Full range planar speaker using neo magnets - Page 3

cowanrg · 20th February 2007, 11:08 PM

500 magnets for the pair? if the magnets are 50mm x 12mm, wouldnt 250 (per side) cover an area of 15,000 square centimeters? im not sure how you are coming up with 500 magnets. did you mean 50?

gl · 20th February 2007, 11:47 PM

OK, 50mm = 5.0cm and 12mm = 1.2cm. So 5.0cm * 1.2cm = 6.0cm^2. Now 6.0cm^2. * 250 = 1500cm^2. This is 1.0m by 15cm or approximately 40" by 6" give or take.

Sounds like it's in the ballpark.

Cheers,
Graeme

JAMESBOS · 21st February 2007, 08:26 AM

Thank you ql, as you showed you divide by 100 not 10, as I have built the speakers in question I should know how many magnets I used!!! Thanking you again. Regards Anthony.

Klipschorn dude · 25th December 2008, 11:21 PM

Hi to all, I'm a newbie. I hope that I'm posting this correctly. Seems
like it's a little different from other forums I've visited. JamesBos,
I am interested in the Full range planar that is very simple to
build. Can you tell me if the magnets are placed vertically or
horizontally on the perforated metal sheet? Is there a place to
see the pictures you are talking about? I noticed that you gave
instructions to go to tubes. Is that You Tube? I cannot e-mail you
because I'm a newbie. It's great that the moderators run a tight
ship and protect us. I will await your post and happiness always,
Klipschorn dude

c2cthomas · 26th December 2008, 03:05 AM

Klipschorn dude, Welcome to diyAudio

try this link and look up post # 1458

http://www.diyaudio.com/forums/showt...41#post1123941

That should give you an idea of what's going on -

JAMESBOS · 26th December 2008, 09:36 AM

Hi, welcome, you can put the magnets on horizontal or vertical, I have tried both. It is easier to put them on vertically as the aluminium tape is easier to put on the membrane, not so many turns which is the hardest bit. This is the place you can easily rip the thin aluminium tape. If you do you have to start again. Hard on patience and the back! The tubes in question are on this forum one of the many sub sections, explore and learn! They are worth the effort and are easy to maintain . The dearest part are the magnets but they last for many years. The sound is very open and clean no boom or tizz. I have got a pair of 4' x 2' with neos hanging from the ceiling very light and thin about 3".Very easy to place in the room. I have built a pair 2' x 2' full range even easier to hang off the ceiling and out of the way.
Feel free to ask any questions and send email if so inclined.
Happy new year Anthony.

WrineX · 28th December 2008, 10:08 PM

what tape dit you used ? the aluminium stuff, is it from 3m ? or can i order it somewhere?

JAMESBOS · 28th December 2008, 11:51 PM

You can order it from CPC CO UK it is the tape used for burglar alarms security tape No. SR00001 it comes in a 9 metre roll. Regards Anthony.

Klipschorn dude · 29th December 2008, 07:25 AM

Hello C2CThomas. Thanks for the info on the pics.
I'm looking into building the planar speaker that JamesBos was
talking about. Sure are some nice friendly folks on this forum.
Happiness always,
Klipschorn dude

Klipschorn dude · 29th December 2008, 07:25 AM

Thanks JamesBos. I will see if I have enough magnets on hand
already. Like you said, that's the most expensive part. Thanks for
telling me what "tubes" was. I most definitely will explore this site.
Nice people live here.

