Z19 external crossover upgrade for Altec Model 19

Now that the D3A phono build is up and running (albeit, it is still a WIP), I have now emabarked on the next project - the Z19 crossover project based on the Zilch (RIP)'s design from Audiokarma fame . I have all the materials for the build :

1) Two 12"x8" Hammond Chassis

2) Crossover components from Soniccraft ; Below is my order

3) 2x 8 ohm LPAD
4) Terminal blocks, PCB Laminate, Speaker binding posts, Neutrik 4P male/female XLRs, 18GA hookup silver coated copper teflon coated wire




I based my layout on this design, courtesy AK member billyunderhi :





Here is the mockup :








I traced the components on a graph paper, so I can replicate the layout accurately on the other build Next Steps :

• bore holes on PCB laminate
• mount components on PCB and tie wrap
• bore holes on chassis for speaker binding posts and speakon
• bore holes for LPADs
• bore holes for terminal blocks

Z19 schematic for reference :