dayton polypropylene cap, polarity?

[zx3chris]

i have a few of these caps

http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=027-428

however they have no markings for + and -, are they electrolytic?? if they are how can i determine the polarity?

 

[zx3chris]

i found this page which explains alot about dif types of caps, and it states polypropylene have no polarity---is this always true??

http://www.interq.or.jp/japan/se-inoue/e_capa.htm

 

[zx3chris]

ttt

 

[JoeBob]

No, they don't have polarity, hook them up either way and it'll work.

 

[jean-paul]

But hook them up the same way in both channels !!!!

You will have different sounding channels if you don't. They don't have polarity but the outer foil ( when marked ) is connected preferably to the lowest impedance point ( mostly the ground side ). That way they are not so susceptible to radiated noise.

 

[zx3chris]

ok thanks alot. i hooked them both up the same way before reading the replies and i tested them on a test speaker and generated tones with my computer sound card---plotted it logarithmically and it worked out perfectly! ... i used copper foil air core inductors and dayton polypropylene caps from parts express and so far so good

thanks

-chris