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Multi-Way Conventional loudspeakers with crossovers

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Old 24th June 2006, 08:59 PM   #1
tade is offline tade  United States
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Default New apartment, new system.

This system is the culmination of many months work all initiated upon seeing a pile of large horns poking out of a campus dumpster.


The high frequency drivers are altec model 288c. They are mounted to 450hz pine tractrix horns.
http://www4.ncsu.edu/~tkwolick/right top.JPG
http://www4.ncsu.edu/~tkwolick/right corner.JPG
http://www4.ncsu.edu/~tkwolick/left above.JPG

the bass drivers are slightly modded dayton rs 12 hi fi subwoofers in two cubic foot selaed boxes.
http://www4.ncsu.edu/~tkwolick/bass feet.JPG

Sources are my laptop,a free philips dvd player, and a slightly modded Pioneer pl518 automatic return record player.
http://www4.ncsu.edu/~tkwolick/back right.JPG
http://www4.ncsu.edu/~tkwolick/Pioneer pl518.JPG

Crossover is a nakamichi variable frequency second order active crossover set to 550hz. Amps are and NAD integrated reciever and an Adcome 555 power amp.
http://www4.ncsu.edu/~tkwolick/sand stack.JPG

If you have any questions please ask.
http://www4.ncsu.edu/~tkwolick/some vinyl.JPG
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Old 24th June 2006, 09:38 PM   #2
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Some old, some new. Pretty cool.

Did you turn that horn?
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Old 25th June 2006, 01:31 AM   #3
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Very nice work on the horns there. In what way did you modify the Dayton woofers and how are the results?
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Old 25th June 2006, 01:32 AM   #4
tade is offline tade  United States
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jigsawn, each ring. Then glued and smoothed with a rasp. I dont want to do it ever again. Of course tha means that my next set will be carbon fiber...
These speakers are a great compromise

One mod done, and one in the works. The main one was that I covered the dust cap with felt. I used a water soluble glue stick so the mod is rediulously easy to undo. I found that this smoothes out this driver's roll off to an extreme degree. This makes the woofer play up to 500 quite well. I find that the outer aluminum cone is sufficiently damped by the surround. The second mod is more of a fix. I find that the tinsel leads may be stressed at their boundary with the spider so I indent to shoot some hotglue on that area to reinforce them.
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Old 25th June 2006, 03:54 AM   #5
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amazing gear and amazing albums!!
pink floyd, king crimson, metallica, acdc!! great!
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Old 25th June 2006, 04:35 AM   #6
jleaman is offline jleaman  Belgium
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Only change i would make would be to put that heavy adcom on the floor and let the other stuff sit on top of it
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Old 25th June 2006, 02:07 PM   #7
tade is offline tade  United States
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yes, the vinyl gods have been very very kind to me. I had and uncle with a very cool taste in music and have been keeping my eyes pealed! I love that fact that I can pick up used vinyl locally for so cheap 3 to nine bucks a record. That makes impulse music buying possible!

You wanna talk about heavy, back when I was running a sub and two sats, I used a bogan SS pa amp that I also found in a campus dumpster for the subwoofer. It had probably a 25 lb opt. It was a beast. You are very observant and correct, the adcom should be below, but it is shallower than the other stuff! so my current system of using tuna fish cans to separate equipment would not work... : )

I would be very impressed with any sytem successfully mounted especially with a plasma screen! Someday I hope to have a projector shining on a screen the size of my window. That will be the day!
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Old 25th June 2006, 05:42 PM   #8
jleaman is offline jleaman  Belgium
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Here is how i have my stuff setup.



Click the image to open in full size.
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Old 25th June 2006, 10:21 PM   #9
kevinkr is offline kevinkr  United States
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I'm impressed, really cool implementation Edgar Horn style horn with those Altec 288, lots of work for sure..

I'm frankly envious, great wood working skills, and dumpsters full of audio gold to pick though. Check out the price of mint 288's on eBay sometime and you'll see exactly what I mean.

This set up screams tubes dude!

Kudo's on your system, I remember few in college who pulled it together quite as well in my day, and certainly not me. Solid start in DIY at 15, but with money and time believed for a while that the manufacturers could do it better. I now know a lot better.
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Old 26th June 2006, 12:36 AM   #10
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by kevinkr
I'm impressed, really cool implementation Edgar Horn style horn with those Altec 288, lots of work for sure..

I'm frankly envious, great wood working skills, and dumpsters full of audio gold to pick though. Check out the price of mint 288's on eBay sometime and you'll see exactly what I mean.

This set up screams tubes dude!

Kudo's on your system, I remember few in college who pulled it together quite as well in my day, and certainly not me. Solid start in DIY at 15, but with money and time believed for a while that the manufacturers could do it better. I now know a lot better.


The system consists of

Tower speakers now as the one's in the picture were on loan to see if liked them or not. I did like them but still needed a tweeter, i set one on top and was happy.

Right now i'm running my 2.5 way towers and 4 aleph mini a's and a sony cd-player with a passive volume pot. Sound ? Well TO ME it sounds perfect i have a few things to change and new speakers to build but it all takes time. Im working on a buffer volume pot for this project tho.
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