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Old 11th January 2012, 04:38 PM   #1911
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How so? He asks playing a bit of devil's advocate here to make sure we're all on the same 'page'.
Excluding Frugel-Horn Mk3, most of the drivers that are put in horns will not work in my my miniOnken.

But thinking about it, Scott has used the same MA drivers in his horns that i use in the miniOnken, so a generalization cannot be made.

On the other hand, the Fostex used in Scott's horns won't work in a miniOnken (they can be aligned the same but make no bass -- ie FE126En in miniOnken alignment makes about 120 Hz)

Why i look at each driver on an individual basis. I'm going to guess that what Tom is angling at is to put the Korean driver into his Sachiko. None of the drivers known to work in it, work in my miniOnken and visa-versa (that would have coloured my statement)

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Old 11th January 2012, 07:22 PM   #1912
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Originally Posted by chrisb View Post
well, there's "bigger" (say 15-20 liters per driver per EL70), then there's BIG - a la Kleinhorn
'Bigger' as in much larger than Vas for a vented alignment [~30.94 L MLTLs = ~5.072*Vas] as opposed to some folks dogmatically declaring no driver should be vented beyond its Vas, though I'm not against truly BIG vented either if done right.

The trade-off of course is reduced LF power handling, so as always, in-room performance is a balance of room gain curve Vs speaker power handling, but the larger, lower tuned speaker has more in-room tuning flexibility and normally once dialed in has an audibly close/same perceived performance of a large sealed alignment except with more gain BW, which usually means a superior performance overall than a smaller, higher tuned alignment IME.

This assumes a typical stereo layout of course, so normally doesn't apply to bookshelf, near-field monitors, etc., though a pair of 126E? floorstander BIBs really 'opened up' once set on top of the large corner table they had been beside.

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Old 11th January 2012, 07:24 PM   #1913
Nanook is offline Nanook  Canada
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Default very nice, and glad you like them...

jleaman: They look very well done (kudos to Bernie). From my limited experience with him, he is a dedicated guy with excellent skills and is extremely generous. What tweeters are you using? What caps (Dave?)

I can't say I love the colour, but who cares? It's the sound that's the magic
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Old 11th January 2012, 09:06 PM   #1914
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jleaman: They look very well done (kudos to Bernie). From my limited experience with him, he is a dedicated guy with excellent skills and is extremely generous. What tweeters are you using? What caps (Dave?)

I can't say I love the colour, but who cares? It's the sound that's the magic
will get cap value when i get home, as im out of the country.

Tweeter was from dave ( did a swap ) G2si

Color will be changed for sure Was a free pair of experimental drivers and they still work very well. Now im hooked and want a brand new set

The best part about all this, the wife approved LOL free speakers and they look dam good. Bernie has a GREAT eye for detail..
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Old 11th January 2012, 09:52 PM   #1915
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Tom,

Your pictures are MIA



Generally no. And the opposite is also generally the case.



Specs?

dave
Dave that's strange, but I'll respost the photos. As you can see Sonodyne will sell you the SD-855FS which consists of a pair of SD-855 drivers in an Onken/Fonken enclosure for $1380 in S. Korea. Of course then you'd have to pay to have them shipped, insured to the USA.

Click the image to open in full size.

Or if you prefer you can obtain the SD-855 drivers drivers by themselves for $700pr in S. Korea, but once again you'd have to pay to have them shipped, insured to the USA in addition to the initial charge of the drivers.

Click the image to open in full size.

Sonodyne makes many different drivers using Hanji paper including various dome tweeters and even their version of a Walsh driver made from Hanji paper for $5200pr in some nice looking enclosures as seen here:

Click the image to open in full size.

Finally you can check out Sonodynes many different types of drivers that use Hanji paper here: Sonodyne of S. Korea

I'm going to try a pair of the eight inch, Hanji paper SD-855 fullrange drivers to see how they sound.

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Old 12th January 2012, 02:20 AM   #1916
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in an Onken/Fonken enclosure
Note Tom, that they may well be in an Onken, but Fonken is a P10-hifi trademark/design and althou they have a passing similarity to an Onken, they are not tuned the same way. You would not likely see a vent that wide on a P10-hifi Fonken/miniOnken box.

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Old 12th January 2012, 05:30 AM   #1917
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Right, it's my understanding that the original Onken [the brand name] were little ducted port monitors after Jensen, so doing a QB3 alignment with [6] vents in WinISD Pro pretty much spits out the box shown in ~ size, though as is also my understanding, it doesn't meet the vent area criteria of the Onken alignment we know today.

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Old 12th January 2012, 07:30 AM   #1918
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Note Tom, that they may well be in an Onken, but Fonken is a P10-hifi trademark/design and althou they have a passing similarity to an Onken, they are not tuned the same way. You would not likely see a vent that wide on a P10-hifi Fonken/miniOnken box.

dave
Dave I meant no offense and certainly hope none was taken when I refered to the Sonodyne enclosure for their SD-855 drivers as being either an Onken or Fonken. I was just refering to the only two enclosure types that I knew of that looked the most similar to what I was seeing, that way other diyAudio readers would understand what I was refering to when I was attempting to describe the enclosures they came in.

When I finally get the Sonodyne SD-855 drivers delivered I'll be sure to post their specs here on diyAudio.com so that those who are more knowledgeable about drivers can tell me what enclosure type would be optimal! That is provided Sonodyne furnished the specs with the drivers when I receive them.

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Old 12th January 2012, 04:11 PM   #1919
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OT - Is it just me, or does using a single cone material (even of very high quality) such as apparently depicted in the Sonodyne "Walsh" inspired full-range system seem counter to the original design brief of using three materials with considerably different densities and thicknesses?

IIRC it was titanium, aluminum and fairly thick pulped paper.

back to the regularly scheduled programme
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Old 12th January 2012, 04:21 PM   #1920
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OT - Is it just me, or does using a single cone material (even of very high quality) such as apparently depicted in the Sonodyne "Walsh" inspired full-range system seem counter to the original design brief of using three materials with considerably different densities and thicknesses?

IIRC it was titanium, aluminum and fairly thick pulped paper.

back to the regularly scheduled programme
wow, my brain hurts after reading that..
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