Axiom Home Page Forums General Discussion Home Theater Sub level- adjust at sub vs let Denon/Audyssey1909

Thanks,
I checked for updates at the time and was current. There may be more now but it is not a big concern for me. I could definitely use some bass tweaking for sure but am otherwise happy with my sound with just db levels calibrated manually.

The mike was screwed into a tripod, ear height on the center of the couch where I sit. Slightly above the backrest so open on all sides. Pretty much where it needs to be, I think, and the mounting hole on the bottom pretty much dictates correct orientation.

Well Dave, I know it is crazy but the audyssey works on sound waves, it does not mean it is right or wrong. It is about the distance. So your ear or a spl meter might be a better judge, but the audyssey is great for distance for your speakers. Maybe move one of your subs in the room at a time to see if any changes.

I'm not sure he should be doing that. There have been some discussions on AVSforum and diyAudio recently of the Geddes approach to subs, which is (roughly, in my crude paraphrase) to even out bass response using a variety of sub types, placement, and volume-phase adjustments. Essentially, you place the subs and adjust them in whatever way works best.

Been there, done that, did that.

Why should he not do that, it is a proven method that has been around a lot longer, and has a lot more followers than the GedLee approach.

My results following Toole and Welti's approach, as well as Ian, Jakeman, Craigsub, etc. have brought about much flatter response then the GedLee method, and they are much easier to accomplish.

ps: i forgot to mention bass traps and frz's in the equation are a must.

SMS-1 graph with 'NO' eq added after following the methods I described above with my ep600 and twin ep350v3's.

John, Thanks for the reminder. I forgot about that great resource. Matt is great!

Jay, yes the two smaller subs don't really count as real subs. second used Servo 15 for $350 would be nice.

What I've done until now... I leave all on when Audyssey runs.

So the way you suggest. After running Audyssey (I just did with my new back brackets holding the back speakers mid ceiling), I turn off subs 2 & 3. Go into manual test tones to listen to each speaker. I'd use the subs volume knob to adjust the sub to match the SPL of the other speakers with the RS meter. Then repeat with #2 & #3. Is that correct? Then as now, I can still adjust the sub level on the fly with the Denon remote, correct?
Thanks, Dave

Ken, no worries, I won't be going down the REW path.

Coward!

Randy, I should have read on a bit. You and Jay are saying pretty much the same. I did not know you'd 'then' run Audyssey after that. Previously, I have had the two 'lesser' subs adjusted to just below where they distort. Then run Audyssey pos.#1 for the sub check to get it around =/- 3dB, then run Audyssey. I wonder if this has a similar effect, except making sure the two lower end subs don't go into clipping or port chortle(tech term ;o). I actually took apart one KLH and checked all screws for tightness, thinking something was vibrating inside. No change. Turns out the port (though glued in solid, was creating an awefull noise. So I just turned them down a bit in elation to the Servo 15. Pretty much, when in a bass heavy seection, if they'd distort/chortle, I turned down the kn ob until this was eliminated. That is why I have always felt the two KLH's are just sort of filler LFE, not being asked to perform to the SPL that the Servo15 does.

I did not realize others have felt Audyssey sets the sub level too low. Does just manually bumping the sub trim up from the remote on the fly not reproduce bass as well because Aydyssey did not set it there?

Greg & Randy,

I will try the individual sub adjustment that so many recommend. But I wonder if that will ask the two KLH 10" 120watt subs to try to make the same volume as the Paradigm Servo 15. If that is the case they may distort when when heavy LFE demands are made. This case of using subs of such hugely different capacity may cause a problem in having the KLH's t6rying to produce the same peak SPLs as the Paradigm is capable of. I certainly will not tone down the Servo15 to the level the 120w subs can handle.

So would you expect with SPL matching that the cheaper subs may distort, thus causing me to turn there gain knob down anyway. Do you think with the diff, SQ subs I should still match their SPLs to the other speakers?