Sphere Speaker Crossover and Crossover Mounts

I upgraded the components Based on http://www.humblehomemadehifi.com/Cap.html

Audiohobby.eu/en & parts-express.com
Capacitors
C1 – 5.6 uF $20.35 Jantzen Superior Z-Cap
C2 – 8.2 uF $26.76 Jantzen Superior Z-Cap
C3 – 0.11 * 0.1 uF $5.76 Mundorf MCap EVO Oil axial
Run in parallel with a 0.01 uf $5.57 Mundorf MCap EVO Oil axial
C4 – 4.7 uF $16.94 Jantzen Superior Z-Cap

Inductors
L1 – 0.25 mH $2.67 Jantzen Audio 18 AWG Air Core
L2 – 1.5 mH $6.13 Jantzen Audio 18 AWG Air Core

Resistors
R1 – 4.7 Ohms $11.44 MOX Mundorf Supreme 20W
R2 – 8.0 Ohms $4.25 Mills Non-Inductive 8 Ohm 12W