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Great computer speakers

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#juan
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#1Feb 20th, 2007
My son just built a set of these. They each use just one 3 and a half inch Fostex full range driver, about thirty dollars each, and five dollars worth of used plywood. They are a horn design that is very efficient and they absolutely fill a room. 89 decibals at 1 watt. I've just about finished mine...can't wait to get them going. Is anyone is interested?




 
Kreskin
#2

Re: Great computer speakers

Feb 20th, 2007
Nice work.
 
sanctus
#3

Re: Great computer speakers

Feb 20th, 2007
To quote the young "sweeeeeeeeeet". How old is your boy?
 
lieexpsr
#4

Re: Great computer speakers

Feb 20th, 2007
Absolutely interested and a covering of oal veneer which can be purchased at Windsor plywood on Boban will make them lood great! Is there some kind of sound deadening material in the plastic bag at the bottom? Sawdust? Rocks?

Do help him with the veneer work!
 
#juan
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#5

Re: Great computer speakers

Feb 20th, 2007
My son is thirty eight years old. These photos are from the site of the sound engineer who designed them. My son used 3/4 inch oak for his and they look great. I'm using some old oak faced plywood and I've mitered all the joins.(no endgrain) I'll post a picture when they are finished. Horn technology is used a lot by people like Bose.

Here are some really advanced horn designs.

 
DurkaDurka
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#6

Re: Great computer speakers

Feb 20th, 2007
Juan,

You need to get your self a good sound card to do those speakers some justice.
 
#juan
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#7

Re: Great computer speakers

Feb 20th, 2007
Quote: Originally Posted by DurkaDurkaView Post

Juan,

You need to get your self a good sound card to do those speakers some justice.

The last set of speakers are almost two meters hight. and are meant for a conventional stereo. The smaller speakers will do very well with a few watts. If you happened to have a ten watt sound card they do very well. I can't believe the amount of base that they put out with so little power.

Last edited by #juan; Feb 20th, 2007 at 10:40 PM..
 
DurkaDurka
#8

Re: Great computer speakers

Feb 21st, 2007
Do the speakers have their own amp?
 
#juan
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#9

Re: Great computer speakers

Feb 21st, 2007
Quote: Originally Posted by DurkaDurkaView Post

Do the speakers have their own amp?

No. My son Eric put together a 10 watt a side stereo amplifier from scratch using transistors, capacitors, and transformers that he had laying around. I don't have that talent. What I have is a $29 dollar Logitech amp and speaker set that I've had for a few years. It has a small sub-woofer and two side speakers. This amp provides ten watts for the sub and five watts for each of the side speakers. I have snipped off the side speakers and I'll add my horn speakers to that system. I have already tested this system on Eric's speakers and it works great.
 
DurkaDurka
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#10

Re: Great computer speakers

Feb 21st, 2007
That's a pretty cool project you have going there Juan. Highs and lows are clear on the speakers?
 
#juan
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#11

Re: Great computer speakers

Feb 21st, 2007
Quote: Originally Posted by DurkaDurkaView Post

That's a pretty cool project you have going there Juan. Highs and lows are clear on the speakers?

Yes, very good. I haven't posted all the pictures but what you do is pack pillow stuffing around the back of the full range speakers to filter out the high frequency stuff. . The highs and midrange come out from the front of the speaker. The long path from the back of the speaker has been tuned to resonate the low frequencies. I was very impressed.......impressed enough to build them..
 
#juan
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#12

Re: Great computer speakers

Feb 21st, 2007
--

There is a growing cult of horn speaker builders and there are some weird and wonderful designs out there.
 
thorswolf
#13

Re: Great computer speakers

Feb 21st, 2007
Those are amazing. Any chance of getting my greedy little paws on some plans??

Thanks
 
#juan
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#14

Re: Great computer speakers

Feb 21st, 2007
Quote: Originally Posted by thorswolfView Post

Those are amazing. Any chance of getting my greedy little paws on some plans??

Thanks

I will post plans as soon as I can. My scanner is acting up right now but I should have that sorted out by tomorrow.
 
#juan
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#15

Re: Great computer speakers

Mar 27th, 2010
I had completely forgotten about this topic. It was three years ago. I'll look around and see if I have any of the drawings still around. I think I was interrupted by a family emergency and never got back to it.. Let me see what I can find.
 
