Round Ribbon Tweeters

avincenty · 15th October 2011, 04:45 AM

These tweeters are very similar to the ones APEXJR sells. Took one apart and found they are dipoles. Impedance is 8 ohms.

If I wanted to use them in an array, will these experience lobing problems similar to domes?

planet10 · 15th October 2011, 07:04 AM

I tool apart a few of the ApexJr ones and made dipoles just like yours...

dave

avincenty · 15th October 2011, 07:50 PM

I have used a couple before as helper for a RS1354 Bob Brines TL, they aren't bad.

Since I have so many I was thinking about an Array.

If I butt the tweeters, the distance between the two closest holes (from adjacent tweeters) in the disk is .75 inches. This is one wavelength of aprox 18Khz. Is this a correct assumption? Or do i need to use the true center to center of the tweeters.The true center to center of the tweeters is 1.5 inches. Do the individual holes in the tweeter act like a mini array itself?

alfredo

avincenty · 17th October 2011, 02:12 PM

Bump.

Am I asking in the wrong forum? Maybe the title needs to be amended with "for line array"

Alfredo

15th October 2011, 04:45 AM	#1
avincenty diyAudio Member Join Date: Jan 2008 Location: Southern California	Round Ribbon Tweeters These tweeters are very similar to the ones APEXJR sells. Took one apart and found they are dipoles. Impedance is 8 ohms. If I wanted to use them in an array, will these experience lobing problems similar to domes?

15th October 2011, 07:04 AM	#2
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	I tool apart a few of the ApexJr ones and made dipoles just like yours... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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15th October 2011, 07:50 PM	#3
avincenty diyAudio Member Join Date: Jan 2008 Location: Southern California	I have used a couple before as helper for a RS1354 Bob Brines TL, they aren't bad. Since I have so many I was thinking about an Array. If I butt the tweeters, the distance between the two closest holes (from adjacent tweeters) in the disk is .75 inches. This is one wavelength of aprox 18Khz. Is this a correct assumption? Or do i need to use the true center to center of the tweeters.The true center to center of the tweeters is 1.5 inches. Do the individual holes in the tweeter act like a mini array itself? alfredo

17th October 2011, 02:12 PM	#4
avincenty diyAudio Member Join Date: Jan 2008 Location: Southern California	Bump. Am I asking in the wrong forum? Maybe the title needs to be amended with "for line array" Alfredo

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