I recently acquired the H-551 soundbar at a thrift store, and looked at the user manual. The 550 and 551 are the same generation, same hardware, even share the same manual, so I found a 550 subwoofer off EBay because the only 551’s I found were the full set.
But now the woofer won’t pair with the soundbar. Are they not compatible? Is there a firmware update I’m missing or something? Seems a little strange that two devices of the same generation can’t detect and pair with each other.