[rm1759]

Thanks, again, Bruce.

So, if I understand you, I am not trying to match the blue line, just get all of the responses below it? I ask, because it seems like the third graph, with both subs in phase the measurement follows pretty close to the target line, although there are several points where it goes above and below. The measurement on just the HSU has the response above the blue line until 30 Hz, at which point the response appears to live significantly below the blue line. It looks to me like the variance is greater on the HSU chart than with both?