This is a pair of original Bowers & Wilkins C5 Series 2 Drivers, and the flagship 9.2mm micro driver unit of Earphone DIY Labs. When being correctly used, this driver can well beat most $150 IEMs on offering a very nature and original sound.
We recommend using this driver with the genuine wood or Mini-Piano earphone shells to fully explore its potential.
Know about Bowers & Wilkins C5 Series 2
C5 Series 2 in-ear headphones deliver stunning audio clarity and feature an ingenious adjustable ergonomic design, for a secure fit and a tight acoustic seal.
Features and Specs
See the official spec from Bowers & Wilkins website:
- The impedance – 32 ohm
- CCAW coil
- Drive units 2x ø9.2mm (0.4in) full range
- Impedance 32 ohms
- Frequency range 10Hz to 20kHz
- Distortion (THD) <0.2% (1KHz/1mW)
- Max. input power 3mW
- Sensitivity 115dB/V at 1kHz
Measurement is based on an , a and Win10 PC running oftware.
Frequency Response measurement
Notice the bass, mid and treble are perfectly balanced. There is a slightly boost at 3Khz an producing a bright and clear vocal.
The Impulse Response measurement
CSD (Cumulative Spectral Decay), i.e., the waterfall diagram.
Notice the decay rate at 500hz-20Khz is very consistent, meaning less interference among bass, mid and treble.
Notice the consistency among all the bands