Home » Audio » Group Build » Smith Horn Group Build - Please Complete Survey
Smith Horn Group Build - Please Complete Survey [message #31966] Fri, 15 September 2006 10:06 Go to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
There seems to be some good interest in a Smith Horn group build project. If you are interested, please complete the survey below to determine the level and type of "prep work" we're looking for.

Throat Size:
- 1"
- 1.5"
- 2"

Pre-fab Components:
- Vanes
- Throat Plate
- Body

Vane Pre-fab:
(What type of joinery are you looking for? A mortise joint will require an increase in the vane to account for the tenons. Dowel joints can use the same vanes as butt-joints)
- Flat butt joint
- Mortise joint

Throat Adaptor:
- Straight bore
- Circular to rectangular transition

Pre-fab Material:
- MDF
- hardwood


Please add any other questions you think I may have missed.

gar.

Re: Smith Horn Group Build - Please Complete Survey [message #31967 is a reply to message #31966] Fri, 15 September 2006 10:09 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
Here's my response:

Throat Size:
- 1"

Pre-fab Components:
- Vanes

Vane Pre-fab:
- Flat butt joint


Throat Adaptor:
N/A

Pre-fab Material:
- hardwood



My survey [message #31968 is a reply to message #31966] Fri, 15 September 2006 10:49 Go to previous messageGo to next message
SteveBrown is currently offline  SteveBrown
Messages: 330
Registered: May 2009
Grand Master
Throat Size:
- 1"

Pre-fab Components:
- Vanes
- Throat Plate


Vane Pre-fab:
- Flat butt joint

Throat Adaptor:
- Straight bore


Pre-fab Material: either




ditto (nt) [message #31969 is a reply to message #31968] Fri, 15 September 2006 11:37 Go to previous messageGo to next message
colinhester is currently offline  colinhester
Messages: 1349
Registered: May 2009
Location: NE Arkansas
Illuminati (3rd Degree)


Re: Smith Horn Group Build - Please Complete Survey [message #31970 is a reply to message #31966] Fri, 15 September 2006 12:33 Go to previous messageGo to next message
Manualblock is currently offline  Manualblock
Messages: 4973
Registered: May 2009
Illuminati (13th Degree)
Here's mine:

1"

Vane
Throat Plate
Body

Mortise/ either one is fine but I like the joint integrity of the mortise and I don't see why it would be a lot more money so why not?

I would like to use one of my Altec drivers so I would assume that means rectangle to circle? If not then eithor one will do.

Hardwood; I guess plywood is out of the question then? Baltic Birch?

Looks good so far.
Thanks for doing this survey Garman.

Re: Smith Horn Group Build - Please Complete Survey [message #31971 is a reply to message #31966] Fri, 15 September 2006 14:33 Go to previous messageGo to next message
PakProtector is currently offline  PakProtector
Messages: 935
Registered: May 2009
Illuminati (2nd Degree)
Hey-Hey!!!,
I am not sure what you mean by 'vanes'.

anyway...

1.375 throat.
Conical section, 19" axial length
8 petals to approximate the cone, 13 mm, 11-ply birch?
35-degree included angle/flare, maybe 40

Mating to two-bolt old RCA compression driver. Throat terminated in the mounting plate, perhaps 1/4" copper? no special throat section.
cheers,
Douglas


Re: Smith Horn Group Build - Please Complete Survey [message #31972 is a reply to message #31971] Fri, 15 September 2006 15:54 Go to previous messageGo to next message
GarMan is currently offline  GarMan
Messages: 960
Registered: May 2009
Illuminati (2nd Degree)
The vanes are the petals inside the horn to create the flare.

Re: Smith Horn Group Build - Please Complete Survey [message #31973 is a reply to message #31972] Fri, 15 September 2006 16:06 Go to previous messageGo to next message
PakProtector is currently offline  PakProtector
Messages: 935
Registered: May 2009
Illuminati (2nd Degree)
Oh, got you...:)

Yes, 8 vanes. Probably 40-degrees included, or at least that is what my notes say. Now to get the good plywood.

The issue I have is that it requires a 22.5 degree miter. With a serious tool shortage, this isn't easy to step around. The back plate/mount is quite easy by comparison...:)
cheers,
Douglas

Re: I'll listen to Steves. Enough unfinished projects. nt [message #31974 is a reply to message #31968] Fri, 15 September 2006 16:57 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)


Sounds good to me! (nt) [message #31975 is a reply to message #31974] Fri, 15 September 2006 18:39 Go to previous messageGo to previous message
SteveBrown is currently offline  SteveBrown
Messages: 330
Registered: May 2009
Grand Master
nt

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