Connevans CRM-220 Fast Track Manual - page 4
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CRM-220
CRM-220
CRM-220
CRM-220
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Version 2.0 CRM-220 Fastrack Guide
CRM-220 Fastrack Guide Version 2.0
Using a CRM–220
This fast track guide is designed to get you started
with your new CRM-220 quickly and easily.
There are several other useful accessories to help
gain better use of your CRM–220, such as a
conference table microphone or tv.
The use of these are explained in the main
CRM-220 User Guide & Reference Manual.
In an ideal world, setting the volume controls (and the treble and bass tone) would
be done with the help of an audiologist, however it is also possible for a good
listener to set their own listening preference.
The objective is
very simply that the sound heard
at a distance through the CRM-
220 should be similar or louder to
the sound heard from the hearing
aid on its own at close range in a
quiet room.
Volume controls
The CRM-220 volume should be set by a comparison method.
1
Initially establish a satisfactory
listening level with the hearing
aid(s) alone, at arm’s length
from somebody talking to you.
2
Turn on the CRM-220 system,
give the transmitter to your
helper and ask them to walk
away whilst talking into the
microphone at 150mm (the
length of a biro) from the mouth.
3
You should now listen to the hearing aids but this time through the CRM-220
receiver. Use a twiddling stick to adjust the transmitter volume control (Tx) to
match, or be slightly louder than, the original listening level through the
hearing aid alone.
Be careful not to overbalance hearing aids or cochlear implant processors that have
Wide Dynamic Range Compression, although the aid will adjust itself there will be
an increased level of background noise and loss of quality. Always adjust by turning
the volume upwards, if necessary turn the volume down and slowly back up again.
Tone controls
Setting the tone controls is straightforward but most users do not need to adjust
them at this stage.
Part 4
Setting the volume
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Pages 29 & 40 – CRM-220 User Guide
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