What speaker to put in a Bluetooth speaker?

Question

Audio

We have a Chinese Bluetooth speaker fake a la jbl charge 2. Inside are two 2-inch 4th broadband speakers with unknown frequency response and two passive plugs at the edges.

Despite the incomplete tightness of the case and the general Chineseness, it sounds pretty good. But I want to do something with it, add some bass or something. I ’ll immediately ask commentators with suggestions to go and throw it in the trash, go for a walk :)

In general, I want to put other speakers of higher quality (there is an assumption that the amp inside is quite good), seal the case and replace the wires with thicker ones with less resistance.

I found several replacement speakers on alishka, I can’t choose. What do you think, which of the proposed options will sound better in such a system?

AIYIMA 2 inch magnetic speakers, 52 mm, 16 poison... - approximately the same option as it is now, only with a neodymium magnet.
GHXAMP 2 inch neodymium full range speaker... - large cone throw and silk caps. A diffuser with a larger amplitude should hit the bass harder, right?
AIYIMA Portable Mini Speaker 2 pcs Waterproof - Kevlar vs Native Paper. In the comments, people squeak with delight at their sound quality, although in the description the frequency response is narrower (top 15 kHz versus 20 for the other two).

What do you think?

Answer 1

In general, the parameters that affect the frequency response are not the number of cores (?!), but the Thiel-Small parameters , as well as the shape, design, material and dimensions of the case.
It is especially interesting to read about the frequency response of the speaker, measured without acoustic design.
People even write entire books on this topic, but you want ready-made advice:

How does it work in the end - you can take any speaker (preferably more expensive, then the effect is more reliable) and put it into your column. And then your own desire to praise yourself will make the sound as transparent as possible, and the cymbals - ringing - simply because you will not buy a measuring microphone, 5 sets of speakers and compare them in an anechoic chamber (and this is the only way to get at least some objective result)

Answer 2

Bass is reproduced not so much by the speaker as by the case. Read up on how a typical three-way speaker is built, and why it's three-way. In short, there is physics that prevents a small speaker from playing bass loudly, and so far even fairly cool specialists cannot get around this limitation.
According to the link, the frequency range starts from 150 Hz (and it is not clear how sharply there is a blockage below 150 Hz, and indeed how they are intended, maybe the frequency response is already 50% lower there). For good bass sound, the speaker needs to reproduce sounds in the range from 20 Hz, ideally from 10 Hz (the human ear does not hear these frequencies, but the uniformity of the frequency response plays a role here).

Answer 3

Seal the case with plasticine without changing the speakers and see if it gets better. If not, then the jbl solution was copied by the people from the Republic of China, and you can not spend money on speakers. In these little shitty speakers, all the salt is in passive radiators, and tuning the resonances, the speakers are not the last, but not the most important.