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Old 29th September 2012, 08:39 AM   #1081
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I tried that after some time and set it to 99dB (meter was at 1....meter) - "Maximum SPL with this calibration is 189 dB". Tried measurement again and got the same dialog box.
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Old 29th September 2012, 08:40 AM   #1082
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Breaking things down to the input side I would go through REW SPL calibration and just use the REW SPL meter to verify the mic input is correctly receiving sound, your voice should register...

I'm tired, your on a Mac right?
You can also see the input in the Mac SysPref>Sound>Input there is a bar graph meter that will show input level for the device.
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Old 29th September 2012, 08:42 AM   #1083
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Quote:
Originally Posted by NEO Dan View Post
Actually it seems odd that you could or would see input on the unconnected channel, the gain for the unconnected channel could be turned down IMO. Is the mono button or monitor button switched on?
My sound card nor digital console have mono/monitor. I believe the "L" input knob was turned down, but I didn't check. Nothing was connected to it.

I feel bad for flooding this thread with my REW problems
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Old 29th September 2012, 08:42 AM   #1084
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Quote:
Originally Posted by CRESCENDO View Post
I tried that after some time and set it to 99dB (meter was at 1....meter) - "Maximum SPL with this calibration is 189 dB". Tried measurement again and got the same dialog box.
this indicates the input sensitvity is set way low, turn it up till you are @ ~130 max. The mic is not good that high anyway.
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Old 29th September 2012, 08:54 AM   #1085
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Quote:
Originally Posted by NEO Dan View Post
Breaking things down to the input side I would go through REW SPL calibration and just use the REW SPL meter to verify the mic input is correctly receiving sound, your voice should register...

I'm tired, your on a Mac right?
You can also see the input in the Mac SysPref>Sound>Input there is a bar graph meter that will show input level for the device.
Yeah, Mac. OK, I'll double check this weekend, hopefully.


Quote:
Originally Posted by NEO Dan View Post
this indicates the input sensitvity is set way low, turn it up till you are @ ~130 max. The mic is not good that high anyway.
Due to the amp set for 2.83v testing. I'll do this in the daytime then. But, I'm sure my neighbors would've loved a 130dB 60Hz sine at midnight
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Old 29th September 2012, 09:02 AM   #1086
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I'm sure this is the problem. You just need to turn the knob up on the mic input, no need for loud noises. 1-2v output is more than enough as you are simply calibrating the REW sensitivity/REW SPL meter to match your handheld.
Once this is set, you are SPL cal'd until the input knob is moved.

I normally don't have chat on in gmail. I sent you an invite, you are welcome to iMessage face time or call, but not tonight I'm about to crash it's 5AM on my end.
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Last edited by NEO Dan; 29th September 2012 at 09:06 AM.
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Old 29th September 2012, 09:11 AM   #1087
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OK, I'll try it again. Thanks, Dan.
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Old 29th September 2012, 12:47 PM   #1088
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Hi Crenscendo,
I am lurking,SO keep on talking REW,I am a nubbie with it and it helps seeing your solutions,
I built a better mic for mine based on wm-61A capsule,Digikey has them and
I used BC560 transistors, I have RTA measurements from 20 to 20K, Try here
Bill Wall's DIRECT APPROACH - Microphones ECM-8000 has the wm-60a in it ,
Have good day,It's raining in Texas,lol
NS
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Old 30th September 2012, 12:06 AM   #1089
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Looks like he turns a measurement mic into a vocal & instrument mic - interesting, but not really what I'm looking for for this purpose.
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Old 30th September 2012, 03:23 AM   #1090
djk is offline djk
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" I have found some used Crest CA-9 and CA-12 amps for enticing prices"

How about $340 with free shipping, brand new.

Beach Audio has some that are 220V only at that price.
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