Ferrule Dimensions:
Outside Diameter - 2.13 mm (0.084")
Inside Diameter - 2.03 mm (0.080")
Length - 2.44 mm (0.096")
The function of the damper is to optimize the acoustic impedance characteristics of the earmold tubing employed with postauricular and eyeglass-type hearing aids, thereby attenuating to a great extent the resonant peaks which are almost always present in the response of ear-level aids.
Judicious use of these superior dampers will yield the following results:
• Smoothing of the hearing aid's frequency response.
• Reduction of the hearing aid's overall output level (especially useful for those cases where the hearing aid's MPO exceeds the patient's tolerance level).
• A relative increase in the high-frequency response.
• Increased listening comfort and, in many instances, enhanced speech intelligibility due to the elimination of the sharp mid-frequency peaks which would otherwise mask the critical high-frequency components of the speech signal.
Individual Dampers:
- 680 Ohms/White •2394-68
- 1000 Ohms/Brown •2394-100
- 1500 Ohms/Green •2394-150
- 2200 Ohms/Red•2394-220
- 4700 Ohms/Yellow •2394-470
- Dampers are supplied 10 to a package, one color per package.
