Quick update: Curiosity got the better of me so I did a quick experiment - I removed the 'remix' statement. Now the screen report is: ... sox INFO sox: effects chain: input 48000Hz 4 channels sox INFO sox: effects chain: output 48000Hz 4 channels And, I hear four channels that seem appropriately filtered. Currently they don't go to the correct drivers but I can re-route them in ALSA. However, clearly, the bass lines are delayed relative to the mids/highs. Any thoughts on re-synching (as 'remix' seemed to do previously)? TIA, Frank -- View this message in context: http://sox.10957.n7.nabble.com/implementing-loudspeaker-crossovers-using-Sox-LADSPA-plugins-tp5464p5721.html Sent from the SoX mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San Francisco, CA to explore cutting-edge tech and listen to tech luminaries present their vision of the future. This family event has something for everyone, including kids. Get more information and register today. http://sdm.link/attshape _______________________________________________ Sox-users mailing list Sox-users@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/sox-users