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Thor design is a specific transmission line arrangement designed by Josef D'Appolito for a class leading set of Seas Exell drivers. Subjectively it is one of the best loudspeakers out there. I haven't build Thor itself but TLS did a few. He should be able to describe it. You cannot put just any...

Hey, look, disregard my comments and questions. None of them have any reasoning behind it or legitimacy. I am a conspiracy theorist and generally a nut-job. Your preliminary review was exceptionally responsible and very informative. Not answering any of the asked questions and belittling the...

Where? This are the first 3 in mind you PRO speaker review. http://www.audioholics.com/reviews/speakers/floorstanding/emp-tek-e5ti http://www.audioholics.com/reviews/speakers/bookshelf/elemental-designs-a6-6t6-center-channel-speaker...

I think I know where the problem originates. While admins may get offended and unhappy with my previous comments it is basically the same issue. The product is reviewed strictly positive. As we all know there's no ideal loudspeakers as of yet. This brand and model like any others will have it's...

I don't think he needs to or wants to mode. Chose a commercial speaker based on the budget, then pick up a kit based on the same budget, build it and have a laugh.

http://www.diyaudio.com/forums/showthread.php?t=150831 guy takes apart $600 B&W. Interesting. But here's a well known commercial speaker. It's not bad but nothing more sophisticated then dry toast.

The internal volume of the cabinet and positioning of the drivers on the front baffle is extremely important to the sound. So, don't build the box and try a kit that's intended for smaller or bigger one. Zaph's systems have been thought through to the balls pardon my language. There's plenty of...

I usually take CSD of a driver with the crossover attached. CSD of a complete system is hard to take. :)

You may want to look at some of this because $ for $ any of this kits will beat anything new commercially available on the market. They vary in the degree of difficulty. Some have build cabinets and crossovers, some don't but over all it's a great way to the very good level of performance...

can you DIY?

I apologize, didn't mean to offend you at all. I also missed the already existing banner on the top page for EMP. So I guess this are wonderful speakers in it's class they do everything absolutely peachy. I mean, I looked at the SPL but I would attribute +/- 5db in the response to the...

I suggested pink noise because it contains a spectrum of acoustic energy and will give a better chance to SPL matching. If you don't have a pink noise handy a 1000hz would be ok or if you want to be precise, use a few tones. As far as I remember, Rat Shack SPL meter has a deep around 3k and a...

Both. Mic, RLC meters and MLS software are much more sensitive then even the best ear. The purpose is to figure out threshold and what changes affect the perception, how. If you are comparing speaker A to speaker B, you remain the same. Your hearing and all it's fluctuation remain the same...

I am not hell bent on it. It's just an issue and I am offering healthy arguments. If nobody did, we'd be comparing the sound of cables. A 1000hz is where most inexpensive SPL meters are less flaky. Industry uses $600 calibrated SPL meters that most don't have. Also a 1000hz region is...

I don't see how hearing relates to this. Fletcher Munsen tables relate more to the human hearing sensitivity FR/SPL not to speaker vs speaker comparison. Digital MLS will allow you to get near identical data in comparison to anechoic chamber. Most of the companies do not have anechoic chamber...

In short, I believe that impedance matching speaker switch boxes can and should be used for an SPL matching for a multiple speaker listening tests. As you can see it is only one driver/speaker combo so it is only so valid. :)

cschang was also arguing as to how strongly frequency response of a loudspeaker changes with the SPL increase. I've stated that based on my own measurements and experience, FR changes are very minor given the fact that the driver or a loudspeaker is used within it's intended limits. Here's a...

Will the Frequency response of the speaker change? Let's see. Measurements were taken 20cm from the woofer, 0.7m mic/ground. No resistor, 3.5ohm, 8ohm and 15ohm sand cast resistors were used. Crossover was connected at all times.

Here's a first one. Impedance taken with and without an 6 ohm resistor in series with the loudspeaker. The resistor is placed between the amplifier and the speaker. Sand cast 10 watt resistor was used. The impedance remains identical except it's 6ohm higher across the board.

The argument came from this thread: http://forums.audioholics.com/forums/showthread.php?t=57469 I don't want to keep going there so I am starting a new one. If moderators would be so kind as to move the last bunch of “back and forth” from there to here. The argument is as follows. Can...