Lets redesign my nearfields, a fun community project. - AVS Forum
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post #1 of 3 Old 02-23-2012, 11:30 PM - Thread Starter
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I know the title sounds a bit like, "Design it for me" but trust that is not the intent. I'm trying to do something a little different with this little side project. I have some materials sitting around, and some design constraints. I have some idea(s) about how to attack this, but I think it would be fun to engage the community and see what we can come up with together. Whatever we decide on will be built, documented, and measured in this thread. I'll itemize what parts I have, define design constraints, and provide the usage guidelines.



Project intent:
To redesign the pair of nearfield monitors I use on a daily basis for music production, gaming, background music, and teleconferencing. These are the speakers I listen to the most day in day out, and want to execute the highest quality possible. I currently run the monitors off of the Ashly KLR-2000, and an 18" subwoofer behind my chair off a Sherbourn 2-150(the Low Rider is sold, and will become a Sundown Zv3 18 soon). The monitors run full range and are factory passively crossed over, the sub is actively low passed by the berry. The cabinets fit perfectly where I want them to, and don't sound bad but I want to make a project out of them.

This is the setup:







Cabinet constraints:
A pair of sealed .75" BB enclosures, sized OD 10.5" wide, 14" high, and 13.25 deep, sealed with an internal volume of .76ft3, fully stuffed. They currently contain a pair of B&W in-wall loudspeakers(I had a pair sitting around and popped out the enclosures to make a quick pair of speakers). The baffle is part of the speaker and is removable, I'll be replacing the baffle to accommodate whatever combination is chosen. The baffle size is 9.125"w and 12.5"H. Pic:





Current Electronics
:
1 Behringer Super-X Pro 2 way stereo, 3 way mono Electronic Crossover
1 DBX 231 31-Band Graphic EQ
1 Sherbourn 2-150 Amplifier(Driving Subs)
1 Ashly KLR-2000(Driving Monitors)
1 Presonus Firebox

Firebox -> EQ - > Xover -> Amps -> Speaks

Available Electronics:
1 Ashly KLR-3200 Amplifier
1 Belles Soundwave 300 Amplifier
1 Belles soundwave 200 Amplifier
2 Sherbourn 2-150 Amplifiers
1 Crown D150 Amplifier
1 Peavey M2600 Amplifier
1 Alesis 3630 Compressor
1 ART 343 15 Band EQ

Available Drivers:
12 Dayton ND20FA Tweeter http://www.parts-express.com/pe/show...030&FTR=nd20fa
6 Dayton ND-105-8 4" Midrange http://www.parts-express.com/pe/show...number=290-214
2 Dayton PK165-8 6.5" Midrange http://www.parts-express.com/pe/show...-020&FTR=pk165
4 B&C 8MDN51-8 8" Midrange http://www.parts-express.com/pe/show...648&FTR=8mdn51
2 a/d/s 308RS Subwoofer

I am open to different drivers, but I would like to use up some of what I have lying around. A couple of my ideas: 3 way, Isobarically load the B&C 8"s, run a pair of 4" mids, and a tweeter. Or Isobarically load the 8s, run a 6.5 mid and a tweeter. I'm hot for isobarically loading the B&Cs for some reason. I would get a pair of Ashly XR1001 to actively crossover if a 3-way design is chosen.

This could be fun!

 

Originally Posted by Bill Fitzmaurice:
It's also the very sort of Voodoo Engineering that should never be done.

 

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post #2 of 3 Old 02-23-2012, 11:32 PM - Thread Starter
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reserved

 

Originally Posted by Bill Fitzmaurice:
It's also the very sort of Voodoo Engineering that should never be done.

 

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post #3 of 3 Old 02-23-2012, 11:32 PM - Thread Starter
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Originally Posted by Bill Fitzmaurice:
It's also the very sort of Voodoo Engineering that should never be done.

 

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