re: Klipsch subs vs. SVS and Def. Tech subs

The software is analytical (analyzes, but does not automatically correct like programs such as DIRAC, Audyssey, RoomPerfect, ARC, etc.). It helps with getting the proper placement, level, crossover points, roll-off slopes, and phase angle when setting up any speaker system in a room (not just subs).

It generates a plethora of sounds using your computer, whose output is routed to either an analog or digital input in your audio system. These tones are then picked up by a microphone which is plugged into a USB port on the computer (user must provide the mic), and then will display all the sound characteristics of the room in a multitude of ways (it can be a bit overwhelming for a beginner, but if you spend a little time getting acquainted with it, it can provide you with a wealth of pertinent information).


It is often used to help find dead spots, to help flatten peaks and valleys in the audio band (20Hz—>20,000Hz), and time align (phase) separate speakers (such as subs to mains).


It is a free download... REW—Room Acoustics Wizard. It goes pretty deep if you want it to. There is a 158 page user guide to help. It can be used for 2-channel, 5.1, 7.1, or just for mating subs with the mains.


You will need to purchase a microphone—about $70 or so. The home page explains the ones that can be used. I use the MiniDSP UMIK-1.


Spend some time learning just a few basic things about using this software and how to properly set up a sub...if even just the basics are dialed in properly (phase, crossover, slope, and level), you will experience a smooth and seamless low frequency in music like you never have before.


It takes time and patience—it’s not a 15 minute process, however, if you care to get the best out of your subs, spend the time and you will be rewarded sonically.



I can help those that want to use the program get started with the basics if it seems a bit over their head. Once you get a feel for it, it isn’t too difficult—it just goes really deep for those users who are sound engineers, and it can be intimidating for a noobie.

Glad I could help.

Old school tip on sub placement. Put a sub in your seat. Play deep bass and walk around the walls of the room. When you get great bass response that is the spot you put your first sub. Then place the second sub on your seat. Walk along an adjoining wall to the first sub and when you get your best response place the second sub there on that wall. Old school method to reduce standing waves in the primary listening position.

ETA: Sub placement is about the listening position. It doesn’t matter how good the sub is if you have a hole at the listening position.