Downloads Page

Download Page

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Software

<b>Room EQ Wizard 5.15 (REW) (Released 8 May 2016)
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Room EQ Wizard 5.0 (Released 30 Jan 2011)


Room EQ Wizard 4.11 (Released 3/11/2008)
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For Help with REW
REW Forum
REW Online Help File Index
REW V5 Tips
Room EQ Wizard Information Index - Links | Guides | Technical Articles

For Help with Equipment used with REW
Electronic Processing/Equalization Devices
SPL Meters | Mic's | Calibration | Sound Cards

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Calibration Files
The following generic meter and microphone calibration files have been created at Cross Spectrum Labs. They are all on-axis (facing the sound source - horizontal position) response measurement files.
Cross-Spectrum employs the pressure method to calibrate the low frequency response and the quasi-anechoic free-field on-axis method to calibrate the upper frequency response.

For listening position measurements we recommend that the meter or mic be oriented vertically with a forward angle of about 10 - 20 degrees to capture a good mix of direct and reflected sound for 'room' measurements.

For near-field measurements we recommend a horizontal position to give the most accurate high frequency readings.

We highly recommend the MiniDSP UMIK-1 Microphone, and we also recommend the Behringer ECM8000 microphone or the Dayton EMM-6 Microphone (both with a proper preamp that offers phantom voltage) or the Galaxy CM-140 SPL meter. Radio Shack SPL meters are limited to 3KHz, but can be calibrated by Cross Spectrum Labs. The UMIK-1 will come with a calibration file specific to its serial number... and is USB plug 'n' play, which is why we highly recommend it.

If you want the absolute most accurate measurement for your home theater system, it is best to have your microphone calibrated, or purchase one that includes calibration. Especially do not rely on these generic calibration files as a perfect standard... nor for critical measurements. We make no claims about the accuracy of the files we provide for download other than they are correct for the meter or microphones for which they were created. As a free service we provide these files for anyone to use with their meter or mic knowing that they may not be absolutely accurate with their own meter or mic. For home use, a movement of the mic element a few feet can easily result in several dB of level change, so it is our opinion that it will be fine to use in a home theater in most cases.

Cross Spectrum calibration lab has provided us with a graph of how various Behringer ECM8000 microphones and Dayton EMM-6 can differ in their responses. While many units are within an acceptable variance, some are not.

Variations between ECM8000 microphones

Variations between EMM-6 microphones

We recommend Cross-Spectrum Labs for calibration service. Please see this thread for information. They also sell calibrated microphones.

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Downloadable generic Calibration Files




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Calibrating using the Manual method

If you find that using the REW software is too difficult, then you can use the manual method of measuring and calibrating your subwoofer.

This involves creating a CD with test sinewave tones (supplied below), and using our excel spreadsheets (supplied below) to record the data from a RadioShack meter that produces a graph of your response. Try and keep the result with a 75dB target in mind.

You must use the excel spreadsheet that matches your RadioShack meter type, since the calibration file is different for the various meters. You may have to unblock the excel file before it will run in your computer. To do this, after downloading... right click the filename and select properties... look down at the bottom of the General properties tab and you will see UNBLOCK under the Read only check box. Unblock the file.


Sinewaves - Create your own test tone CD
We highly recommend that you use REW for your room measurements, as it is much more accurate and less time consuming than the manual method.
It does require an investment of time to learn, but it will be worth it in the end. With more improved versions of REW and plug 'n' play microphones... and a great REW Forum... it is getting easier and easier to learn.


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For Help with REW
REW Forum
REW Online Help File Index
REW V5 Tips
Room EQ Wizard Information Index - Links | Guides | Technical Articles

For Help with Equipment used with REW
Electronic Processing/Equalization Devices
SPL Meters | Mic's | Calibration | Sound Cards

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For questions concerning anything on this page, please start a new thread in the appropriate forum. Thanks!