Q: In preparing our living room for the new additions, I was moving some 1978 vintage Advent Bookshelf speakers. To show my 5-year-old son what a speaker looked like, I removed the front grill and found that much of the “foam” that surrounded the woofer had disintegrated. Because of its age I assumed that was normal, […]
The perfect refoam kit for your speaker’s measurements might not exist. Often you must adapt an available foam to fit your needs. You can cut and seam a slightly larger foam to fit your smaller speaker requirements or slightly stretch a foam to fit a slightly larger need.
It is more difficult to get adhesives to bond to a polypropolene cone than to a standard paper cone. To deal with this, use a Very LIGHT grade sandpaper and scuff the edge of the cone that will attach to the foam to create a better bonding surface for the adhesives.
EV Recone Instructions Remove speaker parts: Use a utility knife and cut the cone and spider (slicing through the pigtails- also known as lead wire or braided wire) near the speaker frame. Remove recone kit assembly. Immediately cover voice coil gap with masking tape. Use utility knife to clean remaining spider from frame. Remove gaskets. […]
One piece kit Recone Instructions Use a utility knife and cut the cone and spider (slicing through the pigtails- also known as lead wire or braided wire) near the speaker frame. Remove recone kit assembly. Immediately cover voice coil gap with masking tape. Use utility knife to clean remaining spider from frame. Remove gaskets. They […]
Parallel Wiring combines all positive leads together and all negative leads together. This reduces impedance and lowers the amp draw. Two 8 ohm speakers wired in parallel have a 4 ohm load MOL. It is important to know the parameters of the amplifier. Lowering the impedance beyond the recommended range can damage the amplifier.
Series Wiring links your speakers together Positive terminal to Negative terminal and the resistances of all the speakers are added together. Series Wiring INCREASES impedance. The multiplier is the number of speakers and the starting nominal impedance. In other words, two 8 ohm speakers wired in series have an 16 ohm load MOL. Three speakers have a 24 ohm […]
Use voice coil to outline the voice coil opening required on the cone. With a utility blade or exacto knife, cut cone throat to desired size. Smooth and enlarge the opening with the back of thumb nail until voice coil passes smoothly through the opening. If two cones require vc enlargement, use first cone as a template […]
Measure the Cone Depth from the lowest part of the Throat where it attaches to the Voice Coil to the top of the surround height
