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13th December 2010, 04:17 PM
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#1 |
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diyAudio Member
Join Date: Feb 2010
Location: Kansas City
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My first DIY speaker
HiVi B3N
8" Concrete mold tubing 3/4" MDF 2" PVC pipe. Total investment $27.50 Pretty flat all the way down to 100hz. A little spike in the upper mid makes them sound a little shouty, could definitely do with a filter. They don't image or sound stage very well, but are clean and clear. This is just a quick and dirty test enclosure, not sure where I will go from here. |
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13th December 2010, 07:52 PM
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#3 |
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diyAudio Member
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Agreed.
I wonder what's wrong with the imaging etc? Is there anything obstructing the space between them? I'd add some acoustic lining to the walls, see how that helps.
__________________
"Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html
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13th December 2010, 08:00 PM
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#4 |
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diyAudio Member
Join Date: Jun 2005
Location: Copenhagen, Denmark
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The shouting in the upper midrange is due to baffle-step attunation. Mounting a speaker in the end of a tube is unfortunately, though asthetically pleasing, perhaps the worst possible location from an audio quality perspective.
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13th December 2010, 09:23 PM
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#5 |
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diyAudio Member
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True, but it'd be much worse in the centre of the circle. Offsetting the driver as shown will have helped.
__________________
"Throwing parts at a failure is like throwing sponges at a rainstorm." - Enzo My setup: http://www.diyaudio.com/forums/multi...tang-band.html
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13th December 2010, 09:39 PM
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#6 |
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diyAudio Moderator
Join Date: Nov 2005
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13th December 2010, 11:32 PM
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#7 | |
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diyAudio Member
Join Date: Feb 2010
Location: Kansas City
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Quote:
 I've looked at Zaph's before and honestly all the little details he goes into was off putting for my first project. I played my speakers all day at work today to break them in so when I got home I decided it was time to turn them up a bit.. Yeah.. At higher power they turn into a boomy, muddy mess. Another thing I noticed. The sweet spot is VERY narrow. You have to point both the drives directly at you for it to sound right. Off axis the highs almost disappear. |
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14th December 2010, 12:25 AM
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#8 | |
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diyAudio Moderator
Join Date: Nov 2005
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Quote:
 but a small 80db 3" driver is ofcourse not intended for higher SPL enjoy what its good at and worry less about what it cant do but your box looks very big, and porting looks big maybe its tuned lower than it likes to you could try putting a sock in the port btw, try to turn the box, so that the driver is either to the left or to the right, maybe it will change some |
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