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In Reply to: Re: Do You guys read the HR AA? posted by OLe Lund Christensen on November 16, 2002 at 16:14:49:
Hi Ole. I found the B&K catalog. You are using a 1/4 in mike, rather than a 1/2 in mike. My mistake, I understand now. Good response curves in the B&K product data brochure 17-263.
Follow Ups:
One need all three mics, 4133 for low noise on axis curves, 4135 for high accuracy and above 20kHz tests, and 4134 for reverb.Our ears detect a 0.3dB change within a 1/3 octave. That leaves 6 different sounding steps within each of many 1/3 octaves within the normally accepted +-1 dB band. Different sounds galore!
After I have measured and trimmed a loudspeaker system, I allways check with many different pieces of well known music.
If I do not like the balance of the music, I start all over again with measuring and adjusting, until I hit something better sounding...
Makes sense, I now have all 3 curves in front of me in B&K product data 17-253 paper. I have the transient response of all three mikes, measured by Manger, if you are interested.
That I am looking forward to see.
Ole, it would be easiest and faster to FAX it to you. Just give me a fax #. Later, I can try, like you, to post it on this website. There must be a new way that I don't know much about to do this.
011 45 70202267
Ole, did you get my fax? My fax number is (510) 883-0885. I don't know the USA code, but I'm sure that you do. I have the B&K measurements already, but if you have anything else, I would appreciate it.
I am back from travelling, and I got it, thank you.
Very informative.
I am faxing you Poul Ladegaards measurement done with the AMPspeaker loudspeaker as source.
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