Planar speaker - first try

[JAMESBOS]

http://imgur.com/keozu.jpg
http://imgur.com/bmrpH.jpg
http://imgur.com/BFpGe.jpg
http://imgur.com/I4fWO.jpg
http://imgur.com/NGWGt.jpg
http://imgur.com/VycM7.jpg
http://imgur.com/qlObq.jpg
http://imgur.com/b3Svk.jpg
http://imgur.com/b3Svk.jpg
http://imgur.com/8s8im.jpg
1) 2 boards in position and cut out marked.
2) Ready to cut out hole with jig saw.
3) Hole cut out.
4) Perforated steel sheet ready to cut with scissors.
5) Perforated steel sheet in place.
6) Magnets in position.
7) Tape position marked down sides.
8) Tape position marked.
9) Finished article in position.
I hope this helps JonasKarud,

[a.wayne]

James that's a lot of magnets , how does the sound get out ? ...

[JonasKarud]

Thanks, Henry!

I've seen these pictures before, but I don't know where...

[JAMESBOS]

Quite easily the membranes are on the outside! They also move in unison, which allows the membranes too move a good distance so you get good output. I did wire them up differently at first but the membrane hardly moved at all. You live and learn..

[JAMESBOS]

You may have seen the last photo but all the rest are new.

[JAMESBOS]

Put one picture in twice, silly me, it was late in the day, and I was feeling a bit rough. But they convey the idea all together.

[JAMESBOS]

I hope you don't mind me saying, but I wouldn't bother with the 2.2 meter high bass panel. I built one about that size, and was very disappointed in the outcome. In fact it was no louder or better in the bass than one of my 21" x 24" planars I had built previously.

[WrineX]

yeah they are , also a pain to mount i thought later, without wobling, but still im really fond of the mix idea of magneplanar and electrostatic speakers.

[bentl]

Hi Henry

Have you tried to arrange the magnets in rows or columns with a space between them? A magnet-wide space..
Then run the foil tape on top of the space between rows or colums

I think you will save 50% of magnets and get a higher output

[bentl]

Just a thougt;

What difference does it make if I have a odd or even number of colums with alternating oriented magnets

I am considering 5 or 6 colums with 800mm lengths of 10 mmwide magnets

If I only run the film between columns 5 or any other odd number seems to be a sound solution - foil will start and end on the same side of the diaphragm

Bent