Jump to content

Krakin's Dipole Project Baffle Diffraction, Science!


Recommended Posts

So I have been wanting to start this project for some time, but haven't really ever gotten around to it.

I will eventually make this into a 3-way system instead of just 2-way. Along with making amplifiers for each set of these.

This is just a quick prototype I made to help me get a feel of the drivers.

I will try with dipole tweeters soon in the future as I start to experiment further with it.

50E6199D-FC18-416A-AE18-237105493196_zps

A simple small 20W x2 @ 8-Ohm amplifier I got designed.

I will eventually upgrade it to a 50W x2 @ 8-Ohm or a 100w @ 4-Ohm power amp that will be much more complicated to assemble, just much more costly to build a single stereo amp for that one.

10286960_768079633202239_785048242278371

The possible 100w amp if I decide to spend about 10x on components.

It also is not as clean of a signal at a full 2V (the max RMS that my sound card puts out), but should sound much better than the smaller amp.

1519710_768080896535446_7750362223043696

b_350_20_692108_381007_FFFFFF_000000.png

Krakin's Home Dipole Project

http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370

Krakin, are you some sort of mad scientist?

I would have replied earlier, but I was measuring the output of my amp with a yardstick . . .

What you hear is not the air pressure variation in itself

but what has drawn your attention

in the two streams of superimposed air pressure variations at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space

Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears,

thus no formula can achieve a definite effect for every listener.

Link to comment
Share on other sites

  • Replies 61
  • Created
  • Last Reply

Tuned in. Really interested to see how it turns out. Pretty crazy idea

750??! Yeah, fuck that. Fuck this website, fuck SMD, fuck Steve, fuck all of his butt buddy mods, and their couches.

^ DON'T BE A DICK LIKE THIS GUY :)

Team Subsonic Lows

Link to comment
Share on other sites

I have a clear lack in the lower frequencies.

If I don't sit about 2-3 feet away from it it becomes a great example of how the design works.

I don't have a means of measuring the output over a band of frequencies yet, but the midrange (350-2k Hz "ish") excels tremendously in the test CD's.

The tweeter seems to be a little quite -that could be because of equalization at this point-, but overall the performance is astonishing.

In a future design I am planning on a clamp system to mount the mid-range to the enclosure instead of have it mounted to the baffle.

I was going to head to the department store for a few supplies after track, but I pulled my hammy and I just wanna rest it.

The design would be as follows.

driver-mountg1.gif

driver-mountg3.gif

What happens, is that in design A with the driver screwed to the baffle through the provided mounting holes creates a mechanical resonance between the basket and the magnet. You can help lower the resonance by putting a rubber grommet between the frame and the baffle. However, the only surefire way to rid of the resonance completely is by mounting the magnet of the driver to a clamp and holding the driver in place by this form (C above). When mounting you make sure that the rim of the basket only touches the baffle ever so slightly to minimize or negate the vibration.

I will also invest in some vibration dampeners in the future as well to help with panel resonance, along with messing with baffle thicknesses.

b_350_20_692108_381007_FFFFFF_000000.png

Krakin's Home Dipole Project

http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370

Krakin, are you some sort of mad scientist?

I would have replied earlier, but I was measuring the output of my amp with a yardstick . . .

What you hear is not the air pressure variation in itself

but what has drawn your attention

in the two streams of superimposed air pressure variations at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space

Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears,

thus no formula can achieve a definite effect for every listener.

Link to comment
Share on other sites

Oh and, all of my testing will be done off a single 80 w @ 4-Ohm

Mossvalve MV-962

b_350_20_692108_381007_FFFFFF_000000.png

Krakin's Home Dipole Project

http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370

Krakin, are you some sort of mad scientist?

I would have replied earlier, but I was measuring the output of my amp with a yardstick . . .

What you hear is not the air pressure variation in itself

but what has drawn your attention

in the two streams of superimposed air pressure variations at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space

Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears,

thus no formula can achieve a definite effect for every listener.

