Oticon Semper BTE 105

Oticon Semper BTE 105 accessories & compatibility guide | Japebo

If you’re looking for Oticon Semper BTE 105 accessories, the key is choosing parts that match the exact BTE (behind-the-ear) setup you have. Even within Oticon hearing aids, accessories like tubing, earhooks, domes, filters and batteries can vary by model and fitting type. This guide explains what typically fits an Oticon Semper BTE 105, how to identify what you need, and how to avoid ordering the wrong parts.

What “Semper BTE 105” means for accessories
Oticon Semper BTE 105 is a classic BTE-style hearing aid where sound travels from the device (behind the ear) to the ear via either:

A thin tube + dome (open fitting), or
A thicker tube + earmould (custom mould), depending on your fitting.

Your accessory choice depends primarily on which of these two setups you use. If you’re unsure, look at what goes into the ear: a soft silicone dome usually means a thin-tube setup; a hard acrylic/silicone mould usually means mould tubing.

Accessory types for Oticon Semper BTE 105 (and what they do)

Tubes (thin tubes or earmould tubes)
Tubing is one of the most common replacement items for BTE hearing aids. Over time it can harden, discolor, loosen, or affect sound quality. The correct tube type depends on whether you use domes or a mould:

Thin tube: used with domes; typically easier to replace and more discreet.
Earmould tube: used with custom moulds; usually thicker and cut to length.

Domes (if you have a thin-tube setup)
Domes affect comfort, retention, and sound (especially bass and occlusion). Common dome styles include:

Open domes: more ventilation, often more natural own-voice; less bass retention.
Closed domes: more bass, less leakage; may feel more “blocked”.
Power domes: maximum seal for more output; can increase occlusion if not fitted correctly.

Domes must match the tube/earpiece connection size used on your Semper BTE 105 fitting. If your current dome clicks on firmly and your new dome feels loose (or won’t attach), it’s likely the wrong coupling size.

Earhooks (for mould users)
If you use an earmould, the earhook (the curved plastic part the tube attaches to) can wear out or crack. A worn earhook can cause feedback (whistling), weak sound, or an insecure fit. Replacing the earhook restores a tight connection between the hearing aid and the tube.

Wax protection (where applicable)
Many BTE fittings place wax protection in the part that sits in the ear (the sound outlet/earpiece). If your Semper BTE 105 fitting includes a wax guard, replacing it can fix issues like weak sound or intermittent audio. If you don’t see a removable filter and you use a mould, wax may instead be managed by cleaning the mould and tubing.

Batteries
Oticon BTE instruments commonly use disposable zinc-air batteries. The correct size depends on the battery compartment in your device (for example size 13 or 675 are common for larger BTEs). To confirm:

Check the number printed on your current battery (e.g., “13” or “675”), or
Check the marking inside the battery door/compartment.

If you get short battery life, ensure the stickers are removed fully, let the battery “air up” for about a minute before inserting, and check that the battery door closes firmly.

How to choose the correct Oticon Semper BTE 105 accessories
Use these quick checks to make sure you’re buying the right parts:

Match your current setup: dome + thin tube vs earmould + thicker tubing/earhook.
Copy the exact connection: the coupling size at the ear end must match (otherwise domes won’t fit securely).
Check left/right (if marked): some thin tubes are side-specific and may be marked L/R.
Use your old part as reference: length, bend, and connector style should look the same.

If you’re between sizes (for example dome sizes), choose based on comfort and retention first—sound tuning can often be adjusted, but a poor seal or uncomfortable fit will always be an issue.

Common problems (and what accessory usually fixes it)

Whistling/feedback: dome too small, tube not seated, cracked earhook, hardened tubing, or poor seal with mould.
Sound is weak or muffled: blocked wax protection (if used), moisture in tubing, tubing that has hardened, or debris in the mould.
Dome keeps falling off in the ear: wrong dome size or wrong coupling/connection type.
It feels uncomfortable/blocked: dome too large or too closed; consider a more open style if appropriate.

When you should double-check compatibility
Because “BTE” covers multiple fittings, it’s worth confirming compatibility if:

You recently changed from a mould to domes (or the other way around)
Your hearing aid was re-tubed or re-fitted by a clinic
You can’t find an exact match to your current tube/dome connection

The safest approach is to compare your existing parts to the product photos/specs before ordering.

Buy Oticon Semper BTE 105 accessories at Japebo
At Japebo you’ll find accessories that help keep your Oticon Semper BTE 105 performing properly—whether you need replacement tubing, domes, earhooks, wax protection, or fresh batteries. Replace wearable parts regularly to maintain comfort, reduce feedback, and keep sound clear.

FAQ – Oticon Semper BTE 105 accessories
How do I know if my Semper BTE 105 uses domes or an earmould?
If the part in your ear is a soft silicone tip, it’s a dome. If it’s a custom-shaped piece (often harder acrylic or thicker silicone) connected by thicker tubing, it’s an earmould.

How often should I change domes or tubing?
Domes are typically replaced regularly for hygiene and best fit (often every few weeks depending on use). Tubing is replaced when it hardens, discolors, loses flexibility, or affects sound—many users replace it every few months.

My hearing aid whistles after I changed the dome—what happened?
Most commonly the dome is too small, not fully attached, or the style is too open for your settings. Switching to the correct size/style usually solves it.

Which battery size does Oticon Semper BTE 105 use?
Check the number printed on your current battery or inside the battery compartment. Oticon BTE models often use size 13 or 675, but you should confirm on your device before buying.

Can I use generic accessories?
Only if the connection and dimensions match your Oticon Semper BTE 105 fitting. For parts like tubes, domes, earhooks and wax protection, exact compatibility matters for secure fit and correct acoustics.