Umc quick setup

[snodog]

What is the slope then? It looks like there is 24 or 12db. I am just tuning the sound best I can by ear. I really think this is the best way after running EmoQ. I dont like too flat of a sound.

[klinemj]

The slope is simply how fast the dB level drops off below the x-over point. So, let's say your x-over for your fronts is set at 40 hz & at 40 hz your speakers are playing at "x" dB level. When you set slope at "12", at 1 octave below 40 hz, the dB level would be "x-12"...at 2 octaves below 40 hz it would be "x-24". If you set the slope at "24", at 1 octave below 40 hz, the dB level would be "x-24"...at 2 octaves below 40 hz it would be "x-48".

So, this won't necessarily affect how "flat" the sound is...it will control the abruptness of the cutoff in what a speaker will be sent from the UMC-1 below the x-over point.

Make sense?

[snodog]

Kind of but why is it since I changed it from 12 to 24 on my fronts the sound sky rocketed, my tv volume was normal but I went to play a cd in two channel and it was really loud only at 11 db

[venaka]

ok ran the emo-q again, pretty much always the same..
l/r front 130hz
c 130 hz
l/r surr 130hz
sub 75 hz
eq put all the 31.5 freq at max gain for all except sub..



FOr me, having max on 31.5 is too much bass.

[snodog]

venaka is the maximum gain on the EQ by moving the bands north or south?

[venaka]

Feb 17, 2010 21:37:08 GMT -5 @snodog said:

venaka is the maximum gain on the EQ by moving the bands north or south?

north @ 10, to me it sounds like poop only when a big explosion happens..but again a simple tweak like dropping it to 2-4 sounds like a dream.
my levels are at 5db, which i also like dropping down to negatives.

[dfdo]

snodog, after running the Emo-Q I adjusted all the speaker x-over points to 60hz. I left the sub x-over point at 70hz. Then I took Emo-Q's EQ curve as the base but moved all EQ adjustments closer to flat. Also I adjusted all the speaker levels to between 0-4db since my room is small.

[snodog]

Well do you know why my volume would have been blasting away at only 11? It was pretty loud like what normally would have been mid to high 20's. I changed to slope to 24 but changed it back and it didnt make a difference. Weird my cable volume from optical is normal but my cd via analog and hdmi is loud as hella

[duckrabbit]

Fellow audio tweakers,

I don't usually make this kind of post, but I just wanted to express appreciation to posters in this thread for some excelllent analysis and explanation. Too often on these forums, there is a confrontational tone rather than an attempt coolly to understand what is going on. This thread feels to me like a welcome exception. I'd especially single out klinemj for helping me to get a perspective on what's going on in the equalization algorythm. Thanks!

Paul (duckrabbit)

[dfdo]

snodog, it was similar for my system after I ran Emo-Q. It adjusted all speaker levels around +9 to +11db. I have brought all the way back to 0 or +2db since the room the HT in is small. I think the front slop should be around 12db. I'm going to further adjust the system with a good old spl meter later on.

forum.blu-ray.com/receivers-amplifiers/38765-calibrating-your-audio-spl-meter.html

[flamingeye]

Feb 18, 2010 0:22:00 GMT -5 @snodog said:

Well do you know why my volume would have been blasting away at only 11? It was pretty loud like what normally would have been mid to high 20's. I changed to slope to 24 but changed it back and it didnt make a difference. Weird my cable volume from optical is normal but my cd via analog and hdmi is loud as hella

Changing slops shouldn`t make any difference in volume on any inputs is it possible that you may have changed the input trims some how that is the only thing I know of that would/can make input volumes different or the same

[snodog]

Yes duckrabbit people are nice on here and like to help.
I want to get an SPL meter and try that but wont you still be forced to manually tweak the EQ?
Flamingeye, I am positive as I checked the input trims. I am just not sure how I could shut off my system and then use it on the same inputs and it is about 10x as loud?

[flamingeye]

Yea that is weird I didn`t think that could be the problem but you never no like my dad use to say check all the possible`s and if you don`t find it then check the impossible

[klinemj]

Thanks for the compliment duckrabbit...it's helping me learn a lot by talking through these isseus, so I am getting a lot in return myself.

snodog...that is really odd. So, let me understand...you are getting radically different volume depending on whether you set the slope at 12 or 24 dB. At 12 it was fine, at 24 the volume seems much louder for a given volume setting on the UMC-1. And, if you switch back to 12, it's fine again, switch back to 24 again and it's really loud (in other words, this repeats over and over as a single-variable change). And, this only affects the CD. Is all that right?

[DYohn]

My suggestion is to use an SPL meter or steel rule or whatever means you prefer to discover the "correct" distances and levels for your speakers. Run Emo-Q. Verify that the distances and levels it sets are close to your estimates, correct them if they are way off, and then set the crossovers correctly if it did not, and then you will have the auto-EQ settings it determined. Save them in one of the EQ memory registers.

This brings me back to one of my UMC-1 improvement wish list items: the ability to run the auto-EQ function separately from the speaker setup function.

[snodog]

Yes but when I switched back it had no further bearing on the volume level, it was the same way too loud. The thing is none of my db are up that high on the EQ either...Im going to turn it on now and see if it has changed since I shut it off last...

[snodog]

Strange as hell, now its at 17.5 which one wouldnt think would be that loud but its at a comfortable listening level. Seems like that used to be about closer to high 20's on my other units.

[klinemj]

very strange...I've got no clue on that one. Let us know if it should happen to repeat.

Thanks!

Mark

[snodog]

Sure thanks Mark, by the way what is a normal listening level to you?

[klinemj]

I vary my system's volume around a lot...for music about the loudest I get is ~85 dB average with occasional peaks up to the low 90's. On on a rare occasion I might crank Metallic or U2 a little more. But, more typically, I listen at ~75-80 dB. For TV listening, I tend to listen even lower. That's all per my handy Radio Shack dB meter...