So, after trying several “around the house” boxes with
little success (too big; too small; not enough access) I broke down and walked
to Radio Shack for one of their stock boxes:
Thinking that this
enclosure would allow me to position the input jack flush against one of the
sides - remember, the input jack is on
one edge of the board - it would make the packaging sweet!
Well, once I got
the box home and opened it up, I figured out that this could not happen. The
four lid mounting pillars extended all the way to the bottom of the enclosure,
making sure that board could not be placed flush with one of the short sides. Since the
board standoffs were on its edges, I would have had to remove those, cut the
board down, and figure out another place for mounting that end of the board
(AARGGGHHH!!!).
Since I had no
desire to re-architect the board mounting, I knew my only option was to drill a
really large hole in the side to accommodate the input jack. Bummer.
Anyway, after
playing around with different board mount ideas, I settled on the plan of
mounting the board, the power connector, and the RCA jacks, on the lid of the
box. A quick (yeah right) cardboard template of the inside of the Box plastic
top allowed me to locate the board standoff locations (as close to one end of
the box as possible), and a reasonable layout for the power and output
connectors. Punching and drilling the holes in the plastic to was a bit of a
challenge, without the proper clamps and supports but I got it done. I miss not having a model shop!!!!
Below is the
enclosure plastic top with the board mounted and connectors mounted and wired
up.
This side view gives a better indication of where things are.
And a view of the connectors.
Next was to locate
and drill the GIGANTOR hole in the side of the box. Fortunately, I had one big
drill to make that hole, and even thought it looks a little jack-Leg, functionally,
it works!
The final Preamp,
fully wired up from the Tablet to my old Stereo. Note the input connector (white cable on the left) goes almost all the way into the box (need to fix that in the version that will be put on Amazon and eBay!!!).
I have left the
Preamp plugged in for several days to make sure it is solid and I have turned on my
Stereo periodically to ensure music was still coming through. Next is the acid
test in place in Westchester.
Until soon…….
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