Need amp advice for 15W horn speaker

[coach]

Hi’ya all.
I’m working on a project here and am looking forward to some advise.
I’m planning to build a basic amp that’ll be able to drive a 15W 8ohm horn loudspeaker. Frequency response of the speaker is 200Hz – 15kHz. The amp can stay at full output power, so I don’t think it needs a volume control. Needs to drive 1 speaker only. Also, this is a portable device and will be powered by 10V – 12V battery. I may need a preamp too, but I think I have options to deal with that.
So, what do you suggest I look at? Some amps I’ve looked at and considered are the TDA2030 and the TDA1554.

[pompebled]

Hi Coach,

I just assembled a small amp with this kit:
TDA7377 Car Amplifier kit /DIY - eBay, Parts Accessories, Amplifiers, Home Audio, Consumer Electronics. (Eindtijd 01-jun-11 15:52:48 CEST)
Granted, it's a stereo amp, but I'm powering two horn loaded 4" speakers with it for outdoor use and it works like a charm.

Regards, Jan.

[Arty]

tda1557q is one choice to make. pretty easy project.
similar to tda1554, but it is a stereo chip, BTL config.
btw, they are identical when 1554 is set to BTL mode.
1557 is just even less complicated to make, you need no pcb for it at all. 6 caps and the chip.

[AndrewT]

12V battery power will give a maximum of 4Vac to your 8ohm load. That is equivalent to 2W into 8r0 or 4W into 4r0.

If you build a pair of single ended amplifiers each delivering 4Vac to your 8r0 load using a bridging circuit, expect ~8W into 8r0.
Using the sensitivity of your horn speaker you can check the maximum volume and the average volume @ your audience.