I've recently had the idea of making a portable (quite compact) bluetooth speaker and after a bit of research I'd like to think I've come to a nice set-up that'd give decent-ish results (no way anything up to "audiophile" standards of course).
I'll be using 2 DMA45-8, one for each channel and 2 ND65 passive radiators. After playing a lot around in winISD I've found that if I pair one of each in an enclosure opposite of each other with 0.3L air I'd be getting best results. I've found a BT module from TinySine I'll be using for connection and for power I'll be stripping down a xiomi powerbank for the power supply.
The amplifier is an issue. I've found one small amp I can source locally, based on the TPA3110 chip. I understand this most likely is not a good option, and so I was also looking at the BVS25 with which I could drop the BT chip entirely, or the TA2024 which also looked good and compact enough for my application. Do I keep the one I've already chosen, or do I want to look into the other options.
Regarding the drivers and PRs, so far the set-up makes sense in my head. Am I missing something here? Should I look into getting other drivers and/or radiators? Should I perhaps not be placing them opposite of each other?
In conclusion I know there are a lot of things to cover and the science behind designing these things goes very deep, but I'd like a general overview of the project as a whole.
I'll be using 2 DMA45-8, one for each channel and 2 ND65 passive radiators. After playing a lot around in winISD I've found that if I pair one of each in an enclosure opposite of each other with 0.3L air I'd be getting best results. I've found a BT module from TinySine I'll be using for connection and for power I'll be stripping down a xiomi powerbank for the power supply.
The amplifier is an issue. I've found one small amp I can source locally, based on the TPA3110 chip. I understand this most likely is not a good option, and so I was also looking at the BVS25 with which I could drop the BT chip entirely, or the TA2024 which also looked good and compact enough for my application. Do I keep the one I've already chosen, or do I want to look into the other options.
Regarding the drivers and PRs, so far the set-up makes sense in my head. Am I missing something here? Should I look into getting other drivers and/or radiators? Should I perhaps not be placing them opposite of each other?
In conclusion I know there are a lot of things to cover and the science behind designing these things goes very deep, but I'd like a general overview of the project as a whole.
Hi, what's a Xiomi ( maybe Xiaomi ?) powerbank? You need some real ( ah ah ah) voltage like 12-15 V.
Like a series of 4 Li-Ion batteries or 5 ( 5S to make 18 V ) and a proper charger.
Like a series of 4 Li-Ion batteries or 5 ( 5S to make 18 V ) and a proper charger.
Sorry yes you're right it's Xiaomi 😅 this one specifically. To power the amps I'll be using a step up circuit. Sadly getting a BMS for a 4S or 5S is kind of hard where I am and designing one myself is not something I trust me with yet, so stripping down a power bank is the next best thing really.