Round radiating tweeter, aka "Enterprise 1" tweeter!

tubee · 22nd June 2006, 02:32 PM

Hi all.

I want to show here my 2 surround-back speakers. Wanted to keep the costs low, so made for a 20mm CRB-40 neodymium car tweeter a dispersion cone. Woofer is an old bextrene Audax unit.

tubee · 22nd June 2006, 02:38 PM

close up tweeter, sorry for blurryness

tubee · 22nd June 2006, 02:41 PM

Turn in mind picture 180 degrees: Enterprise!

Btw sound is very good for such a cheap tweeter. Removing metal grid before dome was the best modification. Because round radiating highs its like the tweeters can communicate with eachother, very good soundstage in treble. You can walk around the speaker and hear no difference in treble output.

sdclc126 · 22nd June 2006, 03:24 PM

Did you make the dispersion cones yourself? What are they made out of?

Nice work BTW.

tubee · 22nd June 2006, 04:17 PM

Sdcls126: Made the cones from acrylic (PMMA), turned on a lathe, then polished. The foot is regular MDF silver sprayed, the stander is from alumium. Thanks for compliment

tade · 22nd June 2006, 04:28 PM

I am very impressed! Bravo!

Nemophyle · 22nd June 2006, 06:44 PM

the cabinets are extremely beautiful, great work man

Tenson · 22nd June 2006, 07:12 PM

Wow, beautiful!

I wonder why we don't see any omni stand-mounts?

tubee · 22nd June 2006, 07:18 PM

Thanks Nemophile, Tade.

Cabinet is simple: MDF, the roundisch sidewalls are from 2 layers 4 mm fibreboard, soaked in water and bended/ glued/ nailed over pre curved bottom-top plate. Inside is a brace from side to side, and some dampening sheets on all walls. Will glue some strokes of glass in too. Cabinet has rear-firing bass tube.

Veneering i did in a other way as i did usual, not with tixotrope glue(lot of solvents, i get a sore throat of it) but i did this with the "Klang & Ton" way: woodglue on both sides, let dry 20 minutes, then iron it on, in whool preset of iron. Veneer is paper-backed cherry.

Stand mounts i am thinking of allready.

rho · 22nd June 2006, 10:05 PM

Ik ben het helemaal niet eens met je onderschrift.

Anyway....
Nice speakers. Beautiful finish. I'm working with paper back cherry too. Is that just clear lacker or did you finish them with something else? It looks great.

22nd June 2006, 03:24 PM	#4
sdclc126 diyAudio Member Join Date: Jan 2005 Location: San Diego, CA	Did you make the dispersion cones yourself? What are they made out of? Nice work BTW. __________________ Soft Dome

22nd June 2006, 04:17 PM	#5
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	Sdcls126: Made the cones from acrylic (PMMA), turned on a lathe, then polished. The foot is regular MDF silver sprayed, the stander is from alumium. Thanks for compliment __________________ Daisy Bell

22nd June 2006, 07:18 PM	#9
tubee diyAudio Member Join Date: Jul 2004 Location: Netherlands	Thanks Nemophile, Tade. Cabinet is simple: MDF, the roundisch sidewalls are from 2 layers 4 mm fibreboard, soaked in water and bended/ glued/ nailed over pre curved bottom-top plate. Inside is a brace from side to side, and some dampening sheets on all walls. Will glue some strokes of glass in too. Cabinet has rear-firing bass tube. Veneering i did in a other way as i did usual, not with tixotrope glue(lot of solvents, i get a sore throat of it) but i did this with the "Klang & Ton" way: woodglue on both sides, let dry 20 minutes, then iron it on, in whool preset of iron. Veneer is paper-backed cherry. Stand mounts i am thinking of allready. __________________ Daisy Bell

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22nd June 2006, 04:28 PM	#6
tade diyAudio Member Join Date: Feb 2005 Location: Ralieigh nc	I am very impressed! Bravo!

22nd June 2006, 06:44 PM	#7
Nemophyle diyAudio Member Join Date: Sep 2004 Location: paris	the cabinets are extremely beautiful, great work man

22nd June 2006, 07:12 PM	#8
Tenson diyAudio Member Join Date: Feb 2006 Location: Kent	Wow, beautiful! I wonder why we don't see any omni stand-mounts?

22nd June 2006, 10:05 PM	#10
rho diyAudio Member Join Date: Sep 2003 Location: Peer, Belgium	Ik ben het helemaal niet eens met je onderschrift. Anyway.... Nice speakers. Beautiful finish. I'm working with paper back cherry too. Is that just clear lacker or did you finish them with something else? It looks great.

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