[dts ma 7.2]

Hi, i would like some one to check this image and let me know if i have correctly bypassed my fuse but kept antenuation.

[I.Greyhound Fan]

Why would you want to bypass the fuses on the MMG's?  I own the 1.6's and MMG's.  I once blew the fuses on my 1.6's.  It saved the speakers from damage.

[Speedskater]

I too wonder why you would by-pass the fuse?
Do the people that suggest dumb ideas like this, offer to replace your speakers if they get damaged?

[Davey]

Your question has been asked and answered (twice now) on the other forum.
The answer is "no".....that configuration does not leave the attenuation option enabled.  In your photo you have disabled both the fuse and the attenuation.

If you're not comfortable making changes like these then I would suggest not to do it.  If you feel the fuse is degrading audio performance then I would simply replace it with a 20-30 amp fuse.

Cheers,

Dave.

[Letitroll98]

I did this on my MMG's that I no longer own and it significantly improved sound quality.  It also disabled attenuation, but I never used the resistors anyway.  As far as safety is concerned, none of my other speakers have fuses in the circuit, why do their manufacturers feel fuses are not needed?  I used my MMG's with several amps ranging from 20 to 400 watts and never had a problem, however if you're worried at all you shouldn't perform this mod.

[SteveFord]

Lynda's daughter popped the fuses in my old 1-Cs and a faulty preamp popped the fuses in my MMGs.
I'd much rather replace a cheap fuse than deal with speaker repairs.

[timind]

You could always replace the fuse with a quality piece of wire.

[Davey]

Lynda's daughter popped the fuses in my old 1-Cs and a faulty preamp popped the fuses in my MMGs.
I'd much rather replace a cheap fuse than deal with speaker repairs.

That's an incorrect assumption that it's an either-or failure between fuse and transducer.
The quasi-ribbon tweeter transducers are MUCH more robust than a 2-3 amp fuse element and would easily withstand most transients that would open the fuse.

This topic has been hashed to death on the Planar forum for many years.  I'm surprised there's still misunderstanding regarding the premise of this modification.

Dave.

[SteveFord]

Perhaps so, there was actually smoke coming from an MMG!
That will get the adrenaline flowing. 

[Davey]

Well, if there was smoke being emitted you obviously had more serious problems. 

This fuse situation is obviously a trade-off.   Some folks feel the fuse characteristics are imparting negative audible consequences in normal operation and are comfortable removing it.  Much depends upon the power amplifier used and how well it protects both the speaker and itself if an internal malfunction occurs.  Transients generated upstream of the power amp might make their way to the transducers also.

As long as a user understands the trade-offs of removing the fuse then I say go ahead and do it.  But let's not kid ourselves and assume the fuse is a 100% foolproof protection device that will safeguard the transducer under any adverse conditions.  That's simply not the case.  Neither can we say the fuse doesn't affect the audible performance of the speakers.

In this particular case, it's not clear if the OP understands those trade-offs, but they're his speakers and he can do whatever he wants with them.

Dave.

[*Scotty*]

Deleted.

[Davey]

Yet another trade-off.    That's not really a bypass either.
You'd have to assume capacitor ESR is probably greater than fuse resistance at high frequencies.  It's a shunt configuration with the fuse still carrying the majority of the current.

I see no reason to complicate the fuse non-linearity situation with a capacitor shunt if a user is fairly confident in his power amplifier setup.  Chances are the tweeters will be just fine in 99% of operational conditions with no fuse/capacitor.  Even if you do burn out a tweeter, it might be possibly repaired.  And even if worst-case, these are just MMG's we're talking about.  A whole new pair could be purchased for the price of some silly audiophool crossover components some users throw at their systems. 

Dave.