Oh noooooo.....this thread has been resurrected from the spat pile....Yeah, @ 4 OHMS you could get 28 real world watts from the 4 woofers combined but the design does have its real world benefits too. 4 drivers working together will be more efficient overall than 2 larger drivers while being able to move more air. The primitive horn loaded tweeters are very good at boosting acoustic output to keep up with the woofers but the speakers that SHARP used were absolutely trash. Throw them in front of a train & replace them with a good mid-bass/mid woofer @ 2 OHMS & off you go.
The great thing about the 777, contrary to the opinions of some, is that they can easily drive 2 OHM woofers across all 4 channels. I've done it twice now over months of use & no ill effects at all. This puts the 777 to the 45 watt mark, full tilt. The caps & chips can handle the juice & It does make a big difference with the right woofers....
The preamp & the decks are very good quality for a blaster & even some mid range home audio of the time. The speakers are really the only bad move that hamstrung the poor triple7.
It is indeed fact that the shallow scoops of the sub-woofer section does provide a wave-guide function that is equivelant to a very shallow horn that boosts acoustic output by a couple of decibels. That's why a 777 has more of a bass stack sound than a traditional 2-way blaster, like an M90...
Of course, we all know an M90 will just bludgeon the 777 in its stock form but a 4x2 OHM setup with really efficient skins would stand up to an M90, at least get close...
Cpl
Cpl