Custom made earplugs:
Material:
The material used to produce the floatable earplugs is an addition-vulcanising silicone with a stable thixotropic consistency. And is highly physiologically friendly. Here are some more details:
Total processing time:................90 ± 15 seconds
Setting time: ..............................4 mins ± 30 seconds
Final hardness:..........................40 ± 3 Shore A
Deformation under pressure:......7.5 ± 0.5%
Recovery from deformation:........> 99.8%
Linear dimensional change:........< 0.2%
Consistency:...............................Putty – type 0
The mixing and processing time refer to a room temperature of 23°C ± 1°C and a relative air humidity of 50%, being processed in an aural cavity of 37°C ± 1°C. Lower temperatures significantly prolong the processing time and higher temperatures accelerate the processing time.
Custom Earplug attenuation:
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250Hz |
500Hz |
1kHz |
2kHz |
4kHz |
6kHz |
8kHz |
Mean attenuation dB SPL – Ref: 20mPa |
31.1 |
33.4 |
35.7 |
36.2 |
39.8 |
43.9 |
42.2 |
This is equivalent to a Class 5 hearing protection. Note that SNR and NRR are not sufficient measures as they are primarily designed for non-custom ear defenders. It is obvious to think of the different qualities each person experiences with custom made hearing protection, as all ears are different. Many laboratories will test a large number of custom made ear defenders to find a generalized attenuation level.
Audio earplugs:
Skull Candy earphone transducers:
- High quality steel / Neodymium / Boron driver unit
- Metal in-ear design
- Gold plated 3.5mm stereo jack
- 3 sizes of interchangeable ear pads for traditional earphone use
- Frequency response: 15hz – 24kHz
- Rated input: 3mW
- Maximum input: 10mW
- Impedance: 32Ω
- Sensitivity: 104dB/1mW (SPL @ 1kHz)
- Driver diameter: 10mm
- Sound film thickness: 6mm
- Audio connector: 3.5mm stereo jack
- Connecting cable length: 1.15m
N.B. Using a unique manufacturing technique, I can mould your own special pair of earphones inside your own custom made earplugs! Perfect sound in perfect comfort - PERFECT!
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