Try to close that hole at the backside for more bass. If that's not sufficient, fill it up with pillow filling (so that sounds waves travel through it much slower). The speaker has a tweeter anyway so you won't be missing out on the high tones.
TDA7492P 50+50W amplifier will be best for this project..price is around 9$ including shipping, Sound is great from this little amplifier and it way more powerfull than your 3W amplifier. Try it with this one and you will saw very good results. And dont forget to add more Li-ion batteries ( +2 will be fine ).
Proper upgrade would be a TPA3118-BTL amplifier and 4x18650 batteries (Branded batteries are better) in series with a BMS and a Balance Board. There's no built-in Bluetooth so a module is needed. The new Bluetooth 4.1 modules would cost $7 at most. With all of that, you would get a clean battery power of 16.8v max and 60w of clean 4ohm load output.
@@Swedish_Leo it's no metter what kind of speakers you can have but important thing is how clear the sound is out of the speakers. For example i have been using very old Tesla speakers and each speaker has 60W so it's 120W rms and the sound was briliant for the old speakers but 600W is way too better than 500 and also the thing is which diameter the speakers has. For example 15" subwoofer which has 500W is the same like 12" 600W ( cca ) . But if you can buy subwoofer or something else , try to look for heavy box with good quality speakers.
That bluetooth speaker you took apart already has an amp. And you just connected another amp on it. You should remove the onboard amp on the bluetooth module first before adding the PAM8403 amp. The built-in amp also has a high-pass filter on its input, that's why it has no bass. You should just bypass the built-in amp and high-pass filter in order to have more bass and avoid the weak built-in amp. You could search the datasheet for the amp in order to find its input pins. The built-in amp is probably an 8002 class AB amp. Those are really crappy amps.
RadegasTCZ It will be a lot less distortion cuz the bluetooth chip is directly connected to the amp and the bass response will be a lot better. You will have some trouble with the ground loop though. But that can be easily fixed by a 1:1 5 volt transformer.
He also didn't put a cap on the battery, and used cheap chinese 18650 batteries. The batteries would droop on the bass, lowering the low frequency volume. A good 1000uf cap across the battery terminals will fix it.
Very beautifuly done. At the base though instead of a hole do you think a passive radiator would have made a better difference or not and if there were a 3 stand for the bottom. Please let me know. However all being said it was easy and we'll done.
Автору говорить безполезно, он даже аккумы неправильно подключил (без нормальной защиты). И ещё, где это видано чтобы выход с усилителя подключали к другому усилителю?
Собрать коробку согласно характеристики динамика, рассчитать объем фазоинвертора, проклеить все швы герметиком... (Сарказм) Меня больше смущает, что он на 3w подал 4v и подключил к 160w динамику
@@ratos74 The protection charging circuit is on the bottom on the board. These batteries are bulged from the factory. It's kind of scary, as there is no room for the battery to expand when overheated... They will vent on the first sign of trouble xD
Do you realize he just built a speaker that will light fire if he plugs it in? People could die building this damn thing. This guy has no idea what hes doing...
before our own amplifier on this chip has stereo outputs left right if you look there you will find on the legs can be stereo, the potential of this amplifier is quite good , a pity to lose one output...😊
Nice video. I would have used at least a 20w amp though, cause the speakers description says 180 watt. Idk this is almost a woofer and you use a 5w amplifier
You need to use a pam 8610 instead the 8403. You will have a lot louder and better sound with it . its a 3+3 w vs 15+15w amplifier. Also you cant bridge the 8403. Nice work anyways😉
You should have used a charging model so you can charge it without flipping the switch on and you can also use it as a power bank if want cuz 12000 mah is so big for a bluetooth speaker
Dont connect PAM 8403 as bridge with common Negatives to a single speaker. They specifically warn about this in the datasheet & it superheats the IC too.
In a class D amplifier as the one shown in the video, you can't connect both outputs together. You can only do this for example with class AB amplifiers.
Why everyone thinks they need a port in there little speaker box 😂 that amount of power is verily pushing any air. You’re just killing the little bit of bass you got
why did u just buy a better amplifier (I think 20-30w is enough) and a buck step-up module? So the 12v amp can powered by those batteries and will produce a better sound
the enclosure technically is way too small for even sealed for this speaker let alone ported. even if the port frequency is a given frequency the enclosure still has to be big enough for it to actually be tuned to that frequency. I recently learned the hard way when I modelled my subwoofer system, I used the manufacturer's "recommended" airspace but that is really for 45Hz tuning, and with my "30Hz" ports I need double that - at the moment I'm losing 3-4dB at tuning
Wey, quiero mejorar mi bocina Una Nakazaki modelo BT2600D Tiene un fallo que es cuando sube el volumen al máximo se apaga, veo que es el condensador y además la batería interna es muy poca. Aparte quiero mejorar el sonido.. Me ayudas? Por favor
the enclosure is way too small for the speaker. or the speaker is way too big for the enclosure. whichever way you want to look at it. although I'm not one to talk right now as I found out that's the case with my subs after modelling my system, half the airspace technically required so losing around 3-4dB at the port frequency
