Has Active Noise Cancellation (Anc)
JBL Live 660NC
✓
JBL Tune 720BT ✗
Active noise cancellation uses more advanced technology to reduce unwanted ambient sounds. How it works, it detects and analyzes 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 0 resulting in a reduced level of 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
✓
JBL Tune 720BT ✓
Passive Noise Cancellation uses well-designed ear cups to seal out environment noise. This is used for both in-ear earphones and over-ear headphones where the headphone itself will keep surrounding noise out.
The JBL Tune 720BT sits tightly in place, creating an acoustic seal that reduces background noise and prevents your music from leaking out.
Both of these devices have passive noise reduction which means that also the JBL Live 660NC isolates you from ambient noise instead of actively using technology to cancel it out.
Lowest Frequency
JBL Live 660NC
16Hz
JBL Tune 720BT 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 on the way through. JBL Tune 720BT's lowest frequency is at 20Hz, the lower the low-frequency response, the stronger and juicier the bass.
JBL Live 660NC's lowest frequency is at 16Hz, this implies that
JBL Tune 720BT got a juicier bass than the JBL Live 660NC
Highest Frequency
JBL Live 660NC
20,000Hz
JBL Tune 720BT 20,000Hz
High frequency response measures if and how well an audio component reproduces high audible frequencies and if it makes any changes to the signal while at it. JBL Tune 720BT's highest frequency is at 20,000Hz, the higher the high-frequency response, the clearer and crispier the treble.
JBL Live 660NC's highest frequency is at 20,000Hz, this implies that
both devices produce equal treble
Sound Pressure Level
JBL Live 660NC
97dB/mW
JBL Tune 720BT 103dB/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, JBL Tune 720BT's measurement is 103dB/mW. Devices with a higher sound pressure level are generally louder when supplied with any given audio source.
JBL Live 660NC's sound pressure level measurement is 97dB/mW.
Driver Unit Size
JBL Live 660NC
40mm
JBL Tune 720BT 40mm
The driver unit is basically a mini speaker that produces sound in the device, its size dictates the loudness of the headphone. JBL Tune 720BT driver unit is 40mm in diameter, bigger drivers are more powerful and can produce better bass.
JBL Live 660NC driver unit is 40mm in diameter,
making both JBL Live 660NC, and JBL Tune 720BT similar in how loud their sound gets
, 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 yes, larger drivers can generate louder sound, but this does not mean that they deliver better sound.
Impedance
JBL Live 660NC
32Ohms
JBL Tune 720BT 32Ohms
Defined as the device's resistance to the electromagnetic current, when electricity flows through a wire, it faces electrical resistance that counters the flow of current. The resistance of a wire is measured in ohms. JBL Tune 720BT's impedance is 32Ohms, the lower the impedance, the easier it is to get higher volume and requires less power.
JBL Live 660NC's impedance is 32Ohms. The impedance of earbuds is the electrical resistance of the driver unit present on the inside.
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