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Old 28th February 2009, 08:43 AM   #1
diyAudio Member
Join Date: Aug 2008
Location: Sydney
Default New C-Horn started

Finally after some months of designing and planning, I've put glue to wood and started the build. Fun project...deciding on final colour....probably red like this image.

Have routered a channel into one of the slices to house the cable.

Also created a ribbed wall at the back of the comp chamber to try and eliminate the need for any felt or wool inside. What do people think of this approach?

See the start of the build here -

Driver initially to be used is DX3 Lowther.


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Old 28th February 2009, 11:01 AM   #2
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HI I'm for OB, but your works are fantastic !!!

Ops not real...but nice idea
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Old 28th February 2009, 08:37 PM   #3
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Location: Appleton, WI

Very elegant. Not too big but gig enough.

Whist I don't know about the sound properties of the see through sides it shows off the work nicely.
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Old 1st March 2009, 01:34 AM   #4
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Not too big? 1400mm tall...and weighs close to 80kgs each. I now need to add a couple of braces inside the horn to complete the build. The weight of the larger section below the comp chamber is hard to work with. Next time, I'll design it with that section having a large cut-out...then I'll add wadding to the cavity.

The clear sides are 25mm I'm very confident of the accoustics.

The aim of the speaker is to create a visually attractive speaker, with great audio properties. The horn dimensions are close to the Dallas II.

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Old 1st March 2009, 08:33 PM   #5
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Those things look awesome.
Gotta love those saw horses from Bunnings.


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Old 2nd March 2009, 03:35 PM   #6
kazoo is offline kazoo  United States
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Location: Illinois

I always wanted to do clear side so you can see the inside. But wondered how much that would effect the sound. Can't wait to see those finished.

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Old 2nd March 2009, 05:22 PM   #7
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Location: Appleton, WI
I was wondering how the rib idea could be incorporated in other builds.

Often, I have left the cabinet empty at the beginning and found there is a muffling with many stuffing products.

What is the length of the horn path?
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Old 2nd March 2009, 05:39 PM   #8
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Oh, amazing a band saw's nirvana. cool, please keep us informed
" Glamour will never die ! "
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Old 2nd March 2009, 05:42 PM   #9
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Location: Near Vancouver
Those are a work of art. Great WAF I'm guessing
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
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Old 2nd March 2009, 10:17 PM   #10
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Join Date: Aug 2008
Location: Sydney
Horn path is 2.6m, mouth is 70cm x 30cm. WAF is high...especially if the W can choose the paint colour. Surprisingly, even at 1.4m tall, the speaker doesn' really look large. The width is 35cm.

I'm also working on a curvy Bruce. It will have the same (but more) fluted/wavy sections inside the comp chamber....all at differing angles and 'wave' sizes. I'll post a pic soon. Have been talking with David D on this.

No band saws here...all CNC machined on an industrial router. Computer cut dowel holes ensure the slices all lign up well. I just dowel, glue, clamp, sand, paint and fix sides. The acrylic sides are German made...very good quality. The routing pattern is ientical to the internal slices, except for the 'legs'. The holes in the sides are computer machined and counter-sunk and match the holes where the dowels go. This way, I'm screwing the sides into the dowel wood...not MDF.

I'm also going to build this speaker using varying colours of hardwood slices. A bit more expensive...but should look unreal.

A bit like this pic.

or here

A DIY dream.

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