I am looking for a small speaker to use a in a small wearable device. The speaker can be 4ohm or 8ohm and a maximum of 3 watts, I need it to be used with a DFPlayer Mini, which has a built-in amplifier and can support up to a 3w speaker.
I have some speakers myself, but they are not that loud to be honest.
I have tried the following:
The Iphone XR Loudspeaker was the best in terms of volume and quality, however, it is wasn't that high, and because of the mounting plastic, it is quite big. I tried removing the mounting plastic but then it messed with the sound.
For more info, I am using maximum volume of 30 in DFPlayer Mini, I am using 5v directly from a powersupply on a Mega 2560 for my testing/development. And the EQ is set to Normal in the DFPlayer Library.
Any help is appreaciated.
Offtopic: In a few days I will receive a 70mmx40mm (enourmous for my device) speaker that is 4ohm 3watts to test with the DFPlayer to see what would be the highest volume the on-board amplifier can do.
@Paul_KD7HB haven't thought about checking FM Talkies, just checked now and I didn't seem to find the actual speaker component, just the devices themselves.
@LarryD I have tested that device, "sourcing map 1.5W 8 Ohm Mini DIY Speaker Replacement Loudspeaker 20mmx30mm". This one that I tested is the same build but a bit bigger and the audio quality is poor and volume low, all things considered. The iphone speaker is 1.5x the size of that speaker and is many times better.
The actual volume you get out of a speaker depends on how it is mounted. A raw speaker will never sound very loud, you need it mounting in a way where the mount acts as a baffle. That is it makes the air go a long way when it travels from the front to the back of the speaker.
I've noticed this is my testing. The speaker will be mounted either against the wall of the shell (think about the shell of a watch) or on top of the pcb. I have done a bit of testing myself, and it wasn't that great. I've noticed with the "1. RS PRO 8Ohm 1Watt Miniature Speaker" that is I push it against a desk it is extremely loud.
However, other speakers that I tested sound great with or without being mounted, and it makes no difference actually. If you have any ideas on how I can mount the speaker in the shell to improve the audio effect, please let me know.
Offtopic, but here is the iphone XR Speaker, if anyone has any idea on how I could "chop" parts off to make it smaller, go ahead. Already tried chopping one and only having the metal part (removed whole plastic shell), it wasn't a good idea as the sound highly decreased in quality.
Edit: Just to mention, the speaker of the Iphone sounds great, has a nice volume and does fit in my enclosure, however I was looking to have something smaller if possible.
Yes and a very lot of work went into that to make it sound that good. Most if it involved computer modelling of the acoustic properties of the case and emitter. You can ensure that it is as good as it can get.
I find that very surprising
I would try and seal the back of the speaker inside the shell. Make this as airtight as you can. This sort of thing is known an an infinite baffle.
