Is plywood good.

[iceteebone 5,000+ posts]

is there a home depot whitin your area? if so they will for sure have it and it will cost you about $20. i live in a shitty little town with no more then 900 people and the crappy little 2-bit lumberyard here has 3/4" mdf.

 

[ighettoboyi 10+ year member]

For The Last Time! Yesssss!!!!!!!!!!

 

[SPL140.2 5,000+ posts]

This is for all the tech guys and may help with choosing:

Below are some typical values for the modulus of elasticity (in million pounds per square inch) and density (in pounds per cubic feet) for MDF, Oak, Pine and Fir Plywood.

Material

MOE

Density

MDF

0.53

48

Oak

1.55

38

Pine

1.3

29

Fir Plywood

1.2

33

The modulus of elasticity (MOE), also called Young's modulus, is the ratio of stress to strain, where stress is the force per unit area placed on the item and strain is the deformation caused by the stress. The MOE is therefore a measure of stiffness.

Q: Can I build speakers with {MDF | particle board | plywood | solid wood}?

A: You can build speakers with whatever you like ! However, MDF is often the material of choice. Its stiffness and density yield good accoustical damping properties. Particle board and plywood are cheaper and can still be used if cost is an issue. Plywood (especially if void free) can be used in the main baffle as a sandwich material to better hold fasteners. Plywood is also a good material for making braces inside speaker boxes. Solid wood (lumber) suffers from movement - the swelling and shrinking of wood due to environmental changes such as humidity - and is therefore not a good material for speaker enclosures. Lumber is also not as acoustically dead as MDF.

There are times however, when plywood, particle board and other common sheet goods are more than suitable for enclosures. Such possible uses include sound reinforcement, musical instrument cabinets, and PA systems.

this came from http://www.bscaust.com/THE%20MDF%20FAQ.htm //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[pd298 10+ year member]

is there a home depot whitin your area? if so they will for sure have it and it will cost you about $20. i live in a shitty little town with no more then 900 people and the crappy little 2-bit lumberyard here has 3/4" mdf.

No there isnt..Its about 30 mins away..

This is for all the tech guys and may help with choosing:Below are some typical values for the modulus of elasticity (in million pounds per square inch) and density (in pounds per cubic feet) for MDF, Oak, Pine and Fir Plywood.

Material

MOE

Density

MDF

0.53

48

Oak

1.55

38

Pine

1.3

29

Fir Plywood

1.2

33

The modulus of elasticity (MOE), also called Young's modulus, is the ratio of stress to strain, where stress is the force per unit area placed on the item and strain is the deformation caused by the stress. The MOE is therefore a measure of stiffness.

Q: Can I build speakers with {MDF | particle board | plywood | solid wood}?

A: You can build speakers with whatever you like ! However, MDF is often the material of choice. Its stiffness and density yield good accoustical damping properties. Particle board and plywood are cheaper and can still be used if cost is an issue. Plywood (especially if void free) can be used in the main baffle as a sandwich material to better hold fasteners. Plywood is also a good material for making braces inside speaker boxes. Solid wood (lumber) suffers from movement - the swelling and shrinking of wood due to environmental changes such as humidity - and is therefore not a good material for speaker enclosures. Lumber is also not as acoustically dead as MDF.

There are times however, when plywood, particle board and other common sheet goods are more than suitable for enclosures. Such possible uses include sound reinforcement, musical instrument cabinets, and PA systems.

this came from http://www.bscaust.com/THE%20MDF%20FAQ.htm //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

Thanks for that information

 

[TeenWolf 10+ year member]

Interesting story.I met a guy who had a dual 10" enclosure built entirely out of chromed diamond plate sheet metal welded together, it looked awsome but sounded awful, nasty resonance.

That's crazy!!

 

[SPL140.2 5,000+ posts]

No there isnt..Its about 30 mins away..



Thanks for that information

welcome //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

 

[fo0manchu 10+ year member]

This is for all the tech guys and may help with choosing:Below are some typical values for the modulus of elasticity (in million pounds per square inch) and density (in pounds per cubic feet) for MDF, Oak, Pine and Fir Plywood.

Material

MOE

Density

MDF

0.53

48

Oak

1.55

38

Pine

1.3

29

Fir Plywood

1.2

33

The modulus of elasticity (MOE), also called Young's modulus, is the ratio of stress to strain, where stress is the force per unit area placed on the item and strain is the deformation caused by the stress. The MOE is therefore a measure of stiffness.

Q: Can I build speakers with {MDF | particle board | plywood | solid wood}?

A: You can build speakers with whatever you like ! However, MDF is often the material of choice. Its stiffness and density yield good accoustical damping properties. Particle board and plywood are cheaper and can still be used if cost is an issue. Plywood (especially if void free) can be used in the main baffle as a sandwich material to better hold fasteners. Plywood is also a good material for making braces inside speaker boxes. Solid wood (lumber) suffers from movement - the swelling and shrinking of wood due to environmental changes such as humidity - and is therefore not a good material for speaker enclosures. Lumber is also not as acoustically dead as MDF.

There are times however, when plywood, particle board and other common sheet goods are more than suitable for enclosures. Such possible uses include sound reinforcement, musical instrument cabinets, and PA systems.

this came from http://www.bscaust.com/THE%20MDF%20FAQ.htm //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif

AMEN!! Now go get the MDF for the last time and close this thread already! //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif