I'd like to build compact desktop/computer speakers using fe126en driver. It will be powered by a tiny tube amp (1-2W class A triode PP) hence the choice of the driver.
My preferences are:
- cabinet width as narrow as practically possible;
- driver axis height about 1ft from the table surface;
- rear firing port/horn;
- reasonably easy construction.
Currently I am thinking along the lines of folded voigt pipe with rear exit port. Is there any tuned/tested design with similar parameters that I can reuse ?
My preferences are:
- cabinet width as narrow as practically possible;
- driver axis height about 1ft from the table surface;
- rear firing port/horn;
- reasonably easy construction.
Currently I am thinking along the lines of folded voigt pipe with rear exit port. Is there any tuned/tested design with similar parameters that I can reuse ?
I've built several versions of this Folded Monopole design that I've been really happy with. In that thread there are several other single speaker variations that you might like.
Tom.
Tom.
I built a later version of those
http://www.diyaudio.com/forums/full...ce-project-80.html?postid=1143794#post1143794
They're awesome. Enough bass when near a wall, though too close and it loses definition...
I'm fairly sure you could move the opening to the back of the cabinet, though I'd get that confirmed before going off something I've said.
Chris
http://www.diyaudio.com/forums/full...ce-project-80.html?postid=1143794#post1143794
They're awesome. Enough bass when near a wall, though too close and it loses definition...
I'm fairly sure you could move the opening to the back of the cabinet, though I'd get that confirmed before going off something I've said.
Chris
I just realized you are using the fe126en, which is different than either driver, but closer to the fe126e than the fe127e. So...
The one is post 539 is only about 0.5" narrower than the one in post 797 linked by chris661 that I built, if built with 5/8" ply as suggested. The fe127 cab is about 7 1/4" and the fe126 cab is 7 3/4". The one linked by chris661 is designed for the fe126, which is closer to the driver you have. Also, fyi, i have since posting stuffed the cabinets with acoustuff and it made a huge difference in the boomyness and cleaned up the midrange nicely. I had originally bought the fe126 for use in a horn, then decided I wanted them on the desk and these were the only small cabs I found that were designed for them. So, you will probably have better chance with the ones for the fe126e, but you may want to wait until someone designs specifically for the fe126en. Hope this helps.
Chris
The one is post 539 is only about 0.5" narrower than the one in post 797 linked by chris661 that I built, if built with 5/8" ply as suggested. The fe127 cab is about 7 1/4" and the fe126 cab is 7 3/4". The one linked by chris661 is designed for the fe126, which is closer to the driver you have. Also, fyi, i have since posting stuffed the cabinets with acoustuff and it made a huge difference in the boomyness and cleaned up the midrange nicely. I had originally bought the fe126 for use in a horn, then decided I wanted them on the desk and these were the only small cabs I found that were designed for them. So, you will probably have better chance with the ones for the fe126e, but you may want to wait until someone designs specifically for the fe126en. Hope this helps.
Chris
It is not suitable for FE126e or FE126En.
This driver wants a horn. The little FE126 box in the diy FR ref thread can be considered a mass-loaded tapped conical horn.
dave
A suggestion... What're the chances of being able to mount the driver on the side panel of that cabinet? It wouldn't move the driver a huge amount, though I suspect the earlier baffle step could be a problem.
Chris - sounds like I need to try stuffing mine. My ears aren't perfect (previous best build involved cheap Visaton gear), so it sounds like there's more to be eeked out. Thanks.
Chris
Chris - sounds like I need to try stuffing mine. My ears aren't perfect (previous best build involved cheap Visaton gear), so it sounds like there's more to be eeked out. Thanks.
Chris
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You and me buddy, I'm also thinking this should be possible. I had a go at stirring up some interest [http://www.diyaudio.com/forums/full-range/172873-big-littlehorn-fe83en.html] ] but the FE83En doesn't seem suitable for a small horn. I've since got a pair of Fountek FR88Ex's for a simple Fonken type project but I plan to revisit the desktop horn idea - I haven't decided on a design yet.
Thanks, still learning the subject (I have EE and physics background but never done speakers before). So my understanding so far that I need two things in general:
1. internal resonance cavity tuned to driver fs with fe126en driver placed at low amplitude / high pressure point of a standing wave at fs;
2. path delay spread between front and rear of the speaker to the listener should create constructive intereference at the lowest frequency with a sharp low pass filter in the rear path.
1. internal resonance cavity tuned to driver fs with fe126en driver placed at low amplitude / high pressure point of a standing wave at fs;
2. path delay spread between front and rear of the speaker to the listener should create constructive intereference at the lowest frequency with a sharp low pass filter in the rear path.
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