Link to comment
Share on other sites

looks like a RF T3.....or at least a bootleg RF T3 LOL

cool project, you are nerdier then i thought you were, i like! :D


All SMD products + MORE available at my store here! https://wccaraudio.com/ 
wc2022-red-black-whitebg_1667625898__08138.original.png.02e514af82dce531edf1aa4a36851c60.png

Subscribe to My Youtube Channel! Over 1,000,000 subscribers strong! Turn on your notifications!
http://www.youtube.com/meade916

 

Follow My Instagram! Daily live feeds from the shop, exclusive content way before it hits my Youtube channel...and little squares with photo's in them :D
http://www.instagram.com/meade916

The Official SMD Facebook fan Page
https://www.facebook.com/SteveMeadeDesigns/

Follow my Tweet (Twitter)
http://www.Twitter.com/meade916
 

 

 

Link to comment
Share on other sites

looks like a RF T3.....or at least a bootleg RF T3 LOL

cool project, you are nerdier then i thought you were, i like! :D

You should see his thick ass glasses he puts on when he works on this.

7w1lnOR.jpg

2004 Bagged Trailblazer

(4)18" Sundown Nsv3s
(4) Taramps HD10000s, Taramps DSP3000, Lanzar opti 250x2, AB 100x4
(2)DC power SP 270s, (14)XS Power d3100s, (1)d6500

 

Link to comment
Share on other sites

looks like a RF T3.....or at least a bootleg RF T3 LOL

cool project, you are nerdier then i thought you were, i like! :D

Those T3's are legit.

I just weighed how much time I listen to music at my computer to how much I drive and decided I could use them for this instead.

The being that the parameters of the mid-range fit the ball parking range to be able to perform adequately in a dipole enclosure.

b_350_20_692108_381007_FFFFFF_000000.png

Krakin's Home Dipole Project

http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370

Krakin, are you some sort of mad scientist?

I would have replied earlier, but I was measuring the output of my amp with a yardstick . . .

What you hear is not the air pressure variation in itself

but what has drawn your attention

in the two streams of superimposed air pressure variations at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space

Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears,

thus no formula can achieve a definite effect for every listener.

Link to comment
Share on other sites

  • 3 weeks later...

I finally got to get the other speaker built to go along with the first.

5FC580FE-863D-4DDF-9CA9-020A21E3B339_zps

I get some irritating spatial loading from the left speaker from the due to the wall being so close.

As soon as we get our wood floors installed downstairs and my "theater room", I will be able to move into there for a much more beneficial environment.

I have as well been looking at acquiring an Onkyo TX-NR828 to be my first receiver. I have grown irritated at trying to work around my PC audio sources.

http://www.onkyousa.com/Products/model.php?m=TX-NR828&class=Receiver&source=prodClass

I plan in the future to still build my own amplifier for everything. The final goal will be to have at least a 5.1 system with every speaker its own amplifier.

I also get some nasty resonances from my desk around the lower vocals that is very annoying when listening to movies. To combat this I will either get isolation mounts or have the speakers free-hang from the ceiling, the only problem will be trying to map the radiation patterns as these speakers are EXTREMELY directional.

b_350_20_692108_381007_FFFFFF_000000.png

Krakin's Home Dipole Project

http://www.stevemeadedesigns.com/board/topic/186153-krakins-dipole-project-new-reciever-in-rockford-science/#entry2772370

Krakin, are you some sort of mad scientist?

I would have replied earlier, but I was measuring the output of my amp with a yardstick . . .

What you hear is not the air pressure variation in itself

but what has drawn your attention

in the two streams of superimposed air pressure variations at your eardrums

An acoustic event has dimensions of Time, Tone, Loudness and Space

Everyone learns to render the 3-dimensional localization of sound based on the individual shape of their ears,

thus no formula can achieve a definite effect for every listener.

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.




×
×
  • Create New...