Avro
#16

Re: Great computer speakers

Mar 27th, 2010
Computer speakers!?!?!

Friggin hell!
 
spaminator
#17

Re: Great computer speakers

Mar 29th, 2010
cool.
 
VanIsle
#18

Re: Great computer speakers

Mar 29th, 2010
Quote: Originally Posted by lieexpsrView Post

Absolutely interested and a covering of oal veneer which can be purchased at Windsor plywood on Boban will make them lood great! Is there some kind of sound deadening material in the plastic bag at the bottom? Sawdust? Rocks?

Do help him with the veneer work!

So you are from Nanaimo. Who else would know about Boban? That would likely be Oak Veneer would it not? Do help yourself to spell check.
I just noticed the post is very old -probably a good thing.
Last edited by VanIsle; Mar 29th, 2010 at 06:28 PM..
 
AnnaG
#19

Re: Great computer speakers

Mar 29th, 2010
Quote: Originally Posted by VanIsleView Post

So you are from Nanaimo. Who else would know about Boban?That would likely be Oak Veneer would it not? Do help yourself to spell check.

VI, Juan dragged this thread out from 2007.
 
#juan
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#20

Re: Great computer speakers

Mar 29th, 2010
Quote: Originally Posted by AnnaGView Post

VI, Juan dragged this thread out from 2007.

Actually I didn't.. It was a topic that I kind of forgot for one reason or another. It just appeared on the boards. I built the speakers in question but for some reason I forgot about it.. There was a family emergency back about then and I never got back to it.
 
VanIsle
#21

Re: Great computer speakers

Mar 29th, 2010
Quote: Originally Posted by #juanView Post

Actually I didn't.. It was a topic that I kind of forgot for one reason or another. It just appeared on the boards. I built the speakers in question but for some reason I forgot about it.. There was a family emergency back about then and I never got back to it.

That does seem to happen with some threads sometimes. It's good. Get tired of nothing but politics and religion. Waaay too many religious threads on here. I like yours better Juan.
Anna: Thanks. I did notice that right after I posted and in my attempt to edit it, I got a call so I was a long time getting back to finish.
 
AnnaG
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#22

Re: Great computer speakers

Mar 29th, 2010
Quote: Originally Posted by VanIsleView Post

That does seem to happen with some threads sometimes. It's good. Get tired of nothing but politics and religion. Waaay too many religious threads on here. I like yours better Juan.
Anna: Thanks. I did notice that right after I posted and in my attempt to edit it, I got a call so I was a long time getting back to finish.

My pleasure.
I like his cooking threads the most. Tasty food is a big issue with me. lol
 
shadowshiv
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#23

Re: Great computer speakers

Mar 30th, 2010
Quote: Originally Posted by VanIsleView Post

That does seem to happen with some threads sometimes. It's good. Get tired of nothing but politics and religion. Waaay too many religious threads on here. I like yours better Juan.
Anna: Thanks. I did notice that right after I posted and in my attempt to edit it, I got a call so I was a long time getting back to finish.

Actually, the thread was bumped up by a spammer. His post has since been deleted, which is why it looks like it was bumped by Juan.
 
#juan
#24

Re: Great computer speakers

Mar 31st, 2010
Model 2 with optional grilles...
 
#juan
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#25

Re: Great computer speakers

Apr 5th, 2010
I was in one of the Scource stores yesterday and I picked up a 20 watt per side stereo receiver for twenty bucks as well as a pair of 4 and a half inch dual cone full range speakers from old, Radio Shack stock that I got for five bucks apiece I liked the horn speakers that I built earler and I decided to build a couple more.
 
theconqueror
#26

Re: Great computer speakers

Apr 6th, 2010
Maybe your son could help build car audio speakers as well. When I was a kid I spent over $1000 just for the wood box alone to custom fit my Toyota 4x4.

Your son is a great carpenter, hope his nack lasts.. cool!
 
#juan
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#27

Re: Great computer speakers

Apr 12th, 2010
Quote: Originally Posted by theconquerorView Post

Maybe your son could help build car audio speakers as well. When I was a kid I spent over $1000 just for the wood box alone to custom fit my Toyota 4x4.

Your son is a great carpenter, hope his nack lasts.. cool!

I've called him "my son" for years and I forget once in a while that he is 40 years old. He is a lot better carpenter than I am. He is also a working physicist.
 

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