Help to identify Rev. # of Advent OLA crossover

[Devileyes]

Can’t seem to figure out what crossovers I have here for a set of OLA’s. I know there are pre 1970 since they are on a metal plate instead of Masonite. Not sure if the caps are original either. Can anyone identify? Thanks!

 

[RTally]

Check out http://baselaudiolab.com/ADVENT_LA_XO.html for a definitive guide to early Advent crossovers.

Since I see two 16 uF caps, I believe the crossovers are OLA Rev 1.

 

[sparklow]

Your caps are very likely to be original as they are the black with red ends Temple brand. These caps have not proven to be a stable long life cap and they should be replaced.

 

[Guido57]

I'd have to say the caps are original because I can't think of why anyone would use those in a recap, though my OLAs with a metal plate had a different 16uF cap. Those black/red caps showed up in a lot of speakers back in the day. I'm guessing there weren't many options? I wonder when speaker manufacturers stopped using them.

 

[Doug G.]

Yes, Revision 1 with the 3 ohm resistor, from early Advents.

Doug