Brac Posted July 26, 2011 Share Posted July 26, 2011 So, I've been playing with the new tapped horn sub that I built recently. When I run low freq test tones, 17--20Hz give or take, I don't hear any sound from the sub, but it shakes the house. (I have read the adults can hear those freq's). Anyway, I want to see the Freq response of my sub, what do I need to buy/download? Quote Link to comment Share on other sites More sharing options...
Chris A Posted July 26, 2011 Share Posted July 26, 2011 See this site that DrWho (a.k.a., Mike Bentz) put together: http://sites.google.com/site/measuresound/ He mentions this in the following thread: http://forums.klipsch.com/forums/p/92988/941847.aspx#941847 Chris Quote Link to comment Share on other sites More sharing options...
Brac Posted July 26, 2011 Author Share Posted July 26, 2011 OK I down-loaded REW, so I now have the software side, I see I need a mic, but I'm not real clear on what else I need. I want to use my laptop. Quote Link to comment Share on other sites More sharing options...
Chris A Posted July 26, 2011 Share Posted July 26, 2011 You need something to provide phantom power to the microphone and provide a way to plug the microphone into your laptop - like a small mixer (M-Audio, etc.). That mixer plugs into your laptop (via either digital USB port or sound card analog inputs - depending on the mixer you choose). One thing that I've noticed about my laptop's sound card (HP laptop) is that it isn't very good...I'd recommend talking with Bentz (DrWho), Rudy81, or Mallette on what type of sound card to invest in - that's something that I've not fixed in my measurement-rig laptop yet. [:$] If you're only trying to get a rough idea of the output of the sub in-room, then your current laptop's sound card is probably "good enough for now". If you're thinking about doing room EQ with your laptop and REW, then I'd recommend a better laptop sound card later. You'll need something like an RCA-XLR cable to connect the drive output of your mixer to the input of your preamp/AVP/receiver to drive the test signals into your stereo/HT sound system. Chris Quote Link to comment Share on other sites More sharing options...
sunnysal Posted August 3, 2011 Share Posted August 3, 2011 I suppose antoher option is a radio shack SPL meter and a test CD or files downloaded form the internet with frequency tracks. you make notes and chart them...I've done that before. tony Quote Link to comment Share on other sites More sharing options...
CECAA850 Posted August 4, 2011 Share Posted August 4, 2011 I suppose antoher option is a radio shack SPL meter and a test CD or files downloaded form the internet with frequency tracks. you make notes and chart them...I've done that before. tony x2 Quote Link to comment Share on other sites More sharing options...
tragusa3 Posted August 4, 2011 Share Posted August 4, 2011 I've been wrestling with the REW route for many, many months and have yet to get anywhere. Unless you dedicate yourself, I'd just do the above suggestions of plotting graphs with an SPL meter. You can easily and quickly get a graph that way. Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 4, 2011 Share Posted August 4, 2011 I would buy a USB audio interface with phantom power...like the Tascam US-122 or US-144. To this, you would connect a Daytom EMM-6 microphone available at parts express. Quote Link to comment Share on other sites More sharing options...
Marvel Posted August 4, 2011 Share Posted August 4, 2011 I have a US-122, and it is easy to use. We just got a new Yamaha Audiogram 6 that seems pretty nice, but I haven't had a chance to use it yet. Bruce Quote Link to comment Share on other sites More sharing options...
Chris A Posted May 28, 2012 Share Posted May 28, 2012 Bump. Quote Link to comment Share on other sites More sharing options...
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