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Official Power Sound Audio Thread - Page 267

post #7981 of 9890
So is this good?

I started playing "getaway" which has a ton of lfe. At -10db with my wife upstairs trying to go to sleep. She came down and said I had to turn it down. The bed was shaking so much she couldn't even lie in it hahah.

Is say I'm good with subs haha
post #7982 of 9890
Quote:
Originally Posted by D Bone View Post

Over time, 621db is going to damage you hearing

Haha, too bad it was upside down, if not I wouldn't of made it through that one eek.gif
post #7983 of 9890
Just got a new umm-6 mic and installed rew. The umm-6 no longer requires manual calibration with an spl meter. Rew now auto recognizes it and asks for the cal file. It actually gives me a message if I click on calibrate in the spl meter tab. It won't let me manually calibrate it. They must have recently updated it to be auto recognized just like the umik-1 mic. The first line in the calibration file has sensitivity information.
post #7984 of 9890
Quote:
Originally Posted by FLViking2011 View Post

Just got a new umm-6 mic and installed rew. The umm-6 no longer requires manual calibration with an spl meter. Rew now auto recognizes it and asks for the cal file. It actually gives me a message if I click on calibrate in the spl meter tab. It won't let me manually calibrate it. They must have recently updated it to be auto recognized just like the umik-1 mic. The first line in the calibration file has sensitivity information.

cool, cant wait to see your charts smile.gif
post #7985 of 9890
I'm a little bit confused. So the calibrated USB mic can only be used to calibrate a subwoofer only? Or can it do both speakers and subs?
post #7986 of 9890
Quote:
Originally Posted by GusGus748s View Post

I'm a little bit confused. So the calibrated USB mic can only be used to calibrate a subwoofer only? Or can it do both speakers and subs?

It can do any speakers just like normal with REW smile.gif
post #7987 of 9890
Quote:
Originally Posted by Blackmambakila View Post

It can do any speakers just like normal with REW smile.gif

Sounds good. That means I don't have to buy a SPL meter. I bought one of the calibrated mics too.
post #7988 of 9890
Quote:
Originally Posted by Blackmambakila View Post

cool, cant wait to see your charts smile.gif

First chart XV-15 - three seats on the couch seat #1 is closest to the front door... Followed by seat #2 and #3 - audyssey off



Same seats #1-3 audyssey on



I thought I was missing mid-bass slam and now I see why!! Below are pictures of my set-up and seating area - placement areas are a bit limited due to the size of the room 14x17.







Not sure if there is anything I can do to help with the dip between 50-70hz and the difference between seating positions other than getting an additional xv-15 and a receiver with xt32. I currently have a denon avr 591 with basic audyssey. Let me know what you guys think!!

Thanks.
post #7989 of 9890
Quote:
Originally Posted by GusGus748s View Post

Sounds good. That means I don't have to buy a SPL meter. I bought one of the calibrated mics too.

With a SPL meter its nice to run the REW level test tones before you start and you can use the SPL meter to get the volume to the db level you want to test at. For example, when i run the test level I use my SPL meter to match a certain volume such as 80dbs. After that I put it away and use the mic to make my charts. This way when I see my charts I can see how flat my room is and also how much room gain im getting and where. If i set it to 80dbs and part of my graph at 40hz shows 65dbs, then im losing output there. If at 60hz im reading 95dbs then im getting an additional 15dbs gain at that frequency.
post #7990 of 9890
Quote:
Originally Posted by Blackmambakila View Post

With a SPL meter its nice to run the REW level test tones before you start and you can use the SPL meter to get the volume to the db level you want to test at. For example, when i run the test level I use my SPL meter to match a certain volume such as 80dbs. After that I put it away and use the mic to make my charts. This way when I see my charts I can see how flat my room is and also how much room gain im getting and where. If i set it to 80dbs and part of my graph at 40hz shows 65dbs, then im losing output there. If at 60hz im reading 95dbs then im getting an additional 15dbs gain at that frequency.

I understand what you are saying. Thanks for the explanation.
post #7991 of 9890
Quote:
Originally Posted by FLViking2011 View Post

First chart XV-15 - three seats on the couch seat #1 is closest to the front door... Followed by seat #2 and #3 - audyssey off



Same seats #1-3 audyssey on



I thought I was missing mid-bass slam and now I see why!! Below are pictures of my set-up and seating area - placement areas are a bit limited due to the size of the room 14x17.







Not sure if there is anything I can do to help with the dip between 50-70hz and the difference between seating positions other than getting an additional xv-15 and a receiver with xt32. I currently have a denon avr 591 with basic audyssey. Let me know what you guys think!!

Thanks.

Keep everything going. Just start moving your sub around and measure it with audy off. Compare your graphs and see what spot that dip begins to disapear. Even if its not somewhere youd keep it just try all around this way you can atleast see whats causing the dip.
post #7992 of 9890
For example if you find a spot where that big dip goes away, and it looks like a decent reading then you can run audyssey and see how it turns out. If it gets rid of your dip but you have better readings at other frequencies at the corner and more output then you know that if you add a 2nd sub you have all of it covered. Or you can find the best spot with the one sub and get room treatments that can help you out.
post #7993 of 9890
G
Quote:
Originally Posted by Blackmambakila View Post

For example if you find a spot where that big dip goes away, and it looks like a decent reading then you can run audyssey and see how it turns out. If it gets rid of your dip but you have better readings at other frequencies at the corner and more output then you know that if you add a 2nd sub you have all of it covered. Or you can find the best spot with the one sub and get room treatments that can help you out.

Thanks for the advice. Sounds like a great suggestion regarding seeing if placing it anywhere else in the room takes care of the dip and then potentially buying another sub and placing it there in addition to the one in the corner. Is that dip something that xt32 could fix also or what other treatments could bring that up? Moving the seating position forward actually made the dip worse.
post #7994 of 9890
It's amazing how only a foot and a half or so in any direction produces such different bass levels. Very interesting to see the measured results right before your eyes with rew. I had a feeling I was missing out on mid-bass slam and seeing it makes me feel better that there is a problem and it can be fixed!
post #7995 of 9890
Quote:
Originally Posted by FLViking2011 View Post

It's amazing how only a foot and a half or so in any direction produces such different bass levels. Very interesting to see the measured results right before your eyes with rew. I had a feeling I was missing out on mid-bass slam and seeing it makes me feel better that there is a problem and it can be fixed!

Measure without Audyssey, just move it and click, move it and click. Label your spots and look everything over. If you can fix your big dips without audyssey then once you do run it, itll be freed up to make an even better reading. Your goal is to figure out whats causing your big dips and use audyssey just to give you a final touch and more gain in output. The more you figure out on your own and the more you can fix without audyssey, the better your results will be. REW is your tool to understand how your room works so that you can form a battle plan to get rid of your weaknesses. Once you fully understand how your room reacts to different frequencies, then you can make a plan to add another sub, room treatments, mini DSP, or just get the best out of the one sub you have.
post #7996 of 9890
Quote:
Originally Posted by Blackmambakila View Post

Measure without Audyssey, just move it and click, move it and click. Label your spots and look everything over. If you can fix your big dips without audyssey then once you do run it, itll be freed up to make an even better reading. Your goal is to figure out whats causing your big dips and use audyssey just to give you a final touch and more gain in output. The more you figure out on your own and the more you can fix without audyssey, the better your results will be. REW is your tool to understand how your room works so that you can form a battle plan to get rid of your weaknesses. Once you fully understand how your room reacts to different frequencies, then you can make a plan to add another sub, room treatments, mini DSP, or just get the best out of the one sub you have.
Cool. Thanks for the info and congrats on your second triax. Must be bass bliss!
post #7997 of 9890
Quote:
Originally Posted by FLViking2011 View Post

Cool. Thanks for the info and congrats on your second triax. Must be bass bliss!

Thanks! Im actually dizzy at the moment, im listening to these crazy bass drops lol!
post #7998 of 9890
Quote:
Originally Posted by FLViking2011 View Post

Not sure if there is anything I can do to help with the dip between 50-70hz and the difference between seating positions other than getting an additional xv-15 and a receiver with xt32.

Give consideration to a second XV15 on the opposite wall.
post #7999 of 9890
I didn't know you can buy pre calibrated mics.

Anyone have a link to help me get a whole setup.

How do these graphs help u determine where to put acoustic panels
post #8000 of 9890
Quote:
Originally Posted by Holiday121 View Post

I didn't know you can buy pre calibrated mics.

Anyone have a link to help me get a whole setup.

How do these graphs help u determine where to put acoustic panels

heres the one I got recently
http://www.parts-express.com/dayton-audio-umm-6-usb-measurement-microphone--390-808
post #8001 of 9890
Quote:
Originally Posted by Holiday121 View Post

I didn't know you can buy pre calibrated mics.

Anyone have a link to help me get a whole setup.

How do these graphs help u determine where to put acoustic panels

REW has different modes to show frequency responses, output gain or loss, room decay, ect. once setup, within seconds you can see how your room changes in response to speaker placement, speaker upgrades, room treatments, ect. you save all your charts and label them. anything you do different can be compared from your laptop, its awesome!!!
post #8002 of 9890
the more you learn and the better you get with REW, the more things you can do to improve all of your sound quality and speaker performance, it never ends eek.gif the reason why so many people advise this is because youll learn so much about how speakers work and how they react differently in each persons room. theres a lot of things that you can do yourself to improve what you have without spending money, and you have even more options when funds are available. its a great learning experience and you can get your HT setup working great and make improvements the smart way.
post #8003 of 9890
for example, this is my room before I got my mic and used REW. not too bad, I did have a dip from 70hz-80hz. this is with Audyssey off.







then I started moving around my 2 subs and looked over the charts, none were better and I couldn't get that dip to disappear. then finally I found out which sub needed to be moved and finally without Audyssey I got a better reading.







Then I ran Audyssey and got an awesome final result. this is just the simple way to start out by making sure where and how you have your speakers are the best possible. after this you can add more subs for more output, bass smoothing, and an even flatter reading. you can also see if your other speakers are working the best. then you can see other potential upgrades such as a better AVR or room treatments. just depends on your funds and how far you want to get with your setup.


heres with Audyssey after I was done. the volume was set to 80dbs so its well above that level in output, room gain and Audyssey is working in my favor to give me even more power.





heres an overlay where you can pick which tests to compare together


post #8004 of 9890
^^That is very good. Problem with using REