the test speaker had exactly this setup exactly as
In the SPK5 spec. But there is ample opportunity for leakage at the junction between the convoluted pipe and the exit flare that I am now investigating.
Hi, yes every aspect of that port needs to be airtight. Am not sure why they made the port tube so complex, but with the angled brace, appears they were trying to direct the airflow in a specific path. A standard bass reflex tuning for this size cabinet requires a almost 18 inch long port. Winding one around allows one to fit a longer tube along a shorter box wall, but the model has a f3 in the upper 60s and a comparable port resonance as a straighter tube has...
It would only have an f3 in the mid-50s, but you could flip the back panel upside down and run with a 2 inch diameter port tube at about 8 inches long. Just curious, how did you fabricate the "tapeworm"?
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