Home made/DIY speakers

Wooferman93

My systems louder
Here are some speakers I had made from the spare parts I have had laying around for a few months or years depending on the components. The short ones use some generic 15 inch poly woofer that I *think* may be a Pioneer with some midranges out of some crap fisher speakers and some tweeters out of a old pair of Realistic bookshelf's. I used the x-over from the Fishers and added an inductor for the woofer. They seem to work well for some speakers that were slapped together. The bass kinda sucks but they get loud. Made the boxes from 3/4 inch plywood. Braced them as well. There well made.

Taller pair is made of 3/4 inch MDF for the front and half inch for the sides and rear. No bracing, does not seem to really vibrate or anything. The 10" woofers I got from the buy out section at P.E. and the tweeters came out of an old Curtis Mathes TV. Again they arent really well engineered but they seem to work out well. Again, the bass sucks, but its all good Im building a few subwoofers anyway. but the vocals are pretty good on these, and those tweets seem to do a good job for being generic cone tweeters. They crank too.

Then I also got some smaller bookshelf speakers coming up soon.

So feel free to post your home made speakers! :D Its always fun to experiment with old parts that are laying around I think.
 

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Two of my latest builds

DSC_2328.jpg

http://www.audiokarma.org/forums/showthread.php?t=455686

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http://www.audiokarma.org/forums/showthread.php?t=449501
 
SirByrd
Can we get more info on that finish, and maybe a close-up picture? (On the above 4-way tower)
Thanks
 
Wooferman if you are not getting base out of those big boxes I would think your midrange and tweeter is overpowering the woofer. The mids and tweets you mentioned are very efficient and the woofer are not.:thmbsp:
Ed
 
Wooferman if you are not getting base out of those big boxes I would think your midrange and tweeter is overpowering the woofer. The mids and tweets you mentioned are very efficient and the woofer are not.:thmbsp:
Ed

Your right. I mean its there, but you gotta turn them up a bit to hear it. If I had more money for it I would install better woofers and call it a day lol.
 
My old GAMMA 50's, designed by Audioscan and built by my dad in 1975.
They just got a new baffle and KEF B110 mids in place of the old GAMMA BK138A's.
They still need a new crossover network, luckily I will get help with that from a pro who has all the fancy measuring equipment.

f6a52b31_GAMMA50.jpeg
 
What drivers ya got on those EV horns? You did orient them correctly, looks good! That cab be a good mid horn when xover correctly..... all of them look great!
DC
 
What drivers ya got on those EV horns? You did orient them correctly, looks good! That cab be a good mid horn when xover correctly..... all of them look great!
DC

Mid horn, what do you mean?

The EV? horns are part of the GAMMA VLD-12 AlNiCo true ribbon tweeters, clones of the famous DECCA DK30.
http://www.diyaudio.com/forums/multi-way/38633-supravox-tweeters.html
http://www.diyaudio.com/forums/mult...-ribbon-vld-13-application-advice-needed.html

900x900px-LL-449d4fdc_VLD-12.jpeg


The bass woofers are GAMMA BK3013A's with AlNiCo magnets, very loose suspension and a vary light cone.
These are very fast and detailed woofers, very different then the kind of woofers you find on modern speakers.

This blog has measurements of the LA1231
http://drboar.blogspot.dk/

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Since a lot of DIY speaker interested people will come by this thread, I'll just post links and pics that will answer most questions about GAMMA's.

All the drivers needed to make a GAMMA speaker are available at hifikit.se yes they still make them and have done so since the early 70's.
The modern equivalent of the VLD-12 is the VLD-13, they are pretty much the same, the VLD-13 just has a mounting mechanism for the ribbons, it still has AlNiCo magnets, the LA1231 doesn't.

These are drawings for a different GAMMA 50 model, same drivers though (the GAMMA LA1231 is the same as my BK3013A more or less).
http://mediaservice.nu/docs/gamma50.htm

gamma50.jpg



Don't wanna' ruin the party with the BK138A mid driver? or do you just prefer a two way system (at the expense of power handling) go for the GAMMA X30.

http://mediaservice.nu/docs/gammaX30.htm

gammaX30.jpg


The extended family incl. my particular GAMMA 50.
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I appologize Adda- it was Sir Byrd I meant to mention on the EV Horns, but your work is quite exceptional none the less!
DC
 
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