Klipschorn dude

21st February 2007, 08:26 AM	#23
JAMESBOS diyAudio Member Join Date: Jan 2007 Location: wigston leics england	Thank you ql, as you showed you divide by 100 not 10, as I have built the speakers in question I should know how many magnets I used!!! Thanking you again. Regards Anthony. __________________ HENRY

25th December 2008, 11:21 PM	#24
Klipschorn dude diyAudio Member Join Date: Dec 2005 Location: Arkansas,USA	Full Range Planar by JamesBos Hi to all, I'm a newbie. I hope that I'm posting this correctly. Seems like it's a little different from other forums I've visited. JamesBos, I am interested in the Full range planar that is very simple to build. Can you tell me if the magnets are placed vertically or horizontally on the perforated metal sheet? Is there a place to see the pictures you are talking about? I noticed that you gave instructions to go to tubes. Is that You Tube? I cannot e-mail you because I'm a newbie. It's great that the moderators run a tight ship and protect us. I will await your post and happiness always, Klipschorn dude

26th December 2008, 03:05 AM	#25
c2cthomas 49 - for the 17th time diyAudio Member Join Date: Oct 2006 Location: Near "Music City" (Nashville Tennessee)	Klipschorn dude, Welcome to diyAudio try this link and look up post # 1458 http://www.diyaudio.com/forums/showt...41#post1123941 That should give you an idea of what's going on - __________________ DIY audio can be expensive – but getting to see things go up in smoke - that's priceless!!!! ..... "whatever - call it brainfart of Mighty ZM"

26th December 2008, 09:36 AM	#26
JAMESBOS diyAudio Member Join Date: Jan 2007 Location: wigston leics england	Hi, welcome, you can put the magnets on horizontal or vertical, I have tried both. It is easier to put them on vertically as the aluminium tape is easier to put on the membrane, not so many turns which is the hardest bit. This is the place you can easily rip the thin aluminium tape. If you do you have to start again. Hard on patience and the back! The tubes in question are on this forum one of the many sub sections, explore and learn! They are worth the effort and are easy to maintain . The dearest part are the magnets but they last for many years. The sound is very open and clean no boom or tizz. I have got a pair of 4' x 2' with neos hanging from the ceiling very light and thin about 3".Very easy to place in the room. I have built a pair 2' x 2' full range even easier to hang off the ceiling and out of the way. Feel free to ask any questions and send email if so inclined. Happy new year Anthony. __________________ HENRY

28th December 2008, 11:51 PM	#28
JAMESBOS diyAudio Member Join Date: Jan 2007 Location: wigston leics england	You can order it from CPC CO UK it is the tape used for burglar alarms security tape No. SR00001 it comes in a 9 metre roll. Regards Anthony. __________________ HENRY


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20th February 2007, 11:08 PM	#21
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	500 magnets for the pair? if the magnets are 50mm x 12mm, wouldnt 250 (per side) cover an area of 15,000 square centimeters? im not sure how you are coming up with 500 magnets. did you mean 50?

20th February 2007, 11:47 PM	#22
gl diyAudio Member Join Date: Dec 2003 Location: Sierra Foothills - California	OK, 50mm = 5.0cm and 12mm = 1.2cm. So 5.0cm * 1.2cm = 6.0cm^2. Now 6.0cm^2. * 250 = 1500cm^2. This is 1.0m by 15cm or approximately 40" by 6" give or take. Sounds like it's in the ballpark. Cheers, Graeme

28th December 2008, 10:08 PM	#27
WrineX diyAudio Member Join Date: Mar 2004 Location: Den Haag	what tape dit you used ? the aluminium stuff, is it from 3m ? or can i order it somewhere?

29th December 2008, 07:25 AM	#29
Klipschorn dude diyAudio Member Join Date: Dec 2005 Location: Arkansas,USA	Planar Speaker Hello C2CThomas. Thanks for the info on the pics. I'm looking into building the planar speaker that JamesBos was talking about. Sure are some nice friendly folks on this forum. Happiness always, Klipschorn dude

29th December 2008, 07:25 AM	#30
Klipschorn dude diyAudio Member Join Date: Dec 2005 Location: Arkansas,USA	Planar Speaker Thanks JamesBos. I will see if I have enough magnets on hand already. Like you said, that's the most expensive part. Thanks for telling me what "tubes" was. I most definitely will explore this site. Nice people live here. Klipschorn dude

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