Caps in ALLEN HC-15 speaker cabinet

[praestant]

Hello, i need help: all caps in the HC-15 speaker cabinets of ALLEN are non polarized capacitors? So i found in this speaker : 1x 30 uF, 2x 680 uf ! (this 2 are in parallel!) ;1x 60 uF, 1x 27 uF, 1x 2,7 uF (uF= Microfarads). All this caps in the rear side of the cabinet are non polarized? Thanks for help! Best regards Chris.

[toodles]

If your question is, are the capacitors in the HC-15 speaker cabinet non-polarized capacitors, the answer is yes. All crossover capacitors will see an alternating current, so they need to be non-polarized types. Either mylar, polyester, polypropylene or other film capacitors, or a non-polarized electolytic capacitor. Capacitors in parallel are used to increase the value beyond what is commonly available, for convenience (to stock fewer values), to achieve a value that is not manufactured, or to "bypass" a high value capacitor to achieve a lower ESR (equivalent series resistance).

[praestant]

Thank you very much, toodles.-- And the 2x 680 uF/ 50 VDC Caps must be are non-polarized too? This 2 caps are direct connected with the + input of the cabinet and take the signal over a big red coil to the LOW output (15´woofer). Thanks, Chris

[praestant]

P.S:. The shematic diagram of the HC-15 speaker cabinet is: 081-4099. I want to know if it really possible, that 2x 680 uF non-polarized (!)Caps in this speaker cabinet? Or is it possible, that only this 680 uF caps are polarized and the other are polarized? Many Thanks for help, Chris.

[John Vanderlee]

This goes beyond Allen.. In speaker cross over applications, the caps are always nonpolarized.

[Innocentti]

Here is the universal schematic for Allen Crossovers. Seems that 2 x 680uF are replaced with 4 x 330uF.

[praestant]

Hello, Innocentti, Thank you very, very much, for your help, and for the shematic digram!!! Best wishes and regard, Chris.

[Innocentti]

The link is courtesy of a previous post by toodles

[toodles]

Yes, the big ones should also be non-polarized. The reason is that the signal from the amplifier is alternating current--it does from positive to negative, so that the + designation is just a reference rather than truly a positive connection, to distinguish it from the other terminal. All applications for use on an alternating current signal require non-polarized capacitors.

Use of polarized capacitors in reverse connection can cause the destruction of the capacitor.

[praestant]

Thank you, toodles, Thank you very much and all here in this Forum for help in my question! Best , Chris.