Progress update after days 3,4& 5 (not complete days. Few hours here & there.) Been busy with life - rehearsals, organising gear etc.
S12 Build
Days 3,4 & 5 (Condensed progress report)
1. Materials
Parts from previous days.
PU Glue
2. Tools
Saw horses (pair)
Cutting frame
Circular saw
Hand plane
Hand drill /bits
Router / bits
Brad nailer – 18g 25mm brads
Clamps
Square, pencil, knife etc.
3. Objectives
• Cut back to size, make & fit braces etc.
• Cut port pieces (shape edges with 45º chamfer bit),
• Order parts:
◦ La Voce driver
◦ recessed jack plate
◦ 2 off Neutrik Speakon 4-pole sockets
◦ Speaker grille
◦ Feet
◦ Strap handle
◦ Cab paint
4. Method
• Cut back, port pieces & braces to size with saw. Routed 45º chamfer on port pieces.
• Planed square edges with a hand plane (easier, quicker & quieter with hand plane than the router).
• Cut baffle to nominal size: trimmed & planed to a slack fit to allow for glue-up.
Obtained parts: driver, jack plate (Blue Aran, UK) handle & feet, Speakon connectors (Penn Elcom, UK). Bolts / nuts (M5, M6) for feet; machine screws / nuts for Speakon connectors (M3) obtained locally.
• Routed baffle aperture:
◦ Drilled a 6mm hole (in the 6mm thick temporary router “table” at the radius distance from the appropriate edge of a 6mm straight router bit.
◦ Drilled a 6mm hole in the centre of the baffle aperture
◦ Fastened baffle to a piece of scrap backing 12mm ply using double sided tape: making sure centre waste portion & baffle will remain glued to the backing piece when cut.
◦ Drilled attached backing through baffle centre hole with same 6mm bit.
◦ Removed bit & inserted it in the hole in the router table.
◦ Adjuster router plunge/depth to give enough travel to cut through baffle, but not the backing.
◦ Placed baffle / backing sandwich on drill-bit pivot & cut the baffle aperture.
• Glued / pinned all parts (baffle / port pieces / braces) in place. Used brad nailer with spacing scrap to facilitate easy(ish) removal of nails near radius corner edges.
• Removed nails after 24 hours
• Sanded cabinet & rounded corners
• Installed & wired driver, jack plate, feet, handle
• Tested cab. per instructions – no leaks. Been too busy to run it with 30Hz tone.
Needed to sort amplifier(s).
• Ordered grille (
www.speakergrills.co.uk ) and cover (
https://www.hotcovers.co.uk/) Tuff Cab speaker paint (Blue Aran, UK)
5. Results
• Cabinet functionally complete
• Took it to band rehearsal – excellent – clearer, louder for same input with more extension than existing commercial sealed 1x12 (as expected / anticipated.
6. Lessons learned
• Use off-cut from routing speaker aperture as a protector when fastening speaker.
• Clamp port pieces firmly to prevent any movement when nailing.
7. Next
• Remove driver, handle, jack plate, feet.
• Paint baffle & port interiors matte black spray paint (Amazon)
• Paint cabinet with TuffCab paint & rollers
• Allow to dry & refit parts
• Print & fit BF logo on baffle (so it is protected)
• Obtain / make stand-off mounts for baffle
• Mount / fit baffle
Pics:
Baffle routed
The attachment Simplexx112_bulid_Day3-4-5_02.JPG is no longer available
Jack plate in back
Baffle, internals/braces (not in order of construction)
Showing as much of wadding as possible
Cabinet front
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