I would like a recommendation for a class D amp

Erlas

Member
2018-05-20 7:31 pm
Hey guys.

So I'm trying to build a somewhat portable two-way stereo speakers.
Theese are the drivers I decided to use (yes this is a budget build):
woofer: tcp115-8 (dayton)
tweeter: nd20fb-4 (dayton)

I managed to design a pretty decent corssover design (i tried to get the flattest freq response)
Also I designed a suitable vented enclosure for the tcp115. Theoreticaly it should produce 50hz at -3db.

But I really cannot decide what amp i should use. It seems like the class D amps can sometimes have built in audio filters? is that true? maybe all of them do? this confuses me because i tried to design the flattest crossover design i could, just to know that the amp might alter the frequency response in the way that i would not like. i really have no knowledge about theese amps (not a great knowledge in amps in general) so i guess you can understand my confusion.

a single tcp-115 is rated for 40w rms and nominal impedance is around 8 ohms.

Do you have any class D amp reccomendations for this type of setup? budget options are welcome, links appreciated aswell.

Thank you.
 

Erlas

Member
2018-05-20 7:31 pm
Do you want the kit to work with battery? If yes, what kind and voltage of battery?

Yes, I'm planning to build a custom lithium battery for this build. The voltage would not be a problem. I was thinking about a 6 series cell setup of 18650 cells, giving me a nominal voltage of around 22.2Volts. But of course I can go higher or lower, should not be a problem.
 

Erlas

Member
2018-05-20 7:31 pm
Okay, it's going to be a nice kit. With Dayton 4 "woofers, and a fairly low efficiency, it takes an amplifier with a little power reserve. I would say that the ideal would be between 30-70w. Maybe a TDA7498 or better a TPA3250. There is also the TPA3118 in mono BTL. My first choice would be a TPA3250

Thank you for the reccommendations. I had the TDA7498 in my list of options, but honestly the TPA3250 seems like a much nicer option, but it costs quite a bit more than the tda7498. Ill try looking at some reviews. the more expensive option might be a worthwhile investment