A7 Project Thread

[Voice_of_the_Llama]

Second coat on the other cabinet...





And the slats



Started the new horn mounts out of clear vertical grain fir



New decals and grill screen for the port on their way...

Time to relax...

[Voice_of_the_Llama]

Here's the inside of the cabinets for those interested.





And the components



The left 416 (plain green) is from the new speaker. The right one is one I bought on flea bay. Numbers on the baskets read 391845 and 391745 respectively.


I'm going to sell the 806a once I get my other 802c.

[voice of the theater]

Cabs are coming along nicely! Your 416A's look to be in great shape--very similar to the green 16 ohm 416Z's I had in my 846A Valencias -- and about the same age too. Your date codes ("Numbers on the baskets read 391845 and 391745 respectively") indicate the woofers were manufactured in November 1968 and November 1967 respectively...... Looks like you'll be all set once you secure another 802C

[Voice_of_the_Llama]

Drilled the mounts, reused the old "tornado" nuts and primed.



Another pic of the cabs

[Voice_of_the_Llama]

The more I think about it, I'm not sure matte paint is the way to go...

[VolvoHeretic]

Flat grey belongs as a primer coat. I would never paint an A7 that color. My vote goes to gloss black, followed by candy red and then candy blue over appliance white.

Make sure you place a 1/4" spacer between the front baffle and the woofer as has been told to me by people that know to eliminate woofer excursion bottoming out.

[Panomaniac]

I can't see hitting the board for home use. Well, not me anyway. I've done it with a signal generator, but never music. Can't hurt to put in a spacer, I suppose.

[GM]

Make sure you place a 1/4" spacer between the front baffle and the woofer as has been told to me by people that know to eliminate woofer excursion bottoming out.

Hmm, if you hit the baffle with a vintage Altec horn or MI driver, then you're so far past Xmax that you run the risk of the VC bottoming out and/or leaving the gap completely if a spacer is used and eventually it will most likely ruin the VC, requiring a re-cone. Spacers became required when folks got tired of blowing up Altec drivers with too much power and switched to JBL 2035H or similar before Altec came out with their own high power versions that required them for prosound and extreme HIFI apps.

I'll probably have a heart attack if I ever see the 515Bs move that much.

GM

[Elitopus1]

Make sure you place a 1/4" spacer between the front baffle and the woofer as has been told to me by people that know to eliminate woofer excursion bottoming out.

What do you use for a spacer? I could see maybe cutting a ring out of some thick masonite or something