When looking at the RVA-90020-NXX series of speakers from Knowles you may wonder what all the different suffix numbers mean.
According to the manufacturer the first digit signifies the accessories incorporated into the device and the second digit indicates the size and orientation of the cable. They break down as follows.
First Digit
1 - Indicates that it is equipped with a concha lock.
2 - Indicates it is equipped with a concha lock and a wind shield.
3 - Indicates it has neither a concha lock nor a wind shield.
Second Digit
1 - Size 0, small, left
2 - Size 0, small, right
3 - Size 1, medium, left
4 - Size 1, medium, right
5 - Size 2, large, left
6 - Size 2, large right
7 - Size 3, x-large, left
8 - Size 3, x-large, right
9 - Size 4, xx-large, left
0 - Size 4, xx-large, right
Applicable part numbers
RVA-90020-N11
RVA-90020-N12
RVA-90020-N13
RVA-90020-N14
RVA-90020-N15
RVA-90020-N16
RVA-90020-N17
RVA-90020-N18
RVA-90020-N21
RVA-90020-N22
RVA-90020-N23
RVA-90020-N24
RVA-90020-N25
RVA-90020-N26
RVA-90020-N27
RVA-90020-N28
RVA-90020-N29
RVA-90020-N30
RVA-90020-N31
RVA-90020-N32
RVA-90020-N33
RVA-90020-N34
RVA-90020-N35
RVA-90020-N36
RVA-90020-N37
RVA-90020-N38