TwinReverb Posted September 24, 2009 Share Posted September 24, 2009 I've been reading another thread about the Epic series and have been reading about port measurments, 3 inches and 6 inches on the CF-1s. i measured the ports on mine to find the diameter is 4 inches and the depth is 3 inches. the serial numbers are 246494773 and 246494774 which indicates they would be version 1 from '94? but the other thread was talking about version 1s having 6 inch ports, and my port dont measure up to 6 inches in diameter or depth. can anyone give me a little insight on this? Quote Link to comment Share on other sites More sharing options...
Montigue231 Posted September 30, 2009 Share Posted September 30, 2009 if they have 3 inch port tubes they cannot be version 1's made in94...unless somoene swapped tubes..which is unlikely.. I bet they are version 2's.. how does the low end sound to u ? Quote Link to comment Share on other sites More sharing options...
TwinReverb Posted September 30, 2009 Author Share Posted September 30, 2009 sounds like there could be a little more low end. . . how does one determine the year then? Quote Link to comment Share on other sites More sharing options...
Montigue231 Posted October 1, 2009 Share Posted October 1, 2009 ya sounds confusing to me ...the serial numbers u have look like 94...call klipsch parts dept...i beleive they can bring up all the info with the serial numbers..let us know Quote Link to comment Share on other sites More sharing options...
Dale A B Posted October 3, 2009 Share Posted October 3, 2009 My ports are 4" wide and 2 1/2" deep. That would make mine a version 2.5 When I was fiddling around, I found that they are easily removable and now have 1" deep ports. I wonder if saving money on plastic was a factor in reducing the port length on all of the CF models. Productivity savings ! Quote Link to comment Share on other sites More sharing options...
TwinReverb Posted October 5, 2009 Author Share Posted October 5, 2009 "The were definitely built in '94. The serial numbers indicate this - which it sounds like you figured out already. The first three digits of the serial number indicate the day of the year your speakers were built - 264th. This works out to early August (I didn't do the math so forgive me if I'm a little off there). There was a change in these speakers in the fall of 1994. The earlier versions of the CF-1 speakers had the longer port tubes, but that fall we changed them to the shorter tube that you have (we also adjusted the network to correct for this). We would call your speakers "CF-1 rev.2". We continued to build them this way until the summer of 1995" - klipsch support email. i just missed 6 inch ports by a few months Quote Link to comment Share on other sites More sharing options...
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