High-end 3 way dáppolito with aluminiumcone

[Helmuth]

quote: I now have for my self a concept full front loaded response from 35Hz and higher . Pictures, please

One day I want to sell them commercially when they work well.

[Helmuth]

Better pictures.

[Helmuth]

Here are some picture off the bottom plate this will cover the bottem acces. And also make a little foot off 12mm.





With a speed drill I made a little offset for the head off the screw.


The parts that where saw out will I glue to the cover creating a bottom cover off 36mm thick MDF.



Regards Helmuth

[Helmuth]

Next step the back plane off the mid speaker compartment.

.

To see if it levels up good put in a piece of mdf.



a look inside the top of the box.



The glue seals every hole to sub enclosure.

[Helmuth]

Hi music lovers some goodies have arrived here.



I have waited for 2 and a half week for the stuff.

Nice thick speaker connection M6 tread no gold bling bling doesn't fit the subtle design and some chrome spikes Monacor.



To connect everything properly inside I use silver plated copper wire 2.5mm^2.



And here it is the black gold. A Monacor twin coil sub black kevlar cone rubber surround with ventilated pool plate. Al mounted in a sturdy aluminium frame.
Monacor is a German brand but a sticker tells me it is made in Taiwan. It is really great deal for the buck (110 euro) very good materials and TS-parameters.

First intention was to use a aluminium woofer but the one I selected was obsolete. The Monacor was more expensive but top materials en parameters I love it.





A magnet a few cm bigger than a cd.



The frame as thick as a usb stick.




There is a down side I have to send one sub back. Of this one the cone is of centre and you can hear the voice coil rubs the pool plate. So building quality lacks.

[Helmuth]

I made some cut outs in the baffle.



The Monacor trumpet shape reflex pipe I use. Will reduce the noise of the air passing it. It got also a conical shape to the backside.



It fits very nice the trumpet shape.



I use imbus screws to mount the speaker gives a nice robust touch to the appearance.

[cdoggy81]

Nice build & write up. Keep up the good work!!!

[Nanook]

and documentation and...


As you are not using what I might call "typical" construction (read that as typically basic construction), any concerns regarding the material of choice have been negated.

your care and attention to detail is very evident. it may not be my "taste" in speaker design, but you certainly addressed almost every concern along the way.

stew

[Helmuth]

Nice build & write up. Keep up the good work!!!

thanks

it may not be my "taste" in speaker design, but you certainly addressed almost every concern along the way.

Hi stew,

My favourite choice would be a full range horn. for a low power amp.

But the colleague let me come on with a design his only wish was a bassreflex and impressive low frequency response and we looked what kind of design he liked.

This in combination with my restrictions off building a professional looking box and budget is the reason of the made choices. This one will become a ridicules 200 Watt nominal 300W music power.

This is more by accident so high due the used 10" kevlar sub.

[tinitus]

Originally posted by Helmuth

This is more by accident so high due the used 10" kevlar sub.

Kevlar?...looks more like carbon to me