Sonite Rise - Can’t Hit Targets

@Jackhammer, I haven't carefully followed this thread, but do you have your feedback test results for each ear for whatever HAs you're concerned about feedback? The output of such a test is usually your gain curves for soft, medium, and loud sounds plotted relative to the available maximum stable gain. Usually, the maximum gain achievable at each frequency is also shown (gain limit). The areas between the maximum stable gain and the gain limit are usually where feedback will occur. And paradoxically, the most gain is usually applied to soft sounds because of hearing loss and compression, so it's the gain applied to soft sounds that usually intrudes on (or comes too close to) feedback regions when you're having feedback problems.

The nice thing about feedback test results is that they are not theoretical. They show the real-world effect of your vent size and how the molds fit in your ear canals. So, if you asked your audi for your feedback test results and posted them here, a lot more would be apparent. Apologies if I haven't used the right terms, but I hope I've conveyed the importance of your feedback test results (what happens when the audi apologizes for making a loud noise in your ears!).

I will ask when I go back on 9/22.

@Jackhammer said:

I did have the annoying floor noise.

So, soft noise reduction/expansion in fitting software is available for you to try. You shouldn't go into weaker receiver without trying it or trying receivers from another manufacturers (so another HAs unfortunately).

@Jackhammer said:

BTW, my fitter reduced high frequency gain hoping it would reduce floor noise. Did not work although hard to compare floor noise with my original bass domes.

I thought floor noise is rather low frequency humming. I don't have much experience here, but reducing high frequencies reduces benefits from HAs...

@Jackhammer said:

I reported a 3mm vent. I decided to experiment by blocking the vent. I discovered the the vent on my right HA was very small, definitely <1mm. So, why would I have 3mm vent on left ear and <1mm on right ear?

I don't know, your audiograms seems similar in both ears, but indeed, right ear requires a bit more occluded fitting, but as much as 2 mm difference? Uhm.

Good idea with blocking. However, 3mm is very hard to block effectively. I used a tightly twisted clean disposable tissue papers (like Kleenex in your country). There is my initial trying in home, and that was AOV vent according to my audiogram:

I am calling it floor noise because people here have suggested that is what it is plus it is a known issue with 9050. It is static, similar to bacon frying in a pan. Fitter was just guessing when I told her about the noise. She said let’s reduce gain on higher frequencies….it won’t affect clarity and maybe it will help reduce noise.

Re vents, a 1/8” drill bit easily fits into left vent. Right vent is very small, maybe pin size.

I just used the drill bit to determine size.

Is the inconsistent feedback connected to the sound environment or jaw movement? It's possible the impression was and/or the mold is not good. I would get a new impression of there are any significant issues with a mold. Some of the Costco staff do not seem experienced enough with impressions and molds. Costco needs to work on improving this and may need to adopt 3D scanning if it can't train the staff more with the current approach.