Hey Martin did you ever own or listen to the old IMF?
http://www.scribd.com/full/14966979?access_key=key-2fgv0hkcbkmxre5go09i
http://www.scribd.com/full/14966979?access_key=key-2fgv0hkcbkmxre5go09i
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Speakerman,
That link takes us to a document on some Fried Kits. Nothing really to do with the IMF speakers (except in that they resulted because IMF didn't want anything to do with Bud anymore).
I sold quite a few prebuilt and in kit form.
Do you know if that document exists in NOT ^&% #$*& Flash? Be nice to have a copy of those for my archives, i haven't seen those since hardcopy in the late 70s.
dave
That link takes us to a document on some Fried Kits. Nothing really to do with the IMF speakers (except in that they resulted because IMF didn't want anything to do with Bud anymore).
I sold quite a few prebuilt and in kit form.
Do you know if that document exists in NOT ^&% #$*& Flash? Be nice to have a copy of those for my archives, i haven't seen those since hardcopy in the late 70s.
dave
The Fried kits have the same roots as the older IMF. I was illustrating the Fried designs showing the enclosures design and damping material placement. I would just print the document. The most you can do is copy and paste it. A wide variety of 10" drivers work well in these enclosres. Adjusting damping density behind the driver the most critical area of the cabinet volume. Small changes in damping density shown in many of his kit plan designs using the same enclosure with different drivers. Examples are O1 ,O2 and O3 models until cabinet designred changed to O4 model.
Actually they are quite different. The Bailey/Radford/IMF have a prechamber (ie they would be traditionally be called a daline). The Fried's are a simple end loaded tapered pipe.
dave
Early IMF lines used wool, but for ease & consistency of production switched to foam.
In the attachment, the prechamber, which takes up ~ 1/3 of the box, is hi-lited.
dave
Attachments
In the end i just made the image as big as i could on my screem and took screenshots.
dave
No, I don't think I have ever seen or heard an older commercial TL. My exposure is limited to DIY designs.
Martin
Slow, but I am making progress. I have some new worksheets and a design I am happy with for the Fostex FE-126E / FF125K / F120A / FX120 / FE-108E Sigma family of drivers. I need to build (or get it built locally) and test it.
I have some ideas for a couple of more elaborate corner horns that I think are very interesting, I need to create some new worksheets to handle the calculatons.
Always something interesting to work on,
Martin
Thanks for the offer. Right now I am keeping most of my newer work to myself until I see how it all comes together.
OK, enough off topic posts from me.
Martin
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