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Well, THAT's Not Gonna Fucking Work!
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<blockquote data-quote="Rich Frembes" data-source="post: 39806" data-attributes="member: 432"><p>Re: Well, THAT's Not Gonna Fucking Work!</p><p></p><p>I do not have a DriveRack PA+ on hand but I do have a 260, so I ran it through a few paces this afternoon. Bennett - I cannot replicate the polarity reversal you encountered, but the 260's phase response behavior may shed some light on the PA+ measurements. My measurement setup is Smaart 7 with a Roland OctaCapture set to a 96 kHz sample rate. It is a balanced measurement system, so it takes one question out of the equation.</p><p></p><p>Take a look at this screen shot:</p><p></p><p>[ATTACH]149980[/ATTACH]</p><p></p><p></p><p>The curve with the relatively flat phase response is the OctaCapture with a hard-wired loop back. It measures roughly 8 degrees at 20 Hz. The other curves are the dbx 260 with its high and low pass filters set to "Out", but I have changed the high slope and low slope topologies in each measurement, e.g. Butterworth 12 or Linkwitz-Riley 24. For simplicity's sake I changed the high and low slope topologies in lockstep.</p><p></p><p>It appears "Out" is not necessarily so.</p></blockquote><p></p>
[QUOTE="Rich Frembes, post: 39806, member: 432"] Re: Well, THAT's Not Gonna Fucking Work! I do not have a DriveRack PA+ on hand but I do have a 260, so I ran it through a few paces this afternoon. Bennett - I cannot replicate the polarity reversal you encountered, but the 260's phase response behavior may shed some light on the PA+ measurements. My measurement setup is Smaart 7 with a Roland OctaCapture set to a 96 kHz sample rate. It is a balanced measurement system, so it takes one question out of the equation. Take a look at this screen shot: [ATTACH=CONFIG]149980.vB5-legacyid=2248[/ATTACH] The curve with the relatively flat phase response is the OctaCapture with a hard-wired loop back. It measures roughly 8 degrees at 20 Hz. The other curves are the dbx 260 with its high and low pass filters set to "Out", but I have changed the high slope and low slope topologies in each measurement, e.g. Butterworth 12 or Linkwitz-Riley 24. For simplicity's sake I changed the high and low slope topologies in lockstep. It appears "Out" is not necessarily so. [/QUOTE]
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