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I suggest reading Paul's posting above that clearly explains the difference between efficiency and sensitivity. He is an actual loudspeaker driver engineer whom is more well versed than a EE in this field. I am a EE myself and have had no training in transducer engineering in school and only...

This article should address many of the questions in this thread: http://www.audioholics.com/tweaks/get-good-bass/multiple-subwoofer-setup-calibration-1 You don't need to co-locate subs to realize the added gain. I also recommend reading chapter 13 of Sound Reproduction by Dr. Floyd...

Hopefully the new Shockwave will be a better shot than the original :) http://www.youtube.com/watch?v=R-ItfWY3xMQ

If you take away the stupid ghetto robot twins in the last movie and the stupid parents, it was enjoyable enough as far as transformers goes. I'd personally like to see more dialogue with the robots other than one-liners. Shockwave will be a cool addition but certainly can't be more villainous...

Heat sinks are pretty generic parts. The same heatsink is likely used on many different brands and model#s of A/V receivers. Marantz and Sherwood receivers are not shared platforms as far as I can see.

I fixed the Dolby volume thing. Thanks guys.

The speakers didn't sound similar. They each scored differently though our scale was a bit too narrow to reflect that. The lossy grille cloth, positional differences of the listeners and lack of experience of some of the listeners played a big role in the variability of the results.

Harman Kardon makes some nice A/V receivers now in the same price range as the Yamaha. You should look into one of those as an alternative.

Actually I suspect most people would hear MORE bass with 22AWG wire compared to 12AWG. The more loop resistance the wire has, the worse the system damping will be. The result will likely be more boomy bass and slightly decreased overall output level if wire resistance negatively affects...

My point is people tend to dumb down results of sighted or blind tests without doing any real statistical analysis to determine the merit of the test or its results. Several reviewers of my staff were convinced all amps sound the same so I in fact did conduct a listening test switching between...

I have a mint condition Da-Lite 105" Cinema Contour fixed frame screen for sale. Its less than 3 years old and the only reason I am selling is to replace it with a bigger screen. This screen retails for $1500 and has been part of the Audioholics Showcase home system since its inception. see...

Yea agreed that article was lengthy even by my standards. When comparing receivers in the same price class assuming they are all using similar amp topologies (discrete a/b) and are roughly the same weight than I think its safe to assume you are splitting hairs audibly and should instead be...

Regarding Double Blind Test Issues I normally don't link to competitor sites but this article was pretty well done discussing the issues in misinterpreting blind test results and how they can lead you to false conclusions that no audible differences were detected...

I disagree. The problem with two-tailed tests where the objective is to prove the null hypothesis (all amps sound the same) is you wind up with a large amount of type 2 errors which can falsely conclude there wasn't an audible difference when in fact there likely was. There can be big...

No they were side by side like I did them. As far as I know, only Harman has the rotating platform for speaker swapping. The Axiom setup was very good and I will be doing a short editorial on it early this coming week.

Its too difficult to do those type of comparison tests in this fashion. Its more practical to bench test the receivers and compare features.

No we have included B&W, and Dali in prior faceoffs.

RE: EMP Woofer Upgrade I'm getting a lot of PM's about the EMP woofer upgrade so I called EMP directly to get the scoop. The new woofers will lower the resonance frequency of the driver to help provide a bit more bottom end but there is a trade off in how punchy or snappy the midbass will be...

I purposely limited the shootout to 4 brands to make it manageable. We don't really have a solid contact at Polk. Definitive Technology's marketing director made it clear he would never send us product for review, especially for a faceoff such as this. Next time we will include all...

Again the grille cloth I used in our faceoff was very lossy b/c it wasn't taut enough. Its fine to use for grille cloth when wrapped on a frame. The way we used it resulted in a -2dB loss of high frequencies which was clearly audible and affected the blind results. I just spent the last 3...