Recent content by robbnj

FYI: Downloading in Edge puts me into an endless loop of Windows trying to protect itself, me telling Windows REW is safe, Windows again trying to protect itself. And I long ago disabled every form of protection modes I was able to find and control myself (Win 10, final revision). Downloading...

I'll have to look further into this. I was under the impression for many years that AVRs/processors would run discrete channels if they received a discrete input (such as Dolby Digital, etc), and not even allow you to process over that (except for DSP like tone controls or basic EQ, etc). On...

I threw "Dolby Digital" in there as an uninformed way of describing what I thought was supposed to be completely separate channels. Separation such that the only sharing of info across channels was done in the actual recordning, as opposed to ProLogic, where the center and surrounds were derived...

OK. I have always gone in and deleted all but one instance of a device, even when they are the same thing. Your program gives that handy warning if you lose a connection while working in it. Very nice. The speakers are set to large, but processor mode has me wondering. If REW can send out...

This is what I get when I test the left speaker alone, then the L+R, but with the right disconnected, then the disconnected right. So I guess we've ruled out acoustic cancellation by the room, by the other speaker, or by a bad mic connection. That leaves me with computer, or AVR. I'm going to...

I forgot to include a screenshot, but the input and output are listed as EXCL, and are actually the only devices visible in the list. The microphone is a calibrated IMM6 from Dayton, going through a USB mini "soundcard". I have compared the USB unit with others, including a nice Behringer unit...

The mic is a Dayton IMM6 with calibration file enabled, connected via USB mini soundcard. I have tested several of these types of USB input devices, and they all measure similarly flat when measured by loop-through, and give virtually identical results when doing live testing. I also tested a...

Are you saying that to test each speaker, I have to go to the soundcard page and select it there, not just by selecting it at the measurement window, like I do in my video? I will have to give that a try. I thought that just selecting a channel on the measurement page sent a signal to that...

OK, so I redid the tests, and took video of the process. As you'll see in the video, I do left main, right main, then the mains together. "NO SUBS" in the sweep name means this is the main speakers only; my powered subs are physically disconnected from the system. I then run and swap the wires...

I'm not really sure what this all means in reference to this weird issue of disappearing bass, but each amp will do 500W at 4 ohms (the nominal impedance of the Carvers), and more as the impedance drops. I'm running a mono amp for each channel, and they are putting out the same power each...

I suppose I could take video of me taking the individual measurements, the combined measurements, switching the cable on the one woofer module, then measuring again, just so you are confident that I am doing it right. I just finished doing a 3 sub setup from gain matching, cross correlation...

No, these are the ALSIII with the 48" ribbon driver for the top end. The ICEPower modules are the 250W units. Each one has its own power supply, and they are rated 250W @ 8ohms, 500W at 4ohms. The Carvers are rated at 4Ohms, but I heard they can dip a fair bit lower. The amps dive them louder...

I labeled them P1 through P3 to represent the differing locations of the mic around the MLP. I was wanting to make sure I wasn't just catching some freaky room mode at the MLP that was crushing the bass. I see where you are going with your conclusion, but the speakers were each measured as a...

First time sharing a file. Hope this works!

Hi all. Doing some fiddling with my main speakers today. and wanted to get a set of sweeps to save and tinker with. I did a measurement of each main speaker independently, then a measurement of them both playing. I noticed that the bas dropped off quite a bit when I measured both at the same...