[Elecraft] FS: New CM500 headset

[David Woolley]

Are you sure of those figures?  30dB is normally only considered mild 
loss.  15dB is in the normal range.

I have at least 40dB. across the spectrum, in one ear, and 15dB at 
500Hz, degrading to 70dB at 8kHz, in the other, and I'm only classed as 
having a moderate loss.  These figures are a few years old, so the 
current ones are marginally worse.

If you have severe enough loss to need full ear moulds, I think all 
modern aids have various options to directly feed the aid with, at least 
mono, audio, and some headsets will naturally work with aids that can be 
set to an induction loop setting.

Typical options for full stereo, are blank headsets, that just create an 
induction field, ear hooks that hook over the ear and create an 
induction field, and direct audio input shoes that plug into over the 
ear aids, and allow a copper connection to the aid.

For most aids you can get a bluetooth adapter, that you wear on a, 
conductive, neck loop.  This is generally mono.  You can typically 
provide a copper audio feed to these, in which case there is no 
bluetooth (the near field link uses a different protocol, and at HF, not 
SHF), or you can remote bluetooth adapters, which have low latency, as 
well as the normal bluetooth adapters, with their high latency.

The Phonak brand name for this feature is ComPilot.  My aids are Oticon, 
for which it is ConnectLine.

I think the open fit aids, used by people with, typical, age related, 
high frequency loss may be more of a challenge, as they are designed to 
pass the low frequencies directly and only amplify the high ones.

-- 
David Woolley
Owner K2 06123

On 27/11/2018 01:20, Edward R Cole wrote:

 > Firstly, I have extreme hearing loss.  Without my Phonac-Silvia hearing
 > aids the world it very quiet.  I have something like 30-dB loss in both
 > ears so not wearing