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-51PM |
| Photo |  |
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| Release Date | 2016 | 2019 |
| HifiSpecs Rating | ||
| Amazon Rating | ||
| Price |
Technical Specs
Technical characteristics of the speakers.
| Amplification Type | Passive | Active |
| Crossover Type | 2-Way | 2-Way |
| Enclosure type | Bass Reflex | Bass Reflex |
| Frequency Range (+/-3 dB)[Hz] | 59 - 27000 | 68 - 21000 |
| Frequency Range (-6dB)[Hz] | - | 68 - 21000 |
| Maximum SPL [dB] | 107 | 107 |
| Sensitivity (2,83 V/1 m)[dB] | 87 | 107 |
| Nominal Impedance (Ohms) | 4 | 8 |
| THD (Total Harmonic Distortion) | - | Less than 0.1% |
| Recommended Amplifier Power [W] | 30-150 | Not required (powered speakers) |
| Crossover Frequency [Hz] | 2000 | 1800 |
| Bass Reflex Tuning Frequency [Hz] | 46.5 | Unknown |
| Driver Units | Tweeter: 1 x 28 mm soft dome |
Tweeter: 1″ Aluminum LTS tweeter with Tractrix Horn |
| Connectivity | Wired | Wireless |
| Inputs | Single Wire | Bluetooth, RCA, USB, Optical, 3.5mm |
| Outputs | - | RCA Sub Out |
| 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 |
~11.5 in ~292.1 mm ~29.21 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 |
~10.6 lb ~4808.08 g ~4.81 kg |
| Shipping Weight | ~ lb ~ |