LOOKING FOR INFO - CRACKING THE 10 D-CELL BARRIER

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Reli

Boomus Fidelis
Line Out said:
This result is very close to the real power output. Sharp specifies the GF-777 power out to 4 x 8W @ 10%THD. So this can give us even more realistic (lower THD) output power values.
The service manual actually says 2 x 4W for the full-range speakers, and 2 x 3W for the subs.

gf777watts.jpg
 

Reli

Boomus Fidelis
jimmyjimmy19702010 said:
Pretty modest figures to be honest. Weird how the subs get less power than the main speakers!

James... :-)
It could explain why they're so quick to distort :lol:
 

Cpl-Chronic

Member (SA)
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
 

floyd

Boomus Fidelis
hell women been trying to break the 4 d-cell barrier for years lol. especially if their husband aint' home or sometimes even if he is .
 

Lasonic TRC-920

Moderator
JVC Floyd said:
hell women been trying to break the 4 d-cell barrier for years lol. especially if their husband aint' home or sometimes even if he is .
I saw this video on the internet....on never mind :eek:fftopic:
 

Cpl-Chronic

Member (SA)
riker1068 said:
Cpl.

Would you say the 999, 909, and 1000 would work with doing 2 ohm rated as as done with the 777?
I can't see why not if the AMP circuits are the same across all versions. Huge heatsinks too. Played lots of heavy bass tunes & opened it up to see if the sinks got warm at all & NO they didn't....even the IC's were cool to the touch & no problems...

Cpl
 

Cpl-Chronic

Member (SA)
Oh & just to set some peeps straight, once & for all, now I've used these 2 OHM BOSE woofers, all 4, with no problems & plenty of power, for 16 months now. Would love to take on a C-100 in overall loodness & sound quality. I know the 777 will sound awesome & loud, regardless.....

Video coming soon, shot tonight to mark 16 months @ 2 OHMS x 4 channels & M70 tweeters with a single order polyester film cap for crossover & horn loaded in the original tweeter locations.

Hopefully you can see the woofers hop. I tried to get an angle that would show how much those cans move.


Cpl
 

riker1068

Member (SA)
You are the man. I have 4 in now. Didn't do the m70 tweeters yet. Need to solder if all together. Of course I mis placed the big green caps I bought. I'll get around to it hopefully this year!
 

Cpl-Chronic

Member (SA)
riker1068 said:
You are the man. I have 4 in now. Didn't do the m70 tweeters yet. Need to solder if all together. Of course I mis placed the big green caps I bought. I'll get around to it hopefully this year!
The Middle woofs in my 777 are exactly the same as the ones I loaded into your 4360....That's why going past +2 BASS on that monster, the woofers go crazy, too crazy.....There is literally so much bass it maxes out the woofers to their physical limits so you have to be a bit careful when cranking the bass beats...

Cpl
 
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