Efficient amp

[Camerong]

I'm looking for an efficient class d/t amplifier board for battery powered speaker box

Thoughts on Ta2024?
Was thinking sure electronics Ta2024 15w x 2

Here's what it looks like so far

 

[Greg32]

Have a look at the boominator.

 

[Camerong]

Yeah I have but they use amp 6, can't find it. There must be an alternative

 

[Jerms]

"Sanwu" blue (mono) TPA3118, lots of TPA3116, lots of TDA7492.

Depends what features you want on the board or are happy soldering up.

 

[Camerong]

I'm happy soldering.
Main features I would like are bluetooth and an auxiliary input. Thats about it really

 

[Camerong]

I was thinking sanwu, but it's quite a high power amp it would drain the battery Feely fast, would it not?. how many watts would the amp use at around 50-70% volume.

 

[Camerong]

Any help would be appreciated

 

[Globulator]

I was thinking sanwu, but it's quite a high power amp it would drain the battery Feely fast, would it not?. how many watts would the amp use at around 50-70% volume.

The power is irrelevant really, it's the efficiency you need to look at - and the current it uses when silent too.

 

[Camerong]

The power is irrelevant really, it's the efficiency you need to look at - and the current it uses when silent too.

Right ok cool.
Can you recommend any amplifiers?

 

[gmarsh]

Use a TPA3116 or TPA3118 amplifier, preferably one with an output filter. Set all the AMx pins low for the lowest switching frequency, and connect the MODE pin to PVCC to put the amp in 1SPW mode. If there's a power LED on the board, remove it.

I don't know offhand any low cost amplifiers that have the MODE and AMx pins easily configurable, someone else might know.

 

[Camerong]

Hey gmarsh.
I ended up buying this

TPA3116 Bluetooth 4 0 Receiver Stereo Power Amplifier Board 2X50W | eBay

I purchased this one as it has a line in auxiliary input.

Hope you think this is a good buy.

 

[Camerong]

I'm having trouble choosing a power supply for it.

Would you trust these?
https://m.aliexpress.com/item/32459...d-1462579860956-08217-UneMJZVf&aff_platform=y