Following up almost a year later-- I found the solution! Something was rattling inside the tweeter.
I removed the tweeter from the speaker entirely. There were screws holding on the face place (which the dust cap is attached to), and I carefully removed that. There was a small paper O-ring...
A few months ago I recapped both of my Polk Monitor 5b's with brand new Dayton MPT poly caps, (but not the 2 ohm, 5W resistor on each).
I also replaced the stock SL-2000 tweeters with brand new RD0-194 drop in replacements. They sound fantastic!
A few weeks ago I started noticing slight...
As of 7/31, REW 5.20.9 and Monterey 12.5, this is still not working. Thankfully, isolating output to SR or SL does work, and EQ'ing the sub individually can at least be done by running a full sweep on either L or R channels and disregarding data above the crossover point. Still an odd glitch though.
Apparently it's also perfectly possible to simply buy a 33 uF and solder a 1 uF in parallel. I thought of that initially, but wasn't sure if there would be any deleterious effects resulting from having two caps in parallel. Sounds like that's a viable option then.
Looking at recapping my Polk Monitor 5b's. They require 34 uF caps, but only 33 uF caps are commonly sold.
At 5% tolerance, that could mean they test down to 31.3 uF, or up to 34.7 uF.
Note: I'm dumb and did not edit the title after redoing my calculations.
If worst case, at 2.7 uF too low...
Hi John, I was able to confirm my AVR is correctly decoding Multichannel PCM over HDMI by trying a 6ch, 24 bit, 48 kHz .wav file. Apple's built-in MIDI Setup application also correctly sends an isolated signal to the sub. Neither Apple support nor the folks on the Apple forms could come up with...
Thanks for the reply John. Understood. Dug through the AVR settings and could not find a setting that resolves this. Working with Apple to see if we can determine what is folding the multichannel audio into stereo. Will update the thread with my findings!
Running REW 5.20.4 on a 2021 M1 MacBook Pro, Monterey 12.1
I have confirmed my AVR (Denon AVR-S750H) is receiving multichannel input via HDMI because playing Dolby Digital test files successfully isolates the LFE channel. The AVR display also shows "Multi In".
When running a measurement in REW...
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