Below are some useful measurement and analysis tools--with relevant descriptions--that can be found on the web. Acoustics Engineering (Sabin. Skip to content. Facebook Instagram Twitter LinkedIn YouTube Pinterest Spotify Custom. Developers of RPG Room Optimizer software. Options not only tell you which RPG product to use, but it will show you the graph of the resonate frequencies, etc. I'm pretty excited, although one could spend $5,000 on RPG materials in the blink of an eye.

Easy Loudspeaker Placement Correct placement of any loudspeaker, as well as proper acoustic treatment of the listening room, is critical in any listening room. We can't emphasize enough that you'll never enjoy the sound you paid for without careful attention to the environment in which you and your system reside. For a detailed discussion of both the theoretical and practical issues, please visit Richard Hardesty's website and read issue #2 of his -- Hey, Kids, it's free! For a number of years, we experimented with several software applications designed to aid in speaker placement and room treatment. These included the RPG Room Optimizer, CARA, The Listening Room, and Visual Ears.

However, in setting up our latest room, we discovered that a combination of the 'Rule of Fifths' and the yielded the best results. In fact, you can try this at home using only a tape measure, pen, paper, and a calculator. While we can't guaranty that this will work with all loudspeaker systems, the cost is only a few minutes of your time. In applying these principals, the prime objective is to create a inside your room, place the listener in the center of the rectangle at one end and place the loudspeakers in opposite corners at the other end. The Golden Ratio of 1:1.618 is the same formula that was originally used to design the EP-1 cabinet and is very effective in cancelling out the sonic reflections which create aural peaks and valleys.

To begin, measure your room to the nearest 1/4' or centimeter (the example shown below is my personal listening room). Draw a line down the center lengthwise and divide the long side into five equal parts. We like to toe the speakers in slightly (about 10° back from the front plane), so that from the prime listening position, their sides are no longer visible. Keep in mind that while this technique should work in theory, the presence of furniture, windows, doorways, and other features unique to your room, may alter the final locations. Sometimes only an inch or two of repositioning along any given axis is all that's needed to bring everything into balance. Ideally, success will be measured by the degree to which the audio system disappears, leaving you to enjoy the performance without distraction.

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I am going to purchase the DSP-4 from strictly for the XLR outputs from the Meridian 861 stereo subwoofer outputs. The DSP-4 will be for room correction in the subwoofer range only. I am just curious to know of people's experiences with the various products available out there: Smart Live, ETF Acoustics, True Audio, RPG Room Optimizer. Also, If anyone could recommend a specific condensor mic/electret mic as well as a microphone/pre-amp/phantom power setup for room measurment purposes, it would be greatly appreciated.

I have a P4/512 box running Win XP. Along with a SB LIVE, probably a few years old now. Should I grade a different sound card for better accuracy, or get a more recent Sound Blaster card?

I remeber way back when I had a Turtle Beach Systems MULTISOUND CARD on my 386.:-) It was like $995.00 back then. I really need to get some decent room measurment going, any suggestions for a complete setup are appreciated. Thanks, Chris. Hi Chirs, I cannot comment about ETF but I have Smaart Live.

I've been using it with different tool like the Behringer BFD but also a pro digital louspeaker management system (XTA DP224). It is a very complete and quite complex tool with many features targeted to the pro market (direct control of pro tools for example). I used it a Behringer microphone but on the you'll see that they recommend also other microphones. Note that you will not be able to connect the mic directly into the PC, you'll need a additional microphone preamp (I used the Furman mic preamp that was specifically design to be used with Smaart Live). I had good results with smaart live, but today I don't use it anymore as I purchased a TacT RCS 2.2X that does exactly what I needed (integration of 2 subs with 2 monitors and room correction). Conclusion: Smaartlive is a pro tool, very powerful but surely not a cheap solution.