Primary Drive Loudspeaker by Tim de Paravicini

Tyimo · 27th January 2009, 06:27 PM

Hi!

Does somebody knows this:

http://www.ear-usa.com/new_products.htm

What is this loudspeaker?
How is it working?

Tyimo

cixelsid · 27th January 2009, 06:40 PM

http://www.stereophile.com/interview...av/index2.html

Scroll to the bottom of the page...

Tyimo · 27th January 2009, 06:44 PM

Yes, I know it.

.."Basically, it's a dynamic speaker system, with a tweeter and a midrange and a bass unit. The bass unit and the midrange drive a membrane. The bass unit makes a membrane of effectively 12" by 18" (305mm by 457mm) surface area bend and vibrate to put bass into the room. So it has dipole properties. I don't make the drive-units myself and I subcontract the cabinets, but it's still my basic principles."

But I don't understand this sentence:
...The bass unit and the midrange drive a membrane. The bass unit makes a membrane of effectively 12" by 18" (305mm by 457mm) surface area bend and vibrate to put bass into the room...

Maybe a drawing or a picture would help me to imagine how it works....

Tyimo

Tyimo · 28th January 2009, 01:24 PM

Is this something like a normal dynamic driver's voice coil mooves a big and flat surface (membrane)?

Tyimo

ashok · 28th January 2009, 03:11 PM

I seem to recall that I saw someone put up pictures of something like this a few years ago. Was it on diyaudio .com ?
It was supposed to be a computer speaker. Basically it consisted of two vertical posts spread a few inches apart with a pvc (?) film stretched between the posts ( both sides). The driver was at the bottom and coupled with the air between the two membranes through a small hole at the bottom.
Rather simply made at that time. Supposed to sound very interesting. It was a dipole of course because it radiated from both sides . Did he get a patent for it at the time ?
There were pictures also with a brief description on how to make it.

Tyimo · 28th January 2009, 03:34 PM

Quote:

There were pictures also with a brief description on how to make it.

Would be nice to see it.....

Tyimo

ashok · 28th January 2009, 03:44 PM

Here you go !
I saw a different web page but at first sight the speaker looks the same !

http://www.audiojunkies.com/blog/495...lanar-speakers

This was posted in 2007 . What I saw initially was much older !

Tyimo · 28th January 2009, 05:38 PM

Thanks Ashok!
Now I understand. Do you think that the Paravicini speaker working in the same way?

Tyimo

marchel · 28th January 2009, 05:46 PM

Looks like the NeXT best thing.

planet10 · 28th January 2009, 05:54 PM

They could be a derivative of the podium speakers, or a development of the speaker developed by the company Moray James worked for in Calgary. AFAIK one of the prime guys headed to the UK.

Moray would be able to tell us more.

dave

27th January 2009, 06:27 PM	#1
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	Primary Drive Loudspeaker by Tim de Paravicini Hi! Does somebody knows this: http://www.ear-usa.com/new_products.htm What is this loudspeaker? How is it working? Tyimo

28th January 2009, 03:11 PM	#5
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	Grown up computer speakers ? I seem to recall that I saw someone put up pictures of something like this a few years ago. Was it on diyaudio .com ? It was supposed to be a computer speaker. Basically it consisted of two vertical posts spread a few inches apart with a pvc (?) film stretched between the posts ( both sides). The driver was at the bottom and coupled with the air between the two membranes through a small hole at the bottom. Rather simply made at that time. Supposed to sound very interesting. It was a dipole of course because it radiated from both sides . Did he get a patent for it at the time ? There were pictures also with a brief description on how to make it. __________________ AM

28th January 2009, 03:44 PM	#7
ashok diyAudio Member Join Date: Jun 2002 Location: 3RS	Here you go ! I saw a different web page but at first sight the speaker looks the same ! http://www.audiojunkies.com/blog/495...lanar-speakers This was posted in 2007 . What I saw initially was much older ! __________________ AM

28th January 2009, 05:54 PM	#10
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	They could be a derivative of the podium speakers, or a development of the speaker developed by the company Moray James worked for in Calgary. AFAIK one of the prime guys headed to the UK. Moray would be able to tell us more. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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27th January 2009, 06:40 PM	#2
cixelsid diyAudio Member Join Date: Oct 2007	http://www.stereophile.com/interview...av/index2.html Scroll to the bottom of the page...

27th January 2009, 06:44 PM	#3
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	Yes, I know it. .."Basically, it's a dynamic speaker system, with a tweeter and a midrange and a bass unit. The bass unit and the midrange drive a membrane. The bass unit makes a membrane of effectively 12" by 18" (305mm by 457mm) surface area bend and vibrate to put bass into the room. So it has dipole properties. I don't make the drive-units myself and I subcontract the cabinets, but it's still my basic principles." But I don't understand this sentence: ...The bass unit and the midrange drive a membrane. The bass unit makes a membrane of effectively 12" by 18" (305mm by 457mm) surface area bend and vibrate to put bass into the room... Maybe a drawing or a picture would help me to imagine how it works.... Tyimo

28th January 2009, 01:24 PM	#4
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	Is this something like a normal dynamic driver's voice coil mooves a big and flat surface (membrane)? Tyimo

28th January 2009, 05:38 PM	#8
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	Thanks Ashok! Now I understand. Do you think that the Paravicini speaker working in the same way? Tyimo

28th January 2009, 05:46 PM	#9
marchel diyAudio Member Join Date: Nov 2007	Looks like the NeXT best thing.

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