aion Lab L4 BASS PREAMP Manual - Page 18

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ENCLOSURE LAYOUT

Enclosure is shown without jacks. See next page for jack layout and wiring.

L4 PREAMP

1590XX

Note: The upper pads for the dual-gang

gain potentiometer appear to be cut

in half. This is intentional! It's called a

plated half-hole or castellated via, and it's

used so that the PCB can lay flat across

the pots instead of angling upward for

the dual pot.

Solder it like you would if they were

normal pads, but bend the upper set

of pins forward slightly so they make

contact with the inside of the pads.