Are film capacitors directional?

Hi Bryon,

Yes, the Mundorf's are probably oriented correctly. The two wordings are consistent, although confusing. The lowest impedance in this context is the output impedance of the amplifier. So by orienting the outer foil of the capacitor towards the input of the speaker, which is the same as orienting it towards the output of the amplifier, you are orienting it towards the lowest impedance point.

The reason I say "probably" is that if the values of R2 and R4 are particularly high, conceivably the lowest impedance path to the amplifier's ground could be through the corresponding driver and its interconnected crossover components. What are the values of R2 and R4?

Best,
-- Al

YES- in the photo; you have the Mundorf outer foil leads connected to the x-over's inputs, which is correct(for a series circuit). Reread point three, of the auriCAP advisory, regarding connection in a x-over circuit.

You owe me a Coke, Al. We must have hit, "enter" simultaneously!

Thanks guys.

R2 = 10W 3.3Ω
R4= 5W 3.9Ω

bc

3.3 and 3.9 ohms seem low enough to be unlikely to change the stated conclusions.

Rodman, I'll make it a beer rather than a Coke. Next time you're in Connecticut!

-- Al