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Old 9th February 2005, 03:23 PM   #11
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Thanks!

What is the resistance/impedance of the ribbon??

0.5 ohm ribbon

6 ohm speaker system
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Old 9th February 2005, 04:04 PM   #12
dhenryp is offline dhenryp  United States
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Quote:
Originally posted by OGIaudio
Thanks!

What is the resistance/impedance of the ribbon??

0.5 ohm ribbon

6 ohm speaker system

I'm confused. I though the Ribbon WAS the speaker system. Wat is between the .5 ohm ribbon and the output of your amplifier?

Thanks,

Denis
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Old 9th February 2005, 04:21 PM   #13
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Quote:
Originally posted by OGIaudio
Thanks!

What is the resistance/impedance of the ribbon??

0.5 ohm ribbon

6 ohm speaker system


Someone is being silly?



I highly doubt the veracity of the published frequency response curve is possible with just that little thin ribbon as the radiating element. OR, if it does then the max SPL possible has to be scary low.


The thickness spec'd in the post is ~10x the usual thickness for a tweeter, btw...

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Old 9th February 2005, 08:02 PM   #14
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What is between the .5 ohm ribbon and the output of your amplifier?
Please sorry, I can't tell you now.

Someone is being silly?
My dear Bear...

I highly doubt the veracity of the published frequency response curve is possible with just that little thin ribbon as the radiating element. OR, if it does then the max SPL possible has to be scary low.
Maybe for you will be scary low but for me is big enough.

The thickness spec'd in the post is ~10x the usual thickness for a tweeter, btw...
You mean 0.0005mm. I want to see 2m ribbon with 0.0005mm thickness
What you want to say, you doubt in high freq. response of my speakers too?
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Old 9th February 2005, 11:29 PM   #15
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Tomislav you have a very beautiful design, how do you get such impressive low frequency output from your ribbons?

I would love to hear those in action
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Old 9th February 2005, 11:56 PM   #16
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Quote:
Originally posted by OGIaudio
What is between the .5 ohm ribbon and the output of your amplifier?
Please sorry, I can't tell you now.


So, then it isn't really "direct drive"??

Quote:

Someone is being silly?
My dear Bear...

I highly doubt the veracity of the published frequency response curve is possible with just that little thin ribbon as the radiating element. OR, if it does then the max SPL possible has to be scary low.
Maybe for you will be scary low but for me is big enough.

The thickness spec'd in the post is ~10x the usual thickness for a tweeter, btw...
You mean 0.0005mm. I want to see 2m ribbon with 0.0005mm thickness
What you want to say, you doubt in high freq. response of my speakers too?
I believe that the spec'd thickness of the Winey patent is 0.0005"
not mm... perhaps we have a metric vs. English units misunderstanding? I have no idea how thick 0.005mm is... hee hee...

But even so, you can't be getting much more than something on the order of ~80dB/1w/1m from them, right? Not with that bandwidth... and at around 90dB they'll try to rip themselves apart, no?

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Old 10th February 2005, 12:30 AM   #17
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Tomislav you have a very beautiful design, how do you get such impressive low frequency output from your ribbons?
Thank you, with big low resonance ribbon and big panels.

So, then it isn't really "direct drive"??
I don't use transformer.

But even so, you can't be getting much more than something on the order of ~80dB/1w/1m from them, right? Not with that bandwidth... and at around 90dB they'll try to rip themselves apart, no?
NO
My ribbon drivers are very efficiency and they can be very loud on freq. above 100Hz.
Sorry, I don't know in numbers.
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Old 10th February 2005, 01:07 AM   #18
Paul W is offline Paul W  United States
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It is one of those translation things . I believe .005 mm = 5 microns...only about half the thickness of some commercial ribbons and about the lower limit for reasonable handling.
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Old 10th February 2005, 02:37 AM   #19
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From my spreadsheets....some rough estimates and guesses....

A 2m x 17mm x 5 micron pure aluminum ribbon is 340.6 cm^2 area, 0.62 ohms, capable of 82db SPL @1m at 40Hz with +/- 4mm of excursion (+/- 0.16") on a 24" wide dipole baffle. Music has large peaks >10 db typical, and >20db for techno or 1812 overture type stuff, so the average listening level will be closer to 70db SPL @ 1m at 40hz

The 6 ohm impedance discussed could come from putting a 5.4 ohm resistor in series to make the load more amplifier friendly, or a series RLC equalization network that compensates for the dipole baffle width roll off
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Old 10th February 2005, 08:55 AM   #20
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A 2m x 17mm x 5 micron pure aluminum ribbon is 340.6 cm^2 area, 0.62 ohms
Yes, you are right, maybe I have 6-7 micron alu. ribbon, it is difficult to measure.

Music has large peaks >10 db typical, and >20db for techno or 1812 overture type stuff.
Yes, my speakers works best with Jazz music, I can't listen loud a records with large low freq.
Maybe before I offer my speakers I will must put sub for freq. below 100Hz.
But I'm not sure which kind of sub system.
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