Unitron Moxi 2 - Choosing Couplings for Standard xReceivers

6
Choosing the correct coupling for standard xReceivers
Determine the correct dome size based on your otoscopic examination of the ear canal.
Selectthedometypebasedon the audiometric requirements and tting ranges shown on this page.
Allowthedome to t comfortably in the ear canal.
Open dome
Choose for:
•Instant t
•Open t
Considerations:
•Occlusion free
Closed dome
Choose for:
•Instant t
•Semi-occluded t
Considerations:
•Extended tting
range over open
dome
•Some occlusion
Power dome
Choose for:
•Instant t
•Occluded t
Considerations:
•Extended low-
frequency response
•Occlusion
Sleeve mold
cShell
Choose for:
•Custom t
•IntelliVent technology
Considerations:
•Comfort
•Possible occlusion
•Impression required
Poor t
(dome too
small)
Good t
250 500 1000 2000 4000 8000
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
Hz
Open dome
Closed dome
Power dome/sleeve mold