MoFi controversy

My last move was to take out the caps in the speaker woofers crossover and left only the pure silver ribbon inductor and I will try to do the same with the speaker tweeter silk dome. At the end the best cap is no cap at all.

@rauliruegas One important function of the crossover is to prevent the driver from operating out of its proper region. Depending on the driver this could mean that without those caps you might have more breakups audible- increasing distortion. I would do this with care if I were you.

@rauliruegas ,

I am not sure I have seen a woofer that does not have some breakup at higher frequencies, at least to some degree and this is especially true when you look at the off-axis response. The problem with only using the inductor is that the impedance of the woofer goes up with frequencies. Hence that single inductor is not going to attenuate that breakup very much. You may end up with something that sounds lively with some music, but pretty bad with other music. You need to capacitor to turn the woofer off before it starts creating problems. If you don’t want the cap, perhaps an active crossover would be a better path.

Sorry @atmasphere I hadn't refreshed this tab and didn't see your reply.

Dear @theaudioamp  : Before I did it I connected the woofer hard wired to the amps outputs, this is with out inductor/caps and performs good with out any breackup I been aware with and my system has very high resolution with almost non-existent noise floor.

I really appreciated your post as the @atmasphere  too. Now, you said:

"" You need to capacitor to turn the woofer off before it starts creating problems. ""

Which kind of problems could be to appear in the woofer or amps.? can be damaged the woofers. Are excellent ADS drivers?

Thank's in advance,

R.

Which kind of problems could be to appear in the woofer or amps

@rauliruegas 

Many woofers break up at higher frequencies. The breakups are great in a blues guitar amps but they really aren’t good for hifi. Breakups are portions of the cone that are no longer acting as a piston with the rest of the cone. Its like a resonance but doesn’t show up in the impedance curve. This is one reason ’full range’ drivers don’t work all that well unless crossed over.

Dear @atmasphere : As you know I use my 20.6’s as amps and as crossover to the speakers woofers can runs over around 80hz ( first order crossover. ).

The ADS woofers then crossover to the mid range at 450hz. The woofers are made of pulp/paper ( two 14" woofers each speaker. ) and the 3.5 mH silver inductor is wired in series with the woofer + input and from the + amp output and negative is direct to the amp output negative.

So, the stock crossover is a second order and with out the caps I understand is now a first order crossover. Yes probably the woofers are not with the same linearity than with the caps but I already tested unders several play conditions: low/high SPL with solo instruments as violin or piano and full scores as the Gladiator movie CD or the Telarc 1812 and under any of those tests that I did it 3-4 times either what I been aware is a better QS not day and nigth difference but a difference for the better.

I know perfectly not only the LP/CD I used but I know really good my room/system overall performance and I can’t be aware of any minimum breackup, at least that be audible.

I know that a way different speaker design and obviously dedicated for the speaker but in the past Serblin designer/owner of Sonus Fqaber use only inductors in the crossover of some models. Of course that that is not a reference been a different drivers/design.

After what I posted here : do you still think that I must return the caps to the woofers crossover?

Thank’s in advance,

R.