Help designing for a low(ish)-power, low-impedance, low-distortion amp?

Alright, so I blew up my iHome2GO's internal amplifier board, (Don't ask, long story, lots of electrical shenanigans) and I am attempting to design a new board to go inside it, and I'd prefer it to be a through-hole design (although I could use SMD parts if I HAD to...) The speakers that are inside the iHome are rated at 3 ohms, 3 watts, and I'd like to have an amp that outputs 3 watts. I just need help with the actual amplifier's design, I can't find anything like a chip suitable for the job (although I probably missed several), and am an amateur electronics hobbyist. I'd like low-distortion sound as well, I dabble in high-end audio, and I'd like this to sound at least as good as my headphones do, like it used to. Also, it runs at 6V (4xAA). Thanks!

Picture of Help designing for a low(ish)-power, low-impedance, low-distortion amp?
3 ? You sure that isn't an 8 ?
For a low power system, I'd suggest you used an LM4667 or that family anyway
hxr.keltz (author)  steveastrouk1 year ago
Yeah, they're actually 3 ohms. it seems kinda odd to me but w/e. Looking at the datasheet for that chip, I'm a bit worried about trying it at 3 ohms, because all specs point to it being designed for an 8 ohm speaker. In my experience, that can often cause the chip to overheat and die prematurely.
It REALLY looks like an 8 in the first photograph ! Three is a completely non-standard.
hxr.keltz (author)  steveastrouk1 year ago
So, are there any other chips you could recommend?
Depends on how efficient you want to be. If you want to use class D amps, then look further at the Boomer family.
hxr.keltz (author)  steveastrouk1 year ago
Got it. I just found the LM4871, which seems to suit my needs.
hxr.keltz (author)  steveastrouk1 year ago
Well, that's what I thought at first as well, but the other driver actually says "3" a bit more clearly, you can see it a lot better IRL than on the camera. Also, when I was playing around with them, I had hooked them up to my home receiver, and they sounded great, but the receiver got an alarming amount hotter than normal when driving these tiny things.