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Dali Euphonia RS3 Loudspeakers

What is the highest frequency you can hear? The common belief is that the range of human hearing is from 20 Hertz (cycles per second) to 20,000 Hz. Young people can often hear frequencies at or near 20 kHz, but as we age and our hearing is damaged by years of loud music, gunfire (hopefully from sporting arms), civilization, and possibly vocational noise, our hearing acuity decreases in the upper frequencies. This is not usually a problem for the purpose of listening to music, because as frequency increases, the amount of musical content decreases. Above about 10 kHz, only the upper order harmonics of fundamental notes remain. Nevertheless, these harmonics are critical to hearing the character of the instrument that created the original sound.

Otologists use a steady tone at the frequency of interest to test your hearing. They increase the volume for you and you signal when you can hear the tone. This may be an adequate test of your ability to hear speech, music and other natural sounds at a given frequency, but I suggest that you can hear far higher frequencies than the doctor’s graph of your hearing might indicate. In other words, a hearing test is only partly valid.

What is the frequency of a drum stick hitting the rim of a snare drum? Or a guitar pick touching a string? Or, for that matter, the leading edge of any sound. These impulse sounds do not have a frequency because they are instantaneous. They happen NOW and are gone. There is no note, little tone, and no significant harmonic trail afterwards. If you could put enough of these sounds together to be able to measure on a cycles-per-second scale, the number would be very high. Certainly there could be over 20,000 of these impulses per second, and possibly 50,000 or more. Can you hear the tapping of a stick on a triangle? You bet you can!

images courtesy of dali-speakers.com

Review continued on 10Audio.com next….

Euphonia RS3 Specs:

Frequency range (+/- 3dB) [Hz]: 64,0 – 28.000,0
Sensitivity (2,83 V/1 m) [dB]: 87,0
Nominal impedance [ohms]: 4
Maximum SPL [dB]: 108,0
Recommended amplifier power [Watts]: 50,0 – 250,0
Crossover frequencies: 2.600 / (15.000)
Crossover principles: 2+½-way
Hybrid tweeter module, Super high frequency driver: Ribbon
Hybrid tweeter module, High frequency driver: Soft textile dome
Low frequency driver: Wood fibre cone
Enclosure type: Closed box
Bass reflex tuning frequency [Hz]: 72,5
Connection input(s): Bi-wire
Max loudspeaker dimensions incl. base and grille (HxWxD): 470 X 200 X 203
Loudspeaker weight including base and grille [kg]: 11,0

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