AST0801 Foldback wedge
now the two Side plates are finished we can now assemble the rest of the wedge.The rear baffles (for want of a better name) fit around the Sub plates as shown below again you may want to put off gluing the parts together until you have ensured they all fit together neatly.
note you will need to cut a couple of pieces of wood from the angled lengths O and P for mounting the front Baffle.
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When you have finished the front rim of the wedge place the wedge face down on the stand and start painting all the edges and around the handle etc. As before paint these well - when you have finished protecting all the corners and edges use the remaining resin to paint the rest of the wedge.
Timing for the paint may vary according to the Resin you use but is usually half the cure time for the resin (check the instructions for your Epoxy Resin). I used Dulux enamel to provide the top coats and this has (so far) turned out to be reasonably durable Rockard is another paint worth using. Build up the paint good and thick to get a smooth finish - if you have access to a spray gun that would be good. Note be careful not to get any paint in the thread of the T nuts for the stand mount. Line the inside of the wedge with foam and mount the crossover - Note that this is a tight fit and the board needs to be mounted with the Relay towards the front (as per the pictures below) for it to clear the speaker. Solder wires to one of the Speakon connectors making sure that the wires to the other connector are long enough to reach through the mounting hole on the other side of the wedge. Mount the connector using self tapping countersunk screws, pull the wires through the opposite hole and solder them to the other connector. Mount and screw in the other connector and connect to the crossover. Line up the front baffle and the front spacer and screw them together - check that these fit the front of the wedge and plane the edges back if they are too big.
Note that I have since found that the grill will loosen over time causing rattles, so it is a good idea to use a piece of felt or foam rubber (not shown in the pictures above) behind the grill to dampen this out. Connect up and mount the speaker - Remember that the tweeter is connected out of phase according to the markings on the crossover (i.e. + (red) on the tweeter to - on the crossover and - (black) on the tweeter to + on the crossover). Stick Velcro strips around each edge of the mesh and use this to hold the Speaker foam (usually sold as Air conditioning Filter foam). the wedge is now complete and ready for use. Copyright © 2009 Australian Technical Production Services |
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