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Old 25th February 2009, 08:22 PM   #101
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally posted by tinitus
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
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Old 25th February 2009, 08:27 PM   #102
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Hi Helmuth do you have a photo of the whole speaker?

-Dan
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Old 25th February 2009, 08:44 PM   #103
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally posted by danieljw
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
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Old 25th February 2009, 08:45 PM   #104
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tease !

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Old 27th February 2009, 04:09 PM   #105
Helmuth is offline Helmuth  Netherlands
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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

Click the image to open in full size.

And press.


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

Click the image to open in full size.
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Old 1st March 2009, 12:35 PM   #106
Helmuth is offline Helmuth  Netherlands
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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.

Click the image to open in full size.
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Old 1st March 2009, 08:34 PM   #107
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Nice crossovers Helmuth,

I like the foil inductor !



-Dan
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Old 1st March 2009, 09:15 PM   #108
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally posted by danieljw
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
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Old 1st March 2009, 10:53 PM   #109
tinitus is offline tinitus  Europe
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Hi

Is that the crossover fore all drivers
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Old 1st March 2009, 11:10 PM   #110
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Default 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
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