dkulmacz
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Sorry for spamming multiple forums, but I noticed the "Calibration Equipment" forum had much less activity and I'm hoping for a quick answer if possible . . .
I have been using REW software to measure my room, using a RODE NT1 condenser microphone. Results looked as expected. Last week I bought a Dayton Audio EMM-6 calibrated measurement mic, which I've inserted into the system in lieu of the NT1. After recalibrating my levels and taking new measurements (NOTE: EMM-6 required a lot more gain), I've found the results from the EMM-6 to be completely different from the NT1; particularly, the bass response is about 20 dB lower across the range. The midrange and upper frequencies seem to be roughly in line with the old measurements. I'm no expert on distortion, but it appears that the EMM-6 also has much more distortion, across the range.
As a check, I quickly hooked up my NT1 again, reset the level, and took a quick sweep while simply holding the mic in place. It appears that the NT1 reproduces the original curve, or at least is a lot closer than what I get from the EMM-6.
Is it possible that my new EMM-6 is defective and producing a low, noisy, bass-lite signal and needs to be exchanged? Or is it more likely that my RODE NT1 is producing a bass-heavy signal? Or . . . am I using the EMM-6 wrong? Note that both mics use phantom power, and it was enabled for both.
My plans today are to 1) use the EMM-6 to record some actual audio and listen to the result . . . I'm assuming it should be a relatively normal recording, and should not sound tinny or noisy; 2) re-take data measurements a bit more accurately with both the EMM-6 and the NT1, and then also with a Shure SM57 I have sitting around for comparison; and 3) do a "Real Time Analysis" using stepped sine waves with all the mics, for comparison.
I purchased the EMM-6 last week and if it's defective I need to start the return or exchange process soon, so I'm hoping for any advice anyone here might have. Thanks!!!
I have been using REW software to measure my room, using a RODE NT1 condenser microphone. Results looked as expected. Last week I bought a Dayton Audio EMM-6 calibrated measurement mic, which I've inserted into the system in lieu of the NT1. After recalibrating my levels and taking new measurements (NOTE: EMM-6 required a lot more gain), I've found the results from the EMM-6 to be completely different from the NT1; particularly, the bass response is about 20 dB lower across the range. The midrange and upper frequencies seem to be roughly in line with the old measurements. I'm no expert on distortion, but it appears that the EMM-6 also has much more distortion, across the range.
As a check, I quickly hooked up my NT1 again, reset the level, and took a quick sweep while simply holding the mic in place. It appears that the NT1 reproduces the original curve, or at least is a lot closer than what I get from the EMM-6.
Is it possible that my new EMM-6 is defective and producing a low, noisy, bass-lite signal and needs to be exchanged? Or is it more likely that my RODE NT1 is producing a bass-heavy signal? Or . . . am I using the EMM-6 wrong? Note that both mics use phantom power, and it was enabled for both.
My plans today are to 1) use the EMM-6 to record some actual audio and listen to the result . . . I'm assuming it should be a relatively normal recording, and should not sound tinny or noisy; 2) re-take data measurements a bit more accurately with both the EMM-6 and the NT1, and then also with a Shure SM57 I have sitting around for comparison; and 3) do a "Real Time Analysis" using stepped sine waves with all the mics, for comparison.
I purchased the EMM-6 last week and if it's defective I need to start the return or exchange process soon, so I'm hoping for any advice anyone here might have. Thanks!!!