I just can’t quit... Altecing!

ICTWoody

No longer a junior member
Nice! Good for you getting the Emilar horn shape. I assume mounting on the outside?

Thanks. I will rear mount it. Seems to be designed so it’s just a teeny bit proud of flush when rear mounted on 3/4” wood. Should look really clean.

- Woody
 
Rear mount will be great as it really brings the scale of the horn down as well since you don't see the mounting flange. I was playing around with that aspect when I put together a quick mock-up last year for mine. I might need to borrow your drawing/plan for the bowtie cut-out if you don't mind. I had started it in AutoCAD but never finished it.
 
Thanks. I will rear mount it. Seems to be designed so it’s just a teeny bit proud of flush when rear mounted on 3/4” wood. Should look really clean.

- Woody
Nice. I'm a huge fan of rear mounting.

 

ICTWoody

No longer a junior member
Rear mount will be great as it really brings the scale of the horn down as well since you don't see the mounting flange. I was playing around with that aspect when I put together a quick mock-up last year for mine. I might need to borrow your drawing/plan for the bowtie cut-out if you don't mind. I had started it in AutoCAD but never finished it.

Yeah, man. I prototyped it a couple years ago at a local makerspace using the laser and 3/16" hardboard. The pair of EH800's I had at the time had a little bit of variation in the casting so I worked it out until it fit them both with only a little play. When I got this new pair I pulled out the template and dropped it on them and it fit both really well... so I'm confident it's very close. But you might want to do a quick prototype with my file before you do final. Just let me know

- Woody
 

ICTWoody

No longer a junior member
Bump. See my thread about figuring out a port for these. Then I’ll update next week hopefully.

- Woody
 

ICTWoody

No longer a junior member
Got the new front baffles and back covers from being cut on the CNC. Turned out awesome! The tolerances are very tight. I had a slight recess milled on the back to locate the driver baskets exactly over the cutout and I had them done by Altecs numbers... they’re so tight if I eek the basket in I bet they would hold without fasteners. Friction fit. Next time I’ll add a couple thousandths.

More updates to come.

- Woody

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ICTWoody

No longer a junior member
So I think I have the more or less final design of these things done. Only a couple questions to fill in with my buddy who'll build the stands. I also need to figure out the RAL code for Altec Green for the baffle. These stands will put the middle of the horn at 32" from the floor. The bottom of the speaker is about 10" off the floor. Should be plenty of space for the down-firing port. The stands will be attached to the speakers semi-permanently They will be able to be unscrewed... but fairly solidly mounted. I'm going to add some internal stiffening ribs to the cabinets before they get assembled. I dig the brass accents. Front baffle screws inspired by my Harbeths.

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I also used some Formby's buildup remover to clean the cabs the other night. Then I lightly sanded with 600 grit and some 0000 steel wool and then applied the first of two coats of Osmo Poly-X Oil. They feel so much nicer than they did, but maintained the original look with all the age on them. Pretty pleased with the cleanup so far. I didn't want to remove the nicks and scratches and patina that were there. Wabi Sabi and all that beauty in the decay.

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I'm also trying to decide between the cloth that was on them when I got them, which I saved, or this cloth I have on hand that I've used for a few projects. It's pretty close to the old KLH, Acoustic Research and Dynaco A25 cloth. Definitely fits the period and style.

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- Woody
 
Hard to tell what the condition is of that original cloth from the photo but it really looks good! If it’s in good shape I’d keep it.
I’ve spent a ton of time trying to find vintage(ish) grille cloths and the cane. styles seem to be impossible to find. I must have a 100 samples and very few come close to original stuff from the day in my experience. If you don’t want that original stuff, shoot me a PM.
 

Audionut

Next Round Is On Me
Hard to tell what the condition is of that original cloth from the photo but it really looks good! If it’s in good shape I’d keep it.
I’ve spent a ton of time trying to find vintage(ish) grille cloths and the cane. styles seem to be impossible to find. I must have a 100 samples and very few come close to original stuff from the day in my experience. If you don’t want that original stuff, shoot me a PM.
Have you tried tubes and more? They are local too!
 
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