I must be missing something but I don't see it. I was playing with xSim and frd xma files and created this simulation. The parallel bass drivers work precisely as expected but the other two drivers have me stumped. The S2 driver appears exactly as expected but even though S4 is an exact copy of S2 the curve for S4 does not appear nor does it add to the system curve but if I plot S4 (driver only) that appears. I have double and triple checked and as far as I can tell the connections are complete.
What could I possibly be missing?
What could I possibly be missing?
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The ground connection for S2 isn't being made. Move the ground connector away from the rest of the circuit and you'll see a connection gap. Fill that gap and then move the ground connector back so it connects at its end point. It appears you have to make all connections to the ground connector at its end point - you were trying to connect S4 (and the 1.5 mH coil) below the end point. It looked OK, but wasn't really.
PS - Congrats on your lifetime achievement award Bill!
PS - Congrats on your lifetime achievement award Bill!
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That was it. Thank you! Definite slap on the forehead moment. Learning to use these tools. Hornresp seems to do a good job of giving insight into behavior under 200Hz and xSim looks good for higher freq as long as you can get response and impedance plots (still looking for impedance plots for my 075 ring radiators). Next step is to get REW up and running and figure out how to use it.
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