Koss KSC75 (on-ear headphones) [2]

Measurement

[1. Appearance ]

Koss KSC 75 on-ear clip headphone

USD 15$

Koss KSC75, one of the cheapest clip headphone in the market, features a 2 µm titanium coating on its 45 mm diaphragms.

According to Koss Corporation, this titanium coating increased rigidity, minimized mechanical distortion, and exceedingly accurate sound quality and reproduction. 

Also oxygen-free copper voice coils improve signal transmission and conduction for cleaner, clearer sound.

Koss KSC75 measurement

[2. Frequency Response ]

Check my Measurement Procedures first.

Raw (5 plots averaged)

Diffuse Field Target Compensated 

• ISO 11904-2

Olive Welti Target Compensated 

• AES 8994

CSD

• Olive Welti Target Compensated 

[3. Phase ]

Minimum Phase

[4. Square Wave ]

• 300Hz

• 30Hz

[5. Harmonic Distortions ]

• 94dBSPL @ 500Hz

[6. Impedance ]

• DC ohm

• Black: impedance magnitude

• Green: electrical phase 

[7. Effect of ear cushion ]

KSC75 comes with pair of black soft foam ear cushion,

 which improve the bass response and the better fit.

Uncompensated

• Black: normal

• orange: without foam cushion

Difference

• Orange: without foam cushion

• Black: with foam cushion