With a multi-meter set to a high ohms setting (20K and above) test for either being "open" or "shorted". A good cap will charge up sometimes slowly depending on cap value and then hold the charge.
Hi Rick
for some unknown reason i am not able to upload img of any size or format uploaded to the site, so URL is pointing to a server containing the images of the 'Prototype Nines'.
Since i have seen and given those panels to David Janszen last week he said they were prototypes hand built by his father.
Hi All
anyone have any info on these KLH's, they don't have the usual set of 10 woofers like the 3 other pairs i have let alone any other KLH Model Nines I've seen in 50 yrs, any info? link to the KLH pictures
www.ishaenterprisesllc.com/