2 way waveguide speaker build ABEC modelling

[aragorus]

It's the process that matters!
I have also started on a design that I'll share later today.
Glad to hear you are still on board 🤗

 

[fluid]

Looking forward to seeing it, new or interesting ideas have been in short supply lately

 

[fluid]

I have also started on a design that I'll share later today.

Did I miss it somehow?

The old CNC came apart much easer than it went together and I now have a nice assembly table

New base frame is taking shape, non ferrous blades really do cut aluminium nicely

 

[fluid]

The new table top is now completed, this is much better and considerably lighter than the previous try.

Hopefully in the near future I'll be able to do woodworking on a speaker instead of a tool to make a speaker

New spoilboard supports are much stiffer and better braced than before

 

[wesayso]

Serious tools for a serious speaker build!

Hope you get to make some sawdust (or CNC-dust) soon!

 

[nc535]

Its a race, who gets to build vs who gets to listen

 

[fluid]

Its a race, who gets to build vs who gets to listen

I will probably lose both those races

Some functional parts have been 3D printed, drag chain mounts and enclosure handles

I can see why ABS is tricky. Almost at the end of this print something went wrong and a lot of spaghetti was the result.

 

[aragorus]

Looks great!
Good print quality too!

 

[aragorus]

So here's what's been in the oven.
I made a pair of speakers that will be wall mounted in a low ceiling apartment.
And due to the placement they could only be about 25cm high.





I'm not a fan of horizontal speakers, but this was the only option.

 

[fluid]

Nice

Did you not want to try porting the woofers into the horn? Seems like it would have been a good application.

 

[agent.5]

I have been thinking that a pair of Purifi would make a pretty good 2 way multi-entry horn.

 

[fluid]

I'm not sure the Purifi drivers are ideally suited but don't let that stop you from trying

Progress is happening if slowly. I found a nice dust shoe to print for my Makita Router, waiting on a brush strip to arrive to see if it fits the slot as the one it was designed for is impossible to get here.

Printed very fast with a 0.3mm layer so the finish is rough but the parts are strong.

 

[aragorus]

Nice

Did you not want to try porting the woofers into the horn? Seems like it would have been a good application.

I did, but my friend who ordered the speakers wanted good punchy bass...
I feel like the bass from taps isn't as punchy and doesn't extend quite as much-
Unless the taps are very big which would degrade the performance of a small horn like this.

 

[fluid]

Progress is in slow motion, Linear rails have been installed, 3D printed dust collection boom parts visible on the right side

Bearing blocks cleaned and greased, this was a real time drain

 

[frangus]

Hi Fluid,

Nice project you have there. I have been thinking about picking up a CNC kit and 3D printer too, for prototypes and such. Look forward to seeing how you progress.
Where in Australia are you?

 

[kipman725]

So here's what's been in the oven.
I made a pair of speakers that will be wall mounted in a low ceiling apartment.
*Snip*

is the waveguide 3d printed? it looks quite like a QSC/B52.

 

[aragorus]

It's generated with Ath and cnc'd out of valchromat which is some sort of high density fiber board. It's then sealed with beeswax.

 

[fluid]

Where in Australia are you?

Gold Coast

It's generated with Ath and cnc'd out of valchromat which is some sort of high density fiber board. It's then sealed with beeswax.

When I looked before I wondered where the layer lines came from and now it makes sense.

 

[aragorus]

That material is beautifully cnc'd and if the contour spacings are tight enough doesn't need much sanding at all.
It looks pretty nice when sealed with beeswax.
Only thing is the dust from it stains a lot and is probably not very healthy to be arond.
The finish is waaay better than MDF

 

[fluid]

While I have been having some fun with 3D printing I haven't forgotten the CNC. Fairly close to having the mechanical setup completed. Getting the lubricant for the bearings and rails proved to be difficult. Standard amber lithium grease caused the small guides to grind to a halt. Slickoleum which is used in cycling and motocross for fork seals turned out to be the right consistency and viscosity to make the balls roll instead of drag in the races.