Altec on Open Baffles

[GM]

GM There is a french window on the right side...........The imaging and resolution are spot on with the Chesky test disks.

The vents on the dust cap.

I tried as low as 800Hz, but somehow I liked the HF going down to 1 Khz only.

Ah! Cool!

Hmm, the weave looks almost like a crude plastic molding to me, though have yet to see a GPA re-cone. What does it look like to you? I mean all the Altecs I've seen have a fine metal mesh.

Yeah, it's a small horn, so isn't going to go low. I was curious why you're using 288s for wide BW tweeter horns, when a small format 1" driver would be more appropriate.

GM

[rajagopal_j]

Hmm, the weave looks almost like a crude plastic molding to me, though have yet to see a GPA re-cone. What does it look like to you? I mean all the Altecs I've seen have a fine metal mesh.

I am not sure what material it is, it is soft to the touch, bends with very slight pressure and is quite springy could be plastic or cloth, most probably plastic. It is definitely not a mould, it is finely woven but not metal.

Yeah, it's a small horn, so isn't going to go low. I was curious why you're using 288s for wide BW tweeter horns, when a small format 1" driver would be more appropriate.

GM

Probably the images are making it look real small, it is a Le'Cleach Horn with a 600Hz cut off. I am in the process of making one with 450 Hz cut off out of fiber glass, similar to the Azura Horn. That should make a huge difference to the presentation and soundstage. Hoping that it should also help the 288 go down to 800Hz.

I do have a pair of 808-8Bs and 908-8Bs, should plan something with them soon along with either the Klangfilm or Goodmans.

[GM]

OK, then small to me and for a 288, considering its suitable down to 300 Hz on a large enough horn.

GM