. The MONITOR 890 MK IIIwas designed specifically to combine the best of both worlds. In the mid-range, we use a driver & horn unit which is so dynamic and produces such undistorted music, that many a horn-disparager has had to admit that this is simply unbelievably "different". Two excellent quality woofers, TIW 300 - 8 Ohm, mounted in the 180 litre vented cabinet, generate a bass sound pressure that is physically tangible, as you have experienced with concert speakers. Combined with the first-rate TL 16 H - 8 Ohm high-range horn, we have created a loudspeaker system that breaks down the previously unbridgeable barrier between the hi-fi and the professional speaker.
The output levels of the mid-range driver and tweeter can be adjusted to the requirements of the locale using output controls. We recommend, initially at least, the following level settings: tweeter: -4 dB; mid-range: -4 dB. These can, of course, be adapted to suit the specific acoustics in the room and personal preferences.
Thanks to the added impedance linearising unit in the crossover unit, the Monitor 890 MK III is now even better suited to use with critical amplifiers (e.g. tube amplifiers).
