Speaker replacement

[Popopo]

Hi!

I'm looking for a speaker replacement for my QL, I am not looking for a original one at all, but something that if I connect doesn't break out my QL.
Service manual doesn't explain too much (even is wrong cause it is not piezoelec).

Some posts here bet for a 32 ohms one...
Does somebody knows which one could work the same than the original one?
I need it as close as original for another project in process.

Thanks

[Marcel_X]

Hi,

Just unplugged my speaker and mine measures 39.5 Ohms. So fairly close to 40 Ohms.
This document claims that the speaker is 60 Ohms. Which does not sound like a standard value to me.
https://dilwyn.theqlforum.com/sound/QBI ... Sounds.pdf

But your QL should be safe with a 32 or 40 Ohm version. The sound output is buffered by a transistor and another 82 Ohm resistor.
So even if you would short the speaker, the maximum current would be around 55 mA.

Diameter is 23 mm.

[Popopo]

Hi,

Just unplugged my speaker and mine measures 39.5 Ohms. So fairly close to 40 Ohms.
This document claims that the speaker is 60 Ohms. Which does not sound like a standard value to me.
https://dilwyn.theqlforum.com/sound/QBI ... Sounds.pdf

But your QL should be safe with a 32 or 40 Ohm version. The sound output is buffered by a transistor and another 82 Ohm resistor.
So even if you would short the speaker, the maximum current would be around 55 mA.

Diameter is 23 mm.


Screenshot 2025-05-30 at 11.08.18.png

Wauuuu thank you very very much Marcel!
Also for the document, It will be very helpful to me in one of my "trying" related also with the sound that I want to do.
Also another document claimed the same 60 Ohms, but... I don't believe it and you confirmed it. thanks