Hey Fivestring

Borat · 3rd September 2009, 01:50 AM

just how do those 30" wide ( as opposed to long ) transmission audio ribbons work ? i mean not how well but how are they constructed ?

fivestring · 3rd September 2009, 07:42 AM

Actually, they are 11cm wide and 200cm tall, I realised my typo, but unfortunately you can`t correct mistakes the next day here at diyAudio (I wonder why).

It`s an ordinary ribbon 11cm wide, it reaches 15kHz and then smoothly falls off.
It might be useful down to 50hz or so, but it would require a specific high current amp to drive it.
I think I`m gonna abandon such wide ribbons in favor of planar magnetic or some hybrid type of woofer. Such wide ribbon has too low Fs and correspondingly low sensitivity (when used single), to be of any use. But I could be great for the 100-10.000 Hz, I guess.
For a successful low frequency dipole operation, you need a resonant system, either drum head or cone (unless they are extremely large like TA), with an Fs of about 25Hz or higher, otherwise the sensitivity drops too much.

Borat · 4th September 2009, 03:54 AM

good. i was afraid they came up with something smart

the only reason i asked ...

fivestring · 4th September 2009, 06:34 AM

I shouldn`t read in the early morning while I`m still half asleep.
I overlooked you asked about TA`s ribbons, not mine, sorry.
It`s obvious I`m getting old...

Borat · 4th September 2009, 11:22 PM

hehe

i asked you because you seem to be a big fan of theirs. i understand your ribbon. i don't understand their 32" x 32" panel. do you know what is up with it ?

fivestring · 5th September 2009, 05:42 AM

Actually, I admire their dedication to the ribbon principle and their decision to advance and popularize this art, however I do not agree with some of their construction details.
That`s all I can say.

3rd September 2009, 01:50 AM	#1
Borat Banned Join Date: Aug 2009 Location: Silicon Valley & NYC	Hey Fivestring just how do those 30" wide ( as opposed to long ) transmission audio ribbons work ? i mean not how well but how are they constructed ?

4th September 2009, 06:34 AM	#4
fivestring diyAudio Member Join Date: Apr 2008	I shouldn`t read in the early morning while I`m still half asleep. I overlooked you asked about TA`s ribbons, not mine, sorry. It`s obvious I`m getting old... __________________ Loudspeakers From Abyss

5th September 2009, 05:42 AM	#6
fivestring diyAudio Member Join Date: Apr 2008	Actually, I admire their dedication to the ribbon principle and their decision to advance and popularize this art, however I do not agree with some of their construction details. That`s all I can say. __________________ Loudspeakers From Abyss

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

3rd September 2009, 07:42 AM	#2
fivestring diyAudio Member Join Date: Apr 2008	Actually, they are 11cm wide and 200cm tall, I realised my typo, but unfortunately you can`t correct mistakes the next day here at diyAudio (I wonder why). It`s an ordinary ribbon 11cm wide, it reaches 15kHz and then smoothly falls off. It might be useful down to 50hz or so, but it would require a specific high current amp to drive it. I think I`m gonna abandon such wide ribbons in favor of planar magnetic or some hybrid type of woofer. Such wide ribbon has too low Fs and correspondingly low sensitivity (when used single), to be of any use. But I could be great for the 100-10.000 Hz, I guess. For a successful low frequency dipole operation, you need a resonant system, either drum head or cone (unless they are extremely large like TA), with an Fs of about 25Hz or higher, otherwise the sensitivity drops too much.

4th September 2009, 03:54 AM	#3
Borat Banned Join Date: Aug 2009 Location: Silicon Valley & NYC	good. i was afraid they came up with something smart the only reason i asked ...

4th September 2009, 11:22 PM	#5
Borat Banned Join Date: Aug 2009 Location: Silicon Valley & NYC	hehe i asked you because you seem to be a big fan of theirs. i understand your ribbon. i don't understand their 32" x 32" panel. do you know what is up with it ?

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)