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Multi-Way Conventional loudspeakers with crossovers

Crossover capacitor polarity question
Crossover capacitor polarity question
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Old 12th August 2008, 10:51 AM   #1
rtate is offline rtate  Canada
diyAudio Member
Join Date: Jan 2002
Location: Burlington, Ontario, Canada
Default Crossover capacitor polarity question

I am rebuilding the crossovers on my Dahlquist DQ10's and replaceing the stock caps with "boutique" film caps.
I had always thought that it did not matter which way a film cap was installed but now I'm not so sure?
The caps are marked or identified as to which side is the shield and one cap,(Auricap) has a red and bleck lead on it.The others use the shorter lead as the shield.

What is the proper direction to place these caps in the circuit??
What are the results if they are "backwards"?
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Old 12th August 2008, 11:32 AM   #2
AndrewT is offline AndrewT  Scotland
Join Date: Jul 2004
Location: Scottish Borders
if you change the caps in your speakers and deliberately or accidentally change the capacitor characteristics then you will change the corrections that the manufacturer has engineered into the standard crossover.
It is guaranteed to sound different and this is nothing to do with component tolerances.

It is quite likely to sound worse than standard.
regards Andrew T.
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Old 12th August 2008, 11:52 AM   #3
sreten is offline sreten  United Kingdom
Join Date: Nov 2003
Location: Brighton UK

FWIW the "shield" should connect to the lowest impedance point,
i.e. the amplifier or towards the amplifier. Reverse is likely inaudible.

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