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Power response is typically done anechoic in 10-15deg increments spherically around the speaker. The averaged results are then weighted according to the proportional area of the sphere represented by each measurement. There is a really good article on this I’d love to attach but I haven’t...

I agree. Also just how much sidewall reflection do you really want? It is definitely a balancing act. It's funny. Years ago when I was setting up my theater system in my family room, (long before Toole's book came out), I decided to put absorption on the sidewalls b/c classically that was...

Emotiva takes its time to design quality crossovers that don't display any nasty low impedance dips and they employ good parts and layout. Vance Dickinson does their crossover work and he is considered a legend in the field.

Sidewall reflections are beneficial NOT detrimental. I agree most people stick their couches against the backwall which is bad for smooth bass response and a realistic surround field.

Early reflections dominate in small rooms as per Dr. Floyd Toole's extensive research. Of course a speaker exhibiting a smooth and even power response will also likely produce good early reflections since its off axis response is consistent.

DS-21; I had Floyd Toole look over this thread personally and here is what he had to say: As you can see, you are not properly presenting and interpreting his research. SFM is a tool to help open up more placement flexibility but it doesn't negate proper positioning of the subs in the room...

I installed this EMP sub for a friend in his bedroom system using a pair of EMP e55Ti towers. The combo produced excellent results with plenty of deep and tight bass for music. It's a great deal. Merry XMAS to you!

DS-21; If you have Dr. Floyd Toole's book "Sound Reproduction", I suggest you read Chapter 13. This chapter is very clear about optimal positioning of subs in a room to smooth out bass response. As far as my understanding of ARCOS & SFM, the system will actually measure the room and suggest...

That is very true and hence reaffirms my point about averaging multiple measurements. I do agree that we typically want to correct only low Q bass problems but you still need high resolution data to accurately do this. I make a series of closely spaced measurements and use LMS which can apply...

1. Don't trust Audyssey. Try getting the bass to sound right without it first. 2. Marantz has bass level settings per surround mode (ie. 2CH, 7CH, PLIIX, etc). I found this out the hard way myself. Make sure the sub level is set where you want it for each of those modes. 3. Experiment with...

You like to quote Dr. Floyd Toole's book but did you actually read it? I doubt you did else you wouldn't be making the argument that measuring with 1/3rd octave resolution is "enough". I need not reinvent the wheel when masters like Floyd Toole have already done so. If you really want to know...

Velodyne has always been very vague about this. They claim they purposely smooth the measurements to 1/3rd octave to make it easier for the average consumer to understand. Personally I believe their measurement system is simply limited in resolution to take anything better than 1/3rd octave...

The Audyssey measurement displays from their system is equally if not more useless than the measurement display of the SMS-1. The Audyssey displayed measurements are theoretical so actually they are worse. The reality is consumers like to see smooth graphs. As Colonel Jessup used to say "You...

Wow there is a lot if misinformation in this post but I will try to address the main issues here. 1/3 octave is NOT sufficient for doing any sort of room correction or analysis. The SMS-1 system is more like 1 octave than it is 1/3rd, but lets assume its 1/3rd for the moment. Taking a high...

The SMS-1 has never been an accurate measuring device. It's a crude approximated measurement system which I've noted in our SMS-1 review and my DD15+ review. I've even written about this in an article: Audio Measurements: The Useful vs. the Bogus in Consumer Audio — Reviews and News...

The Paradigm sub2 review will not be completed or published till 2012. Thus it will be a candidate for the 2012 award. I'm quite certain if it wins, some keyboard commando will point out for the same price one could purchase 8 Epik subwoofers though ;)

Axiom does have a history of changing products based on our review criticism. With the on-walls, I found leakage issues at low F and they changed the gasket to fix it. I found many issues with the A1400-8 and they....discontinued it :( They are developing a new center channel with a WTMW...

Cool so they changed the HPF slope of their subs since V1 versions. Kudos to them, especially in taking the time to formally respond in an article format to your queries. Too bad they don't show how the limiter behaves when the sub is driven at higher output levels though :(

Oh boy Tom Nousaine measurements are taken in his living room without factoring out room gain. I hired him to write a review for us and couldn't publish it giving the inaccuracies of his measurements. This is why its important to understand test conditions when trying to compare measurements...

Because it's always people that can't afford the products that always do the complaining. When I get back in the office Doinyz will get a nice banning. Please don't feed the troll .