Fat Margaret Loudspeaker Project

[ergo]

I finished preliminary web page on my Fat Margaret Loudspeaker Project...

http://www.hifiklubi.ee/fat_margaret_project/

The design is closed box standmounter using Seas W17E-002 woofer and Seas Millennium tweeter.

Ergo

 

[ksl]

 

[VEC7OR]

Nice

 

[DAVOhorn]

I love the look of the cabinets

what materials or finish did you use?

My current project is only lacking a decent finish.

MDF cabinets , i do not want to veneer.

regards David

 

[indrek]

I like them! This are with very interesting design and Seas speaks on itself!
Nice work!

 

[316a]

Spray on goop

I love the look of the cabinets

what materials or finish did you use?

My current project is only lacking a decent finish.

MDF cabinets , i do not want to veneer.

regards David

Looks like Texcoat / Stonecoat available from Homebase . Can be expensive , even spraying a small pair of cabinets with the stuff but gives a nive finish

316a

 

[ergo]

I used a granite texture spray paint.
http://www.duplicolor.ee/tooted/granit.htm

And no it is not that expensive, at least here in
Estonia. One bottle is approx 10$ and I used 1 bottle per box.....

 

[ergo]

This is how the crossover looks at the moment.

I wanted to make it as easily accessible as possible as I might wanna tweak it.

Ergo

 

[Shaun]

Choosing baffle width

Hi, Ergo

I read how you did your measurements. I have a question: with your rounded box, how did you decide what baffle width to specify in your baffle step simulation?

Regards

 

[ergo]

Lower part of the frontside around the woofer is 18cm wide. So this is the value I used for calculating baffle step.

Ergo

 

[mikee12345]

that textured paint is so cool!

very nice looking ,and nice drivers


i need some of that textured paint !i want to coat my 175l jbl box with it!!

i must find out if ANYONE has it in my city

!!! 🙂 🙂

 

[Brett D.]

Ergo,

Absolutely stunning! Keep up the fantastic work!

 

[octopus]

Hey, I thought I recognised those drivers

Those are lovely speakers. Well worth all those layer cutting eh? 🙂

 

[amo]

Why do you think it cracked in the middle of the MDF?????????

 

[ergo]

The small crack started at woofer hole and ran horisontally in the middle of the mdf panel not the line where the continuous panels are glued....

So the wood glue holds the thing together just fine but mdf itself with it's small fiber structure is not strong enough. I suggest it is wise to use metal rods in such box design even if you first don't see any signs of weaknesses. Someone here on the forum also told that a guy he new built a subwoofer box like this, but then dropped it and it broke like an egg.

Ergo

 

[7V]

Lovely. I particularly like the contour of the baffle edge going from tweeter to woofer.

 

[amo]

The small crack started at woofer hole and ran horisontally in the middle of the mdf panel not the line where the continuous panels are glued....

So the wood glue holds the thing together just fine but mdf itself with it's small fiber structure is not strong enough. I suggest it is wise to use metal rods in such box design even if you first don't see any signs of weaknesses. Someone here on the forum also told that a guy he new built a subwoofer box like this, but then dropped it and it broke like an egg.

Ergo

I wander if it would be wise to encase or cover the whole thing with fiberglass resing before finishing the box. It would be as heavy as a rock though.