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Old 29th December 2008, 11:45 PM   #31
a.wayne is offline a.wayne  United States
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could you guys post some pics ?
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Old 30th December 2008, 09:35 AM   #32
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Hi Wayne
If you go to post 25 on the previous page then look at post 1458,1460,1461 this will give you the general idea to build a full range planar, using ferrites or neos. Regards Anthony.
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Old 31st December 2008, 12:08 PM   #33
WrineX is offline WrineX  Netherlands
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anybody has tried a small planar ? for only the mids and high from 1k and up ?

everybody is making fullrange but i like to keep the whole systemm small, also the panel cant be verry width because of beaming the high frequency. cant fin it anywhere on the site and i would really like to start with this kind of small project, before buying 200 neo's
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Old 1st January 2009, 06:21 PM   #34
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Are all the poles facing the same direction on these magnets or are they flipped in rows? Also, what kind of adhesive are you using to glue those fellas down? I sure would hate to get my fingers pinched by 250 large grade 45 NDs!
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Old 1st January 2009, 10:17 PM   #35
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Hi Corvus,
The magnets are in alternate rows N S N S etc, and you don't have to glue them down as the perforated steel sheet holds the magnets down as they are quite powerful. The magnets I use are 50mm x 12.7mm x 3mm. These are easier to control. Bigger magnets would be more dangerous. I have trapped my fingers a few times! Nasty blood blisters! These neos are very powerful and can only be separated by sliding. So care and patience is the order of the day.
Regards Anthony.
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Old 17th July 2010, 04:30 PM   #36
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Have just built my first push pull full range planar size 40 x 60mm, am very happy with it it is as loud as my 4' x 2' full range planar. I am going to build one using neos same size. The ferrite one weighs in at 14 kilos. The neo one will be a lot lighter and more sensitive. I shall concentrate on the push pull design for all my future constructions. This is the way to go.
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Old 17th July 2010, 11:18 PM   #37
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The size should read 60 x 40cms silly me.
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Old 18th July 2010, 02:37 AM   #38
a.wayne is offline a.wayne  United States
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James ,

I'm getting ready to do a push pull bass unit and I do plan on using Bars as opposed to perf sheets as you did. Still curious to see what you have come up with on yours, I cannot tell from the previous pics posted .

Could you post some pics on the finished unit ...


regards,
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Old 18th July 2010, 03:06 AM   #39
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by a.wayne View Post
James ,

I'm getting ready to do a push pull bass unit

regards,
hey wayne
just a small note
remember to have front and back magnet with N to N towards each other, and S to S
if you choose front/back N to S, then you will get sidewards movement instead

one advantage is that front and back magnets wont attrackt each other, thus wont clash together

though I doubt its simple
magnets do strange things
and the field may not behave as intended

before buying all those expencive magnets, I suggest to build a small model, to see how it behaves
and its very tricky to assemble
you can only handle one magnet at a time
do not try to make larger sections
those magnets are impossible to control in multiples
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Old 18th July 2010, 08:28 AM   #40
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I use 2 diaphragms so you can put the magnets on either side of the perforated sheet N to S so there is no clashing of magnets or any danger of the magnets jumping about. This works fine as I said before the 600 x 400 mm push pull full range planar is as loud as my 4' x 2' creation in red. I'm having difficulty loading my pictures on this site. I will put the picture of my new p/p frp on another site well my Grandson will as he is the computer expert.
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