High-end 3 way dáppolito with aluminiumcone

[Helmuth]

Years ago I thought about the aproach with speakercloth
Only problem is that it really doesnt like dust

It can be cleaned with a vacuum cleaner.

And when it becomes I bit lighter by sunlight. It can be easily upgraded with a plastic treatment like cockpit spray, then it is perfectly black again.


Regards Helmuth

 

[danieljw]

Hi Helmuth do you have a photo of the whole speaker?

-Dan

 

[Helmuth]

Hi Helmuth do you have a photo of the whole speaker?

-Dan

I will save that photo for last. So you have look a few times more Dan.


I think they look classy the white birch housing an the black carbon cone with the black cloth front.

Then the titanium cone leaps out and is very outstanding together with the aluminium horn tweeter.

It is a combination a style and showing what we got, it is certainly not a dull speaker to look at.


Regards Helmuth

 

[danieljw]

tease !

 

[Helmuth]

You see I use glass woll to damp the rear wave witch reflect to the housing. In fact I try to absorb the backwave with it rather then to damp it.


Glue

And press.


The white wood glue is used to block the PU-glue to foam to the outside and foul the front plate.

 

[Helmuth]

Here a photo of the filter board. There is no PCB needed it doesn't look as professional this way but it would not ad to the performance.

I mounted the coils with tyreps because screws would influence the magnetic behaviour. I saw a measurement of this once.
So I do not have to worry about that influence.

The JANZEN AUDIO and ERSE coils and big MKP of clarity cap makes it really high performance. Parts only found in expensive high end range loudspeakers.

The coils are place about 10cm apart of each other, and the fields of the coils are 90 degrees in opposite. There will be a capacitor and a 8Ohm resistor added for the horn tweeter. To correct the impedance increase of the midrange I will ad a zobel of resistor and capacitor. So these are not mounted yet.

 

[danieljw]

Nice crossovers Helmuth,

I like the foil inductor !



-Dan

 

[Helmuth]

Nice crossovers Helmuth,

I like the foil inductor !



-Dan

Hi Dan,

It is a impressive coil to see the Janzen audio its huge. I have chosen to save money on drivers, because there are many really nice drivers for low budget.

And it is a passive cross over there for I want to avoid losses. there for MKP capacitors and high Q coils.


Greetz, Helmuth

 

[tinitus]

Hi

Is that the crossover fore all drivers

 

[mcmahon48]

I have designed a wrap around speaker cloth

that you just take it off and easily wash it to make it easier to get the dust off

 

[mcmahon48]

that crossover cant be for all the speakers

for the caps sizes would be varied

 

[Helmuth]

Hi

Is that the crossover fore all drivers

What you see it almost complete for low and midrange 1st order.

 

[mcmahon48]

what values are you using for what range

I see the three coils so why thy for a first order
it look like those two capacitors are the same value
so fill us in on your thinking

 

[Helmuth]

Re: what values are you using for what range

I see the three coils so why thy for a first order
it look like those two capacitors are the same value
so fill us in on your thinking

coil with core in sries with sub. two capacitors parallel; in series with flatwire.
Coil with ferritecore is impedance correction for mids second order or zobel I have to try. Otherwise they wouldn't have damping at all.

 

[Helmuth]

Here some new pictures.

I have mounted the filter board on the backplane of the box.

It is premature I have to measure and listen if I have to improve it.

Now I have to set up the freeair garden measurement

 

[danieljw]

Lol i ilke the technical lab "garden" environment

hope the measurements go well !!!

-Dan

 

[tinitus]

Looking forward to see it

 

[Helmuth]

Photo shoot

How cool is this

Enjoy, Helmuth.Lageschaar

 

[J.R.Freeman]

Beautiful work, Helmuth! They look terrific! Very professional looking - like something you'd find in a studio. How do you find the sound? Something about those woofers makes me think they'd sound nice and tight, though I know you can't tell much from looks.

JF

 

[Brett]

Nice work there Helmuth, they look excellent.