Rolf Messages: 3 Registered: November 2015 Location: Kenya
Esquire
Thank you, Wayne.
I will do.
In the meantime I have figured out my mistake when calculating the resonance frequency of the port tube.
One needs to use the entire chamber volume (not dividing this by four, as I earlier did) and the equivalent volume (Vas) equal four times the single Vas.
Then the calculation matches that published by the builders of this speaker.