SB Acoustics Satori Monitor - Page 3

tapehead ted · 27th September 2012, 10:01 PM

I really freaked out an experienced CNC operator with a cab that was, well it was a bit more involved than this one actually- compound angles are frequently terrifying even for quite experienced woodworkers, even with CNC machines!

What an awesome shape- I love it.

Joachim Gerhard · 27th September 2012, 10:05 PM

It should be very stable and i find it logical. Thanks that you like it.

Holger Barske · 27th September 2012, 10:11 PM

Given the lengths of the edges, that can't be covered with a plain sheet. You would have to bend it.

Joachim Gerhard · 27th September 2012, 10:51 PM

Yes, a plain single sheet is nearly impossible. Strange, at first i thought it could be done.
Usually ideas like that come to me in the morning when i wake up. Is it so bad that i even design in my dreams ?

Holger Barske · 27th September 2012, 11:01 PM

That's a logical extension to "carpe diem"

Joachim Gerhard · 27th September 2012, 11:41 PM

Some years ago i designed the Sonics Aquilla that has also a slanted baffle that got more narrow to the top. Here the sides are bend so Holger is right.I called that "Butterfly".

tapehead ted · 28th September 2012, 10:18 PM

Is "the Butterfly" a transmission line? Is the taper part of that design approach too?

Joachim Gerhard · 28th September 2012, 11:29 PM

No, it is a bass reflex, tube to the back. I thought that an inwards bend is more stable to inside pressure then the more usual outside bend like popularized by Sonus Faber.
Like a water dam that is bend against the water. The cabinet gets more narrow to the top and is angled by 7°. That gives a measure of delay alignment and reduces diffraction effects.

tapehead ted · 29th September 2012, 12:42 AM

Why doesn't it act as an organ pipe? Or does it (it must, right?) and you're compensating for that somehow? I've been trying to make a tall bass reflex like that and coming to terms with the organ pipe issues, in theory, anyway...

I just now noticed the curved wood. Wow! I'd think they're would be a couple hot spots on either side where the convex surface focuses the sound at some frequency or another.

Joachim Gerhard · 29th September 2012, 07:56 AM

The Aquilla is vertically divided into three damped chamber so the vertical resonance is suppressed. The cabinets have being manufactured by Hornslet in Denmark. They have a patent on bended or curved cabinets. Actually they are not easy to manufacture.

27th September 2012, 10:11 PM	#23
Holger Barske diyAudio Member Join Date: Jan 2001 Location: Ruhrgebiet	Given the lengths of the edges, that can't be covered with a plain sheet. You would have to bend it. __________________ Best regards: Holger www.holgerbarske.com - Deutschsprachiges Paradise-Support-Forum

27th September 2012, 11:01 PM	#25
Holger Barske diyAudio Member Join Date: Jan 2001 Location: Ruhrgebiet	That's a logical extension to "carpe diem" __________________ Best regards: Holger www.holgerbarske.com - Deutschsprachiges Paradise-Support-Forum

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27th September 2012, 10:01 PM	#21
tapehead ted diyAudio Member Join Date: Jun 2012	I really freaked out an experienced CNC operator with a cab that was, well it was a bit more involved than this one actually- compound angles are frequently terrifying even for quite experienced woodworkers, even with CNC machines! What an awesome shape- I love it.

27th September 2012, 10:05 PM	#22
Joachim Gerhard diyAudio Member Join Date: Mar 2009	It should be very stable and i find it logical. Thanks that you like it.

27th September 2012, 10:51 PM	#24
Joachim Gerhard diyAudio Member Join Date: Mar 2009	Yes, a plain single sheet is nearly impossible. Strange, at first i thought it could be done. Usually ideas like that come to me in the morning when i wake up. Is it so bad that i even design in my dreams ?

28th September 2012, 10:18 PM	#27
tapehead ted diyAudio Member Join Date: Jun 2012	Is "the Butterfly" a transmission line? Is the taper part of that design approach too?

28th September 2012, 11:29 PM	#28
Joachim Gerhard diyAudio Member Join Date: Mar 2009	No, it is a bass reflex, tube to the back. I thought that an inwards bend is more stable to inside pressure then the more usual outside bend like popularized by Sonus Faber. Like a water dam that is bend against the water. The cabinet gets more narrow to the top and is angled by 7°. That gives a measure of delay alignment and reduces diffraction effects.

29th September 2012, 12:42 AM	#29
tapehead ted diyAudio Member Join Date: Jun 2012	Why doesn't it act as an organ pipe? Or does it (it must, right?) and you're compensating for that somehow? I've been trying to make a tall bass reflex like that and coming to terms with the organ pipe issues, in theory, anyway... I just now noticed the curved wood. Wow! I'd think they're would be a couple hot spots on either side where the convex surface focuses the sound at some frequency or another.

29th September 2012, 07:56 AM	#30
Joachim Gerhard diyAudio Member Join Date: Mar 2009	The Aquilla is vertically divided into three damped chamber so the vertical resonance is suppressed. The cabinets have being manufactured by Hornslet in Denmark. They have a patent on bended or curved cabinets. Actually they are not easy to manufacture.