zuzu Posted June 3, 2007 Share Posted June 3, 2007 I just got a RS SPL meter. Need a test CD now? Quote Link to comment Share on other sites More sharing options...
WMcD Posted June 3, 2007 Share Posted June 3, 2007 http://www.interstudio.co.uk/sndchk.htm I used this one a long time ago. Parsons is part of history of course and this is a little philip. The 1/3rd octave noise tracks are what I used with an RS meter. Then I loaded the data into a spreadsheet with the graph set to bar graphs. Actually I used my trusty HP-200 palmtop, but any old spread sheet has a graph function. If you need help setting up a file for Excel or Quatro Pro with a graph, I'll help you. I don't know if "Works" spread sheet will do this graph. You might have a free copy with your computer if you don't have a standard spreadsheet. In my view, the CD with the RS gives you the very best bang for the buck. Please know that there is only so much you can expect. Noise is random and so the meter will bounce a bit. The slow setting will help. You are getting only 1/3 rd octave resolution. It will not pick out a narrow peak or dip. Others here, particularly Mark (mas) will point out the advantages of computer based programs which will do a an analysis of response in time, etc. I have not used those . . . yet. Such may be the next step for you. There is the added cost, learning curve, calibrated microphone, etc. The extra cost built-in meter was a waste, as far as I can tell -- the RS meter is better. I eventually moved on to the very expensive LMS system. Gil Quote Link to comment Share on other sites More sharing options...
zuzu Posted June 3, 2007 Author Share Posted June 3, 2007 Thanks. Looks like a great CD but $63 for the Cd is a lot for my head right now. Any orther CD's multiple tones not so pricy? Quote Link to comment Share on other sites More sharing options...
gaspr Posted June 3, 2007 Share Posted June 3, 2007 Go to Ethan Winer's site www.realtraps.com Under the" Acoustics Info" section, there is a free downloadable test CD. Quote Link to comment Share on other sites More sharing options...
zuzu Posted June 4, 2007 Author Share Posted June 4, 2007 Thanks to both Gil and Gaspr. The real traps site is great. I'm computer illiterate so I haven't YET been able to create the low frequency test tone CD yet. I do have a CD burner and the file downloaded. Old age isn't for sissys. Still am looking for test CD tones above low frequency. Did move my listening position to 38% from the back wall. I was very close to the back wall before. Sound stage improved plus I treated the first reflections on the side walls at YxX(2)/ X(1)+X(2). Neat no mirrors. Quote Link to comment Share on other sites More sharing options...
Colin Posted June 4, 2007 Share Posted June 4, 2007 Stereophile magazine has three available online, you can tell by their price how good they are... Quote Link to comment Share on other sites More sharing options...
zuzu Posted June 4, 2007 Author Share Posted June 4, 2007 What is the Stereophile link? Thanks. Quote Link to comment Share on other sites More sharing options...
weirdo Posted June 5, 2007 Share Posted June 5, 2007 Don't over-spend. Get one used on Amazon.for less than 10 bucks. I have a Lazertrack 2000 (?) Very comprehensive test CD from a few years ago. . Quote Link to comment Share on other sites More sharing options...
zuzu Posted June 5, 2007 Author Share Posted June 5, 2007 No lazertrack 2000 on there at present. What is the general search category. Thanks Quote Link to comment Share on other sites More sharing options...
JJkizak Posted June 7, 2007 Share Posted June 7, 2007 MCM Electronics has a nice one with everything but the kitchen sink. JJK Quote Link to comment Share on other sites More sharing options...
zuzu Posted June 8, 2007 Author Share Posted June 8, 2007 I ordered stereophiles test cd 2 and 3 from music direct for $9.99 each. Thanks. Quote Link to comment Share on other sites More sharing options...
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