Comparison and Difference Between
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Brand and Model Specifications
Information about the brand, model release date.
Manufacturer | Dali Speakers | Klipsch |
Model | Opticon 2 | R-51M |
Photo | ![]() |
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Release Date | 2016 | 2018 |
HifiSpecs Rating | ||
Amazon Rating | ||
Price |
Technical Specs
Technical characteristics of the speakers.
Amplification Type | Passive | Passive |
Crossover Type | 2-Way | 2-Way |
Enclosure type | Bass Reflex | Bass Reflex |
Frequency Range (+/-3 dB)[Hz] | 59 - 27000 | 62 - 21000 |
Frequency Range (-6dB)[Hz] | - | 62 - 21000 |
Maximum SPL [dB] | 107 | 108 |
Sensitivity (2,83 V/1 m)[dB] | 87 | 93 |
Nominal Impedance (Ohms) | 4 | 8 |
THD (Total Harmonic Distortion) | - | 0.8% |
Recommended Amplifier Power [W] | 30-150 | 75-340 |
Crossover Frequency [Hz] | 2000 | 1660 |
Bass Reflex Tuning Frequency [Hz] | 46.5 | N/A |
Driver Units | Tweeter: 1 x 28 mm soft dome |
Tweeter: 1″ Aluminum LTS |
Connectivity | Wired | Wired |
Inputs | Single Wire | Single Wire |
Outputs | - | N/A |
Magnetic Shielding | No | No |
Placements and Distances
Where and how to put them.
Form Factor | Shelf, Stand | Shelf, Stand |
Distance from Wall [cm] | 10 - 80 | 15 |
Dimensions and Weight
Physical characteristics of the speakers (without stands).
Length | ~7.8 in ~198.12 mm ~19.81 cm |
~8.5 in ~215.9 mm ~21.59 cm |
Width | ~11.9 in ~302.26 mm ~30.23 cm |
~7 in ~177.8 mm ~17.78 cm |
Height | ~14 in ~355.6 mm ~35.56 cm |
~13.3 in ~337.82 mm ~33.78 cm |
Weight (Single Speaker) | ~17.2 lb ~7801.79 g ~7.8 kg |
~10.7 lb ~4853.44 g ~4.85 kg |
Shipping Weight | ~ lb ~ |