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I have simulated 4 ported boxes using different power values (Pe) for a DD 506 D2 redline woofer. My rule for the boxes is to not overpass Xmax at 30 Hz and higher frequencies. On DD's website there are 3 power values for the 500 series woofers, for RMS po

If I want to design a ported or a 6th order bandpass box for a speaker, the Xmax is exceeded. If I design a 6th order bandpass where the Xmax is not exceeded, the box is not buildable (rear chamber is tuned too high and the port have unreal dimensions, or

There are a number of discrepancies between data published by Jaycar between their website and their recent physical catalogues. 1. Incorrect photos There are six woofers available from Jaycar, from 4" to 12", however the photos used on the website do not