Top Hat Speaker Build

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Brass_Machine:
Dale,

Nice work so far... I wish I could help with the G code bit, but I am still relatively new at it.

That is an interesting speaker design. Your nephew is lucky to have an uncle who is willing and able to make things for him.

ibuildstuff4u:
AdeV Thanks, I really like the revision and that is the look we are trying for. I think a large part of my problem is that I don't have my tool programed into Mach so it doesn't know what type of cutting profile Im using on the tip of the tool. This works Ok when I just use one wizard, but when I try to run two wizards back to back they don't blend well at the transition. I should stop and take the time to fully set up Mach but I'm not fully sure if I understand how it all works so it's just easier to not mess with it! :)

I'm going to make a test piece at half the size and see what I can come up with. I will post pictures in a day or two if I get some free time to work on it again.

I just have to make sure to not mess up the real part as the metal is expensive! My nephew was able to get the large pieces of aluminum for free from school, but if I have to buy more it would be $40 per top hat, $80 for the pair. I figure it will be around $100 to $120 for all the aluminum to build both speakers if we didn't get the large pieces for free. I have priced it out because if these turn out nice I plan to make a set for my self!

Dale P.

Brass_Machine:
Hi Dale,

Take your time with the cut... If the transition doesn't look too bad on the test piece, perhaps you could blend it manually? Files/sand paper and such.

Eric

Brass_Machine:
Whats the gap for at the bottom of the tube? The spot that is between the two wood discs?

Eric

AdeV:

--- Quote from: Brass_Machine on October 09, 2013, 06:45:49 PM ---Whats the gap for at the bottom of the tube? The spot that is between the two wood discs?

--- End quote ---

Presumably to let the air move around behind the speaker cone. If you look at the back of one of your Hifi/surround sound speakers, you'll most likely see a similar vent, it means the back of the speaker isn't pressurising/de-pressurising the box all the time, which leads to better clarity. I think the reason it passes through a tall narrow tube is to try to stop the sound from coming out "backwards", not sure if that'd tend to cancel out the sound from the top, or just generally interfere with it.

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