Lowest Frequency
Low-frequency response measures if and how well an audio device reproduces low audible frequencies and if it makes any changes to the signal on the way through. Adidas RPT 02 Sol's lowest frequency is at 20Hz, the lower the low-frequency response, the stronger and juicier the bass.
Highest Frequency
Adidas RPT 02 Sol
20000Hz
High frequency response measures if and how well an audio device reproduces high audible frequencies and if it makes any changes to the signal while at it. Adidas RPT 02 Sol's highest frequency is at 20000Hz, the higher the high-frequency response, the clearer and crispier the treble.
Sound Pressure Level
Adidas RPT 02 Sol
105dB/mW
Sound pressure is the average variation in atmospheric pressure caused by the sound, the sound level .i.e how loud something is can be perceived differently by different people so we need to have the means to get an objective measurement of sound level expressed in numerical terms.
The sound pressure level, SPL, is the pressure level of a sound, measured in decibels, dB, Adidas RPT 02 Sol's measurement is 105dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Driver Unit Size
The driver unit is the component that produces sound in the device, its size dictates the loudness of the headphone. Adidas RPT 02 Sol driver unit is 45mm in diameter, bigger drivers are more powerful and can produce better bass.
Impedance
Defined as the device's resistance to the electromagnetic current, when electricity flows through a wire, it experiences electrical resistance that counters the flow of current. The resistance of a wire is measured in ohms. Adidas RPT 02 Sol's impedance is 32Ohms, the lower the impedance, the easier it is to get higher volume and requires less power.
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