Tweeter Capacitor Upgrade (Coincident PREs)

Geta2ay from plastics like a Mundorf s ownedtheir Best Silver Gold oil supremes several times . TheJupiter Copper foil 
muc more natural and meaty once you give them 300 hours,
and a Duelund. Silver foil ,oil.01 Bypass cap really opens the top up . Solen is junk,  depending on budget .
go to humblehomemadehifi capacitor test.   A solid A recommendation I usethem myself in my speakers .whileyou are 
at it rebuild the whole Xover austral bloom uses Nothing 
remotelyhigh quality .i owned several  amps speakersall economy 
parts .I modded them  myself , a Huge difference , and for suerewire them , I just used VH Audio New AWG 21 for the tweeter, awg15  forthe other drivers a Litz ssmall diameter 
OCC - 0 crystalCopper verythinned foamed Teflon dielectric  
fantastic wire . He sells a awg 12 and awg 11 forLoudspeaker cables, and use Copper get rid of the junk brass ,on the terminals 
not natural stall I changed every connection throughout to copper
at lesst a 10% improvement . I used the exsctwiring for my amp-preamp, Loudspeakers also. The whole system .time consuming and maybe $1500 in wire but the results are substantial.

Cal3713
for sure change the binding post which are Brass to a Furutecor WBT next gen Gold over Copper ,and put in a Quality Wire the tweeter and mid are connected to. The inductor to create
the Xover ,and you can put in a much better inductor 
to a awg 12  Jantzen inductor far better especially for the Bass
i would think there is another inductor there somewhere as well as resistors, pull out the midrange and woofer you will see other things hiding in there. I have found that to be true case up grade 
the resistors Path Audio, the best if parts connecxion has them in stock, Ohmite Gold, Mundorf Supreme, or Mills 
resistor ohms rating on the resistor. It’s up to you.
best of luck  and use a good soldering station recommend at least 
80 watts and Cardas,WBT, Johnson’s, or Mundorf Silver Gold 
minimum of 5-5% silver solder content Cardas has. Flux built in
which helps a lot  to clear and bond surfaces.

I agree with Erik you only change inductors if you have the correct 
inductance reading or label on the inductor. The Jantzen Copper foil waxed paper inductors are a great buy and close to the best out there .wiring cap, for sure better Gold over Copper Connectors 
vs the stock Gold over Brass ,4x the conductivity ,
And  rewire it with a Quality Wire ,Supra awg 13 ,and 15 
is a Huge upgrade then the Coincident Wire at less then $3 a ft Madisound.

Ihave found the latest Jensen Copper foil paper in oil Copper body to be excellent verydetailed but a bit more saturation very goodwith SS gear .
Jupiter Copper are very good , they are both very good but different