Babelfishing by Mighty AR2

[CanAm Man]

Jacco, ZM, AR2--just an observation. I'm blown away by the depth of knowledge and breadth of info you'all have, here. You guys are great mental stimulation.......!! And that's what keeps us all young, right?

[CanAm Man]

Originally Posted by CanAm Man

I'll post a pic or two, of what a "homemade" carbon composite flat panel can look like......

AR2, ZM.... was going to post a pic of some of our carbon composite flat panels, but actually, those photos were pretty uninteresting.

Here's one of some more complex work-an intake manifold. Flanges are CNC aluminum billet, anodized red. The plenum is twill-weave composite. The plenum isn't finished and polished yet in this pic. Final product will have the epoxy "wet look" to it.

I think I'm now ready to tackle some composite horns....or maybe a large transmission line woofer. The construction is not really the challenge, but the mounting price of composites and epoxies might be...

[Zen Mod]

naah - you don't need to do that for speakers - there are plenty of older materials with some beneficial virtues , which CF certainly doesn't have

OK - it's strong , but I have doubts in any damping properties ....... which you need for any sort of speaker enclosure or wave guide

if you are going for box - use concrete or marble
if you are going for horn/wave guide - go for paper mache or wood

leave CF where it belongs - as intake for sissy volume engines

- regarding knowledge :

AR2 is knowledge-hungry youngster ,
Jaccovitty is old (fart) and vise as Oracle
ZM is dumb and Official Court Jester , as always

[AR2]

Originally Posted by Zen Mod

naah - you don't need to do that for speakers - there are plenty of older materials with some beneficial virtues , which CF certainly doesn't have

OK - it's strong , but I have doubts in any damping properties ....... which you need for any sort of speaker enclosure or wave guide

if you are going for box - use concrete or marble
if you are going for horn/wave guide - go for paper mache or wood

leave CF where it belongs - as intake for sissy volume engines

- regarding knowledge :

AR2 is knowledge-hungry youngster ,
Jaccovitty is old (fart) and vise as Oracle
ZM is dumb and Official Court Jester , as always

Ohoooooo! No one made me as happy as you just did calling me a youngster, absolutely love that. Cheers to that, you just got yourself a free drink when you come over here.

So with all do respect, let me correct you Dr.Zen... Carbon Fibre could be very interesting for speakers enclosures of unusual shapes. Curved boxes, than particularly interesting for open baffle... Carbon Fibre in addition with some less expensive material to gain thickens, could work really well. In addition to a strength and capability to produce nice curved shapes it has absolutely unmatched finish done as CanAm (PanAm) nicely explained in a few posts back. Think about through what pain people go to produce piano finish on the wood. Here, after you are done with construction you are done with the finish as well. Certainly there are disadvantages, such as price, as well as need for the mold, but this could be very interesting and should not be discarded. Quite opposite, should be explored some more in my mind.
Check this out:

Carbon Fiber Applications - Robotics, UAV, Sports Equipment, Musical Instruments

and

Solid Carbon Fiber Sheet Bend Tests

and this

Carbon Fiber Foam Core > Airex 1" Foam Core - 3 Layer


So PanAm go for it, make that CF case! There will be some followers I am sure.

[Zen Mod]

curvature , strength .... OK

but , I can't see enough of necessary damping properties ;

or I'm wrong ?

in any case - it's good enough for squawker and tweeter horns ........ but not for bass enclosures ; at least not as major material ....

youngster , what else - I know your joy in making things .......

[Zen Mod]

anyway - I saw some video tutorial for making woof boxes in cars ;

cut'n'paste wood frame + fiberglass cloth/kit thingie

I can imagine this is even more rewarding , considering quality mixed with enjoyment factor .......

so - go for it .... you can always paste some lossy thing on inside walls

but - funny - it's hard to beat old good plywood ........

[jacco vermeulen]

Close to 25 years ago, the Vise Guy spent some time in an airplane factory, making Kevlar sheeted panels with a honeycomb body.
Around the same time, he made a visit to a ship yard, where they made sonar domes* of...Kevlar.
Nowadays, carbon fiber is the No1 material for building or reinforcing lightweight hulls, tone arm board of me TT is carbon fiber cloth and resin.
But, if you're going for the best result, you'd need (access to) an autoclave oven and go for vacuum.

(*you know, mounted under the butt of a warship)


Currently the largest single vacuum infusion, close to 6-1/2 ton resin injected in 2 hours, carbon&aramid, hull of a 125ft sail yacht =>

[Zen Mod]

anyway - I'll ban ya all for mentioning CF here

it's CF why my fave kidoe - Rossifumi , is having trouble , wearing red .....




Oracle

[jacco vermeulen]

Just wait till i'll have your pointing fingers in my Vise.

[Zen Mod]

now I know why they call ya Vise guy