fdd5d689_e_Notes_on_Coupling_Capacitors__Impressions_HV
[Brand] Panasonic ECG ECW-F(B) Metalized Polypropylene, 250V $3.14 [Impressions LV] These are tolerably good. They are a bit on the bright side, lack some bass, and are slightly hard in the midrange. They do, however, pass a fair amount of detail, and in a dull sounding circuit might be a decent choice if one's budget is tight. Not as good as either the Solens or the BCs, but tolerable. [Rating] 2 [Impressions HV] 
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ecp audio diy: Some Notes on Coupling Capacitors
Impressions HV