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I have a Classe DR 150 power amp (1991 vintage designed by Dave Riech (my spelling may be off here) the founder of Classe) feeding a pair of B&W 802's (stereo) in a room I use for critical listening. The build quality of the Classe is excellent. I have been extremely happy with the sound and the...

I went looking for the analog meter at Radio Shack about a year ago and found it was discontinued in Canada The only hope you have is to find some old stock. Since I live in Vancouver I drove down to Bellingham USA and bought one there. You might try mail order through the Radio Shack USA...

The reason to use AVIA or Video Essentials and not Stryke to set up your levels is the first two have calibrated signals. Stryke does not publish (to the best of my knowledge) what level his signals are recorded at on the disc. Here is the logic behind the calibration levels: THX specifies...

Sonnie:

Brucek: When I get to EQing my room, I will post my results and thoughts. I have also read with great interest the subject of house curves (pro's and con's). I have also examined the Fletcher Munson curves. This should be fun to play with. It would seem that for a pleasing sound that the...

Brucek: I just check the RANE web site and their parametric and graphic EQ's have gain controls with up to 6 db of overall gain in the output stage. These would certianly take care of the issue of not enough drive for a Sub amp. Doug

BruceK: yea me to... I have a MSEE, so like you, I am very comfortable with the electronics, but I have never really pursued audio to the extent that I do now. What I find really cool is with digital audio (specifically home theater) there are guidelines (like THX, Test Disc's etc) that...

Brucek: Again thanks for the reply....(btw how do you get the Quotes indented?) It sounds like we are in violent agreement.;) Your Quote: "I can't imagine you're implying to wholesale raise and EQ flat a 3 to 5dB increase for the entire range of frequencies that pass through an EQ. Consider...

Check out this.... Spend some time, it explains how the reference is determined. Link Removed Doug

In my travels though the Internet I have only been able to identify a single traceable path to calibrated testing equipment for the purposes of producing calibration values for the analog Radio Shack meter. I suspect that everyone is using and referencing the same work. Since I have not...

Brucek: Thanks for the response. Below are my comments... Your Quote: "But with most EQ's, they are a unity gain device and so the maximum voltage range is determined by the processor sub out line amplifier. It has a limit and therefore so is your required compensation after a large EQ...

I have read with great interest the discussions on the board about amplifier headroom and whether, when using an EQ for a Sub, to cut frequency responses to a desired curve or to boost holes in the response. The arguments presented to date center around amplifier headroom. I have done some...

Michael: You should get a copy of the magazine article referenced above to appreciate the complexity of this topic. Basically, there are excitation modes (1st order, 2nd order, etc vibrations) that are set up in speaker cabinet walls. The purpose of the article was to identify these modes...

I read the artical last night. It is long and detailed. The take aways that I got are as follows.... The thicker wood is better - i.e. multi layers of MDF Isolating the woofer from the front baffle is good. - using either rubber (or similar elastomer) between the speaker and baffle...

WRT to using MDF or hardwood, here is what I have found. I built bookshelf speakers using 3/4" Cherry and 3/4" MDF. The cherry units where made for the L, Centre, R and Surrounds. The MDF ones where to be mounted between ceiling joists for the rear channels and no one would see them, thus...

I am in the process of finishing a Stryke 5.2. I currently have 2 - 10 AVI sub's in the HT room but they have an F3 at 42 Hz and I want to go lower...therefore the Stryke. Even with 2 subs, my in room response has a huge peak at 50Hz similar to Jon M. For those of you who have equalized out...