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Thanks Wayne: I was WAY off then. I will plug Dan's #'s into the BFD tonight and re-take measurements afterwards. I'll post them back here Monday and maybe we can tweak further if warranted. Later, Jeff S. :) :emoji_thumbsup:

Thanks Dan and Wayne: Could you tell me how to convert "Q" values into the X/60 bandwidth values used by the BFD? My GUESS would be that one "Q" = one octave or 60/60ths bandwidth. Am I way far off in this assumption? The Mackie amp that I'm using to power the Tumult has a continuosly...

The standard Yamaha x-over, 100 Hz...:)

Hey There Wayne: Here's the new measurements I took last night, with the other sub turned off. This time it does not look so flat. The first time I measured it and got a relatively flat response must have been some kind of anomaly as I and others had suspected. It WAS too good to be true. I...

VU-meters?? I'm using a Behringer UltraCurve (DSP-8024) on my subs that has neat LCD bar graphs for each channel for input or output. It also has a red light clip indicator that comes on in that event. Essentially a VU-meter... The BFD I am also using on my two subs also has LED banks of...

Howdy Folks: Could someone please explain to me how I get my sub's numbers INTO Anthony Gomez's spreadsheet? Do I have to import some files from someplace (where?) or can I just enter my frequencies? (Where?) http://www.pvconsultants.com/audio/eq/peq.htm Thanks, Jeff S.

Unless the sub in question was 180 degrees out-of-phase. Notice that a lot of subs (including mine) have only a 180 degree phase control flip switch? All that thing does is switch the polarity. Seems to me that there would be no point to having one of those phase switches on your sub if it did...

PS I also ran the Axial Standing Wave Calculator on my room and it comes up with peaks at 47 and 71 Hz (as well as 28 Hz). 48 Hz is exactly where one of the peaks is centered in my measurements, and 71 Hz is where the second peak starts. I guess that thing works...

I know exactly what you mean. It occurred to me as I was posting that if I tried to EQ the Tumult (LFE) sub while the center sub is simultaneously running, several situations could occur: e.g., IF the Tumult sub was already completely flat going in, I could very well be compensating for peaks...

Howdy folks: Could someone suggest a few BFD filters to apply to these measurements I took (uncorrected) for my sub (see below)? I notice there's a couple of nasty peaks centered around 48 and 80 Hz. Looks to me like they're about 15 dB above the rest of the curve... During testing my...

Vladimir: That was me that posted the following comment from an e-mail Mr. Underwood sent me, to wit: "PS, Don't buy a 5900 as the only difference over the 2900 is on the video side. They sound the same. Walter" Walter Liederman [email protected] Phone-770-667-5633...

Hi Trevor: I would be quite interested to know how it sounds once you fire it up. Did you perchance have a good listen to the stock 2900 so you have an idea of what the "pre-modified sound" is like?? Thanks, Jeff S.:)

Thanks Trevor for summing up the relative sonic merits of these 3 Denon DVD players. I think that for me it will not come down strictly to an issue of which model sounds the best (although sonics IS my main concern), but whether extra money for that $1800-$2200 2900 mod is going to be spent...

I've got a DSP-A1. Have never had that problem except ONCE. It turned out that the banana plugs to my right main Klipschorn's bass bin had come loose, and only at elevated volume the floor would shake enough to vibrate the ends of the wires together briefly and shut off the amp (protection...

THANK YOU VLADIMIR!! You hit the nail square on the head. Trevor, we were not trying to compare fruits (apples and oranges), but DVD players. Thanks again for your astute observations and comments, Vlad my man. Jeff S.;)

Trevor & Levesque: Looks like there's no clear-cut yet as to sonic superiority of the 5900 vs. the 2900. Or at least enough improvement to justify the $1000 cost difference. Going to have to stay tuned on this one for a bit. Seems to me the $1800 some-odd dollars for the 2-channel 2900 mod...

Hey Trevor: I got my question answered: "Don't buy a 5900 as the only difference over the 2900 is on the video side. They sound the same. Walter" Walter Liederman [email protected] Phone-770-667-5633 Fax-802-609-1893 web: underwoodhifi.com

Hi Trevor: You are correct, I am not interested in upgrades for the 2900's video performance, strictly audio. I don't presume that a 5900 would get me up to the same level as the modded 2900, but what I'm asking is would the audio of a 5900 be significantly better than a stock 2900? If not...

I checked out the Underwood mods for the 2900. For the level 1 mod the unit'll run you $1790 and with the superclock ANOTHER $450. That makes the total more than a 5900 ($240 MORE). At that sort of price for the 2900 mod, could someone tell me why one would not just get a 5900 to begin with...

I've got a DSP-A1 and have the front effects on at all times. It makes the soundstage noticeably bigger in front. More "surround", which is what you want for surround sound/DD5.1/DTS...

I've had a Yamaha DSP-A1 for about 4 years. Great integrated 7.1 amp. Front effects channels are always ON. DSP modes are not "fakey" at all, & you can tailor them to lessen or increase reverberations/echos, apparent size of room, liveness, etc. I have those settings at their lowest positions to...

At this point I sure hope so. I've been chasing my tail for nigh about 6 months now try to get this home audio to pro mismatch/debacle/fiasco corrected...:angry: I take it your going to run a sub with all this????:D

Darren: I have your solution... I bought a Behringer RCA to XLR adapter-box-thingy for about 30 bucks at a music store. I don't have the name handy but it's called a D-1 or DD-1 or something like that. It converts RCA non-balanced outputs to balanced XLR outputs (2-channel) and in the...

Brian-K-Owens: "The only thing that has not been mentioned is bass cancellations with bass eminating from so many sources" Hey there Brian: I know there are potential cancellation problems once you have more than one subwoofer in more than one place in the room...that's where I was...

HI Scott: Scott Simonian: "I think if you slapped the LFE on the main channels (along with their bass) you would lose a significant amount of headroom. Those Klipschhorns will be working very hard. IMO, this doesn't sound good at all." Actually, I have thought about that angle, using...

Yeah. What Vince said...

Dave, Scott, & Kyle: One very important thing I forgot to mention in the above description of my planned sub set-up: I'm sending LFE to the K-horns ALSO. Thus with the 50 Hz low-pass FMOD I would not be creating a "gap" between 50 Hz and the 90 Hz Yamaha LFE x-over point, because the K-horns...

Hi Richard: Silly me, of course you would need more power to run the AV-15 than the Tempest. I wasn't considering the "fixed" values. What on earth was I thinking? The AV-15 would be a "step up" but you'd have to step up your power also. Power is cheap these days though. I still say get a...

I've got a better idea. Although this isn't what you asked about, you can get a BFD instead of messing with a driver upgrade & EQ your room resonances. For $120 bucks you should get significantly better performance out of what you've already got...;) Jeff S.

The AV-15 is still a better driver than the Tempest. Acoustic Visions refers to it as a "step up" from the Tempest. If it were not a better driver, it could hardly be referred to as "step up". Correct me if I'm wrong, but that would be a "step down". But don't believe me. Check the specs...