Step By Step Bass Shaker

[GUS]

WELL. I´m really happy, i¨ve done 2, and WOW!!!!!!!!!
follow the first instructions on the link below. And read what´s next, with some little improvements.

http://www.hometheaterhifi.com/volume_4_2/tactile.html#Testing

as for the lead, I got a car wax can, were I put the lead inside and on the stove,melting in around 10 minutes and giving a round shape.
Depending on the speaker, you would have to make a few tries in order to find the appropiate weight. So, I made: 1 , 1&1/2, 2 , 2&1/2 pound weights.

 

[GUS]

after cutting the cone, on the dust cup, CENTER a bolt or screw, and apply epoxy, DON¨T use less than 4 5 min mixing epoxy.
Apply by thin layers and make sure it is centered.

EVERY THING HERE IN THE PROYECT HAS TO BE CENTERED.

 

[GUS]

cut the steel the right size in order for it to rest at the border of the speaker basket and screw it down with security nuts in order for them not to go loose with vibration.

DONT BEND THE STEEL DONT BEND STEEL.
on the article it says :::: Depending on the driver you use, you may have to attach the steel to the basket arms. If you have to do this, bend the ends of the steel up to comform to the angle of the arms. ::::::::
I tried this, and I lost a lot of vibration
Here is a pic but DONT DO THIS

 

[GUS]

do this

 

[michael]

Very nice, thanks for the tip on not bending the steel. I am planning on building one of these for myself.
What size driver did you use? and what was its xmax?
cheers

 

[GUS]

as you can see in the above pic, there is a nut, (in the center of the dust cap) screwed in the bolt just below the steel, and another one on top.

MAKE SURE by pressing the bolt downwards, and perpendiculary, there is NO friction inside the dust cap (if the coil is movig up and down with friction, will eventually burn)

the steel has to be about 3 or 4 milimmeters above the dust cap, wich you can control by screwing or unscrewing the nuts in the center bolt.

MAKE SURE the steel is completely HORIZONTAL

drill a hole through the center of the of the lead and pale it on top.
screw a security nut, tightly (the bolt will not come appart) make a small force if working with a wrenck, in order for the lead not to come loose and make rattling noise.

Try different weights to see wich one vibrates the most.
To try out the project, find a low bass frequency song, and play it with a low volume, in order for you to detect if coil is not touching and making thal noise(make sure of this or your speaker will burn)

HERE ARE MY TWO SHAKERS, and ïm planning on making 2 more.
Sorry about my english, well it is not my native languaje.

Please read first the link below proyect in order for you to understand, and then apply my idea.
http://www.hometheaterhifi.com/volume_4_2/tactile.html#Testing

ANY QUESTIONS OR IMPROVEMENTS
post here

 

[GUS]

both are 10 inch
no idea about xmax because one is a pioner and speaker is about 10 years old and the other one is a very cheap brand "professional"