Can I choose my own receiver power?

You should not. The power was chosen to match a fitting and the device was programmed around it, so fitting a different one changes what the device delivers relative to what its programming assumes. Replacing a failed receiver means matching the same power, the same length and the same side. If more output is needed, that is a reprogramming appointment.

Why does my own voice sound boomy?

That is occlusion. It happens when a dome seals the canal enough to trap the low frequency energy your own voice puts into it through bone conduction. It is the standard trade-off for a closed or power dome. Moving to a more vented style usually resolves it at the cost of some available amplification, so it is a genuine trade rather than a fault.

Are domes interchangeable between brands?

No. The fitting that attaches a dome to a receiver differs between manufacturers and frequently between model generations from the same manufacturer. A dome that nearly fits does not seat properly, which changes both the acoustics and the security of the fit. Match the part to your specific device rather than to a size in millimetres.

What size dome do I need?

The one that is comfortable and stays in place, which cannot be worked out from a chart. Most people arrive at it by trying two or three, and many need different sizes in the two ears because ear canals are not symmetrical. If a device was fitted professionally, the size chosen at that fitting is the one to reorder.

When is a custom earmould the better answer?

When a power dome still does not deliver enough amplification, or when a device feeds back constantly despite a correctly seated dome. A mould is taken from an impression of your ear and seals in a way no stock dome can. That is a fitting appointment with a professional rather than an online purchase.

Which dome style and receiver power

Quick answer

Dome style is chosen by how much low frequency hearing is being kept, and receiver power by how much output a fitting needs. Both are trade conventions rather than a fitting, and dome sizes and receiver labels are manufacturer specific and not interchangeable between brands.

Dome and receiver

Trade convention This answer comes from a convention taught everywhere in the clinic and the trade, and published as a standard by nobody. It is useful, and it is not a standard.

This returns the style that usually suits a pattern. The actual receiver is selected against a full audiogram in the manufacturer fitting software, and the actual dome size is whichever is comfortable and stays put.

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Equipment this answer points to

Replacement domes

lyehip

Tulip domes for Resound and Jabra, 14 count

$7.99

A tulip dome sits between open and closed: more retention and more usable gain than an open dome, less occlusion than a sealed one. The usual answer when neither extreme is working.

Check before buying: Compatible parts, not made by GN Resound or Jabra.

Best for: Jabra Enhance and GN Resound wearers who find open domes too thin and closed domes too blocked.

Check price on Amazon

Replacement domes

Audisaisi

Open domes for Phonak, 9 mm, 20 count

$9.99 Published specs

Open domes vent the ear canal the most, which keeps the natural low-frequency sound and the most normal sounding own voice. The right choice when hearing in the low frequencies is good and the loss is concentrated higher up.

Check before buying: Compatible parts, not made by Phonak. Dome fittings differ between manufacturers and even between model generations, so check the fitting on the part you are replacing before ordering.

Best for: Phonak Audeo Marvel, Paradise and Lumity wearers with high-frequency loss.

Check price on Amazon

Replacement domes

Audisaisi

Vented domes for Phonak, 7.5 mm small, 20 count

$9.99 Published specs

The small size in the Vented 4.0 fitting, for a canal that an 8 or 9 millimetre dome will not sit in comfortably.

Check before buying: Compatible parts, not made by Phonak.

Best for: A narrow canal, or the ear that always feels tighter than the other one.

Check price on Amazon

Replacement domes

KH HAIKE

Vented domes for Phonak, 11 mm large, 20 count

$9.99 Published specs

The large end of the Phonak vented range, for a canal where a medium dome works loose during the day.

Check before buying: Compatible parts, not made by Phonak.

Best for: A dome that keeps falling out or working its way loose.

Check price on Amazon

Common questions

Can I choose my own receiver power?: You should not. The power was chosen to match a fitting and the device was programmed around it, so fitting a different one changes what the device delivers relative to what its programming assumes. Replacing a failed receiver means matching the same power, the same length and the same side. If more output is needed, that is a reprogramming appointment.
Why does my own voice sound boomy?: That is occlusion. It happens when a dome seals the canal enough to trap the low frequency energy your own voice puts into it through bone conduction. It is the standard trade-off for a closed or power dome. Moving to a more vented style usually resolves it at the cost of some available amplification, so it is a genuine trade rather than a fault.
Are domes interchangeable between brands?: No. The fitting that attaches a dome to a receiver differs between manufacturers and frequently between model generations from the same manufacturer. A dome that nearly fits does not seat properly, which changes both the acoustics and the security of the fit. Match the part to your specific device rather than to a size in millimetres.
What size dome do I need?: The one that is comfortable and stays in place, which cannot be worked out from a chart. Most people arrive at it by trying two or three, and many need different sizes in the two ears because ear canals are not symmetrical. If a device was fitted professionally, the size chosen at that fitting is the one to reorder.
When is a custom earmould the better answer?: When a power dome still does not deliver enough amplification, or when a device feeds back constantly despite a correctly seated dome. A mould is taken from an impression of your ear and seals in a way no stock dome can. That is a fitting appointment with a professional rather than an online purchase.

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