Has Active Noise Cancellation (Anc)
JBL Live 660NC
✓
Adidas RPT 02 Sol ✗
Active noise cancellation uses more advanced technology to actively counter noise. How it works, it listens to the sound pattern outside and inside the earbud and then inverts the soundwaves to cancel it out. In simple terms, it's like taking +1 outside (noise from your surrounding) and adding -1 inside (counter sound within the device) to make zero hence "diluting" the noise.
JBL Live 660NC allow you to listen at lower volume levels, causing less ear fatigue as you don't have to crank up the volume to overcome background noise.
Has Passive Noise Reduction
JBL Live 660NC
✓
Adidas RPT 02 Sol ✗
Passive Noise Cancellation uses well-designed ear cups to seal out unwanted noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out.
The JBL Live 660NC sits tightly in place, creating an acoustic seal that reduces background noise and prevents your music from leaking out.
Lowest Frequency
JBL Live 660NC
16Hz
Adidas RPT 02 Sol 20Hz
Low-frequency response measures if and how well an audio component reproduces low audible frequencies and if it makes any changes to the signal while at it. JBL Live 660NC's lowest frequency is at 16Hz, the lower the low-frequency response, the stronger and juicier the bass.
Adidas RPT 02 Sol's lowest frequency is at 20Hz, this means that
Adidas RPT 02 Sol got a juicier bass than the JBL Live 660NC
Highest Frequency
JBL Live 660NC
20000Hz
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 on the way through. JBL Live 660NC's highest frequency is at 20000Hz, the higher the high-frequency response, the clearer and crispier the treble.
Adidas RPT 02 Sol's highest frequency is at 20000Hz, this implies that
both devices produce equal treble
Sound Pressure Level
JBL Live 660NC
97dB/mW
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 a way of getting 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, JBL Live 660NC's measurement is 97dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
Adidas RPT 02 Sol's sound pressure level measurement is 105dB/mW.
Driver Unit Size
JBL Live 660NC
40mm
Adidas RPT 02 Sol 45mm
The driver unit is basically a mini speaker that produces sound in the device, its size dictates the loudness of the headphone. JBL Live 660NC driver unit is 40mm in diameter, bigger drivers are more powerful and can produce better bass.
Adidas RPT 02 Sol driver unit is 45mm in diameter,
making them have a larger driver unit than that of JBL Live 660NC by 5mm
, many people have a misconception that driver units of a bigger size automatically produce better sound quality.
However, large drivers usually have difficulty reproducing high frequencies so yeah, larger drivers can generate louder sound, but this does not mean that they produce better sound.
Impedance
JBL Live 660NC
32Ohms
Adidas RPT 02 Sol 32Ohms
Impedance is 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 conductor is measured in ohms. JBL Live 660NC's impedance is 32Ohms, the lower the impedance, the easier it is to get higher volume and requires less power.
Adidas RPT 02 Sol's impedance is 32Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.
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