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Forum topic by paulburch posted 05-15-2013 11:05 PM 1546 views 3 times favorited 32 replies Add to Favorites Watch
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paulburch

33 posts in 1262 days


05-15-2013 11:05 PM

Topic tags/keywords: resource cherry veneering

This past week my son and i got together to start somthing we have talked about for a while, building speakers. Fully laminated mdf sub-strait is really not my bag, instead for years i have been telling my son only if we can build a solid wood carcass with 2 laminated baffles (front & back) these are a full range ported 4ā€¯approx driver (alpair 7c) what i was wondering was are there some woods more suited to speaker design or is mdf really the best in terms of sound quality, i kind of know the denser the better but that is it
we are building 2 pairs one in cherry with tigerwood front hand cut veneer panels,my sons choise the other in shedua for me veneers not choosen yeat . we will be able to compair the 2 and see if there is any diff.
http://paulburchellwoodworking.com/

-- paul burchell


32 replies so far

View Holbs's profile

Holbs

526 posts in 696 days


#1 posted 05-15-2013 11:57 PM

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DocSavage45

5045 posts in 1509 days


#2 posted 05-16-2013 02:01 AM

Before mdf, we use to use particle board as it is dense and is easy to laminate, or put on a veneer. We also use to do a tuned port to adjust the folding horn effect for the inside baffle. But that was a LOOOOOOOng time ago.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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knotscott

5484 posts in 2042 days


#3 posted 05-16-2013 09:52 AM

For a home speaker that reproduces recorded sound, a neutral sound is desirable. MDF, MDO, particle board, and high grade plywood are good choices….they’re more inert and acoustically neutral than many other materials. I think some confusion exists because speakers used to produce live sound (like a guitar or vocal speaker) tend to made of tone woods that actually have a sound signature.

-- Happiness is like wetting your pants...everyone can see it, but only you can feel the warmth....

View Jay Wells's profile

Jay Wells

58 posts in 559 days


#4 posted 05-16-2013 11:18 AM

You may find this helpful

http://www.home-speaker.net/speaker-box-design.html

Rock On!

-- Find your limitations, and ignore them!

View CessnaPilotBarry's profile

CessnaPilotBarry

892 posts in 777 days


#5 posted 05-16-2013 06:42 PM

“I think some confusion exists because speakers used to produce live sound (like a guitar or vocal speaker) tend to made of tone woods that actually have a sound signature.”

Not in my experience… Most everything good in the live world is made from exterior grade baltic birch plywood, and is often braced to eliminate box resonances. I’ve mixed many, many, shows on rigs including Turbosound, EAW, ServoDrive, Clair, Showco, JBL, and EV, in both pre and post invention of the line array configurations.

There may have been a guitar amp here of there of solid wood, but even most of those are usually finger-jointed plywood under the vinyl or carpet.

-- It's all good, if it's wood...

View MrRon's profile

MrRon

2848 posts in 1910 days


#6 posted 05-17-2013 04:57 PM

You can use any material you want as long as the structure of the enclosure is stiff enough so it doesn’t introduce unwanted resonances that will distort the sonics. I made one a long time ago that was double wall construction filled with sand for low resonance. Off course I was using a 12” woofer. At the lowest frequency, you should not be able to feel any vibration on the surface of the enclosure.

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unbob

420 posts in 570 days


#7 posted 05-17-2013 05:23 PM

Knotscott mentioned musical instrument speakers.
Those are different. Solid wood like pine or spruce is the ticket.
Playing a guitar through home audio speakers sounds terrible!

The old Fender amps and speaker boxes were box jointed pine, and have a sound of their own. Like Luther Perkins “Johnny Cash”.

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CessnaPilotBarry

892 posts in 777 days


#8 posted 05-17-2013 09:40 PM

Playing a guitar through home stereo speakers sounds terrible for many, many, reasons… The composition of the box is pretty far down the list.

The old Fender Tweed amps that were pine also included different drivers, as well as different amp circuitry, than newer plywood versions. I’ve heard old drivers in newer boxes, driven by old amps, and well… they sound an awful lot like the old. I’ve mixed a lot of them…

From the early-60’s on, pretty much everything from Marshall, HiWatt, Vox, Fender, Ampeg, etc… was plywood, with the cheaper stuff being particleboard.

But since the OP is building stereo speakers, I think we can all agree that the dense stuff is the way to go.

-- It's all good, if it's wood...

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Holbs

526 posts in 696 days


#9 posted 05-18-2013 03:34 AM

i, too, have added building speakers on the to-do list maybe by end of year or start of next year. always wanted to build LOUDspeakers of quality.. like the ‘ol Infinity Kappa 7’s. Monster Speakers, not surround sound or reference speakers. 4’ or 5’ tower speakers. The kind of speakers you fear when it comes time to move

View paulburch's profile

paulburch

33 posts in 1262 days


#10 posted 05-20-2013 12:57 PM

Thanks for all your input i may biscuit and glue together one mdf box also just so i can compare the sound of all three
to see if there really is a differance

http://paulburchellwoodworking.com/

-- paul burchell

View Bullet's profile

Bullet

150 posts in 1996 days


#11 posted 05-20-2013 01:21 PM

Best resource for speaker building I’ve found is www.parts-express.com. I’ve built a few with their stuff. Good quality and great prices. VERY knowledgeable staff as well.

-- Anything is possible when you have no idea what you're talking about.

View paulburch's profile

paulburch

33 posts in 1262 days


#12 posted 05-20-2013 01:43 PM

I am completely relying on my son for the electronic side of this build, the drivers are designed by Markaudio and i believe the developer,s name is Evan Yu, they seem to have some very high ratings
http://creativesound.ca/details.php?model=ALPAIR7C

-- paul burchell

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guitchess

82 posts in 2375 days


#13 posted 05-20-2013 02:03 PM

I don’t recommend using solid wood for your boxes. The resonant frequencies of solid wood are much higher than composite panels like mdf, think xylophone. Furthermore, because of the grain structure of solid wood, there is usually much more sustain. This trait will cause signal coloration in the more audible frequency zones which are not easily controlled with batting/porting/internal baffling/electronic filtration.

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DocSavage45

5045 posts in 1509 days


#14 posted 05-20-2013 03:29 PM

This has been a good thread. There is a subjective element of preference as well as the technical issues of resonance and response. It also depends on your hearing range. :) Have a great time. And report back.

-- Cau Haus Designs, Thomas J. Tieffenbacher

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Holbs

526 posts in 696 days


#15 posted 05-20-2013 10:53 PM

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