Hi Dr. EM,
You don't need a schematic to connect a 0.1 ohm resistor in series with a LM386 amp then connect 6 of them in parallel on each side of the bridge.
Actually, a schematic might be a good idea since most of the amp input capacitors aren't needed in your circuit when it uses LM386 amps, because their inputs operate at 0V. The output offset voltage adjustment pot also probably isn't needed.
That's right, with a 14.4V supply and an 8 ohm load only a total of 6 of them will provide about 9 Watts, but of course without a heatsink they will get just as hot as 12 of them providing 15 Watts into a 4 ohm load, but still within their thermal limit.
If you like novelty amps, you should try TI's surface-mounted (without a heatsink) 10W or 20W class-D amp IC. I don't like it, it has thirty some-odd tiny pins, and I think its bottom must be soldered to the board somehow (very hot air?). Operate the amp at about 50W and it will solder itself! Reminds me about when I soldered together a muffler for a model airplane's engine. It melted!
I have been taking a DIY bridged stereo amp to the beach for years. It is powered by only 6 AA Nicads. I'll replace them with much higher capacity Ni-MH cells for this summer. With my tiny but wideband speakers, my sound system blows away all those kids' boomboxes. :lol: