Are my Spendor S6 not S6e woofers original?


I recently bought a pair of used Spendor S6 speakers and the woofers are black. Most Spendors that I have seen have clear
plastic woofers. Can anyone tell me which is the original woofer?
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Three sources of info.

QS&D was the Spendor importer for many years, including the period when the S6 was current. You can email them at QSandD@aol.com.

Bluebird Music is the new US importer for Spendor. You can email them at sales@bluebirdmusic.com

There is also the Spendor interest group on Yahoo. This is a moderated discussion group, so you'd have to apply to join and be accepted. You can start that process at http://groups.yahoo.com/search?query=spendor