Wayne Parham Messages: 18787 Registered: January 2001
Illuminati (33rd Degree)
Resistors R1 and R2 should be 16Ω and 25Ω, respectively. The series/parallel arrangement was just done to increase thermal capacity. Using four 10 watt parts we can dissipate 40 watts in each branch safely. See pages 69 and 71 of the Speaker Crossover analysis document to see the power dissipation curve for each of those parts.
The damping material should be cut from a fiberglass sheet that's approximately 2" - 3" thick. I think sheets that are 4" thick would be great too. Just compress them a little bit when you're installing them.
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