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Multi-Way Conventional loudspeakers with crossovers

Anyone built speakers using real wood?
Anyone built speakers using real wood?
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Old 12th March 2018, 12:54 PM   #11
hal55 is offline hal55
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https://www.bunnings.com.au/marquee-...chtop_p2667635

This is the link to the item at Bunnings Hardware. It looks way better in the flesh than the photo. I'll phone them tomorrow and try and confirm if it is kiln dried and resists shrinkage or swelling.
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Old 12th March 2018, 07:59 PM   #12
Bigun is offline Bigun  Canada
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Anyone built speakers using real wood?
Quote:
Originally Posted by TMM View Post
I have made cabinets with solid wood for all sides. Used regular PVA glue to join the top/bottom/sides as the movement is mutual (cabinet grows and shrinks significantly in depth, minimal dimensional change to width/height). Polyurethane construction adhesive (remains rubbery after setting) to attach the front, rear baffles and internal braces to allow for wood movement. No issues to report several years later.

I have seen people construct solid cabinets and use PVA everywhere. Some of those cabinets tore themselves apart after about a year.
I've just knocked together my first solid wood cab. It's for a guitar amp, all-pine and open back. Everything glued all-over with PVA. I'l check back in a year to see if it's all ripped apart. I hope not. The wood was seasoned in my garage for 20 years. I'll seal the wood inside and out to minimize the affect of humidity changes.
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Old 12th March 2018, 10:11 PM   #13
cochinada is offline cochinada  Portugal
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These are from solid wood.
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Old 12th March 2018, 10:28 PM   #14
mandoman is offline mandoman  Australia
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Yes, I have made 9 pairs of speakers from solid wood, Jarrah, Myrtle and Tasmanian Oak. Top, sides and bottom are solid wood and glued together. The back is also solid wood, screwed on and sealed with a rubber seal to allow movement. The front baffle is either solid wood screwed on like the back, or MDF. The oldest is over 10 years old and no problems from movement. You need to keep the across grain dimensions small, don't glue across the grain, and allow the cabinets to move across the grain. So, small speakers or tall TL's work well.

Some pictures are here
Mandolins By Peter Coombe - Hi Fi Loudspeakers

Last edited by mandoman; 12th March 2018 at 10:53 PM.
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Old 12th March 2018, 10:28 PM   #15
globalplayer is offline globalplayer  Germany
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Real wood?
You mean solid wood?
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Old 12th March 2018, 11:00 PM   #16
scottjoplin is offline scottjoplin  Wales
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From the link provided by the OP : "Made from plantation trees that have already been felled for the latex they excrete" - Eh?
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Old 12th March 2018, 11:13 PM   #17
jtgofish is offline jtgofish
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Quote:
Originally Posted by mandoman View Post
Yes, I have made 9 pairs of speakers from solid wood, Jarrah, Myrtle and Tasmanian Oak. Top, sides and bottom are solid wood and glued together. The back is also solid wood, screwed on and sealed with a rubber seal to allow movement. The front baffle is either solid wood screwed on like the back, or MDF. The oldest is over 10 years old and no problems from movement. You need to keep the across grain dimensions small, don't glue across the grain, and allow the cabinets to move across the grain. So, small speakers or tall TL's work well.

Some pictures are here
Mandolins By Peter Coombe - Hi Fi Loudspeakers
Beautiful work Peter.

I really think jarrah is the obvious choice.It is a slow growing short grained non resonant timber with medium to high density and just seems to sound great.I have also used it for hi fi racks and turntable plinths .
Grado have used it for some of their most expensive wood body cartridges.The darker the better because that usually indicates old growth.
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Old 13th March 2018, 12:21 AM   #18
hollowboy is offline hollowboy  Australia
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Solid wood can work, but I wouldn't use that rubber panel.

I have, in storage, a half-built project glued up from local hardwood, which looks like "vic ash" or "tas oak"*
Horn FAST in timber
...and in the same storage, another half-built project using a rubber wood panel from Bunnings.

The rubber panel shrank and split wide open. The eucalyptus is still fine.

I also had a pair of bass boxes for >10 years that I made from hardwood from a salvage yard, presumably old growth eucalyptus. They were sanded and oiled only once (no varnish / sealer), and there was no splitting / movement at all.

Basically: eucalyptus wins. And check salvage yards and specialist (timber only) retailers, they often have better/cheaper timber than Bunnings.

*Eucalyptus regnans - Wikipedia
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Old 13th March 2018, 12:36 AM   #19
hollowboy is offline hollowboy  Australia
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Quote:
Originally Posted by scottjoplin View Post
From the link provided by the OP : "Made from plantation trees that have already been felled for the latex they excrete" - Eh?
The phrasing is bad, but I think what they mean is that the trees aren't primarily grown for timber. They only produce latex for ~25 years, so the growers have to clear them and plant new ones. The timber sales are just a bonus.
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Old 13th March 2018, 12:59 AM   #20
Jim Griffin is offline Jim Griffin  United States
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I have built most of my prototypes with solid wood side panels for more than 15 years. This includes several 6 feet tall line arrays, many MLTLs (several 4 feet tall), many small monitors, and others. I've built more than 20 prototypes speaker pairs over the years and none of my speakers have come apart.

For my builds I specify kiln dried lumber and generally use MDF for the other panels and bracing. Some of the larger speakers use pocket screw joinery but most feature wood glue joints.

https://us.v-cdn.net/5021930/uploads...9/5/9/6468.jpg

http://greatplainsaudiofest.com/Phot...ineArray01.jpg

You can find photos of my MLTL designs on DIYaudio with a search.

The linked photos show line arrays which are 6 feet tall and more than 10 years old and still going strong. Both feature real 0.75 inch thick walnut side panels.

Jim

Last edited by Jim Griffin; 13th March 2018 at 01:04 AM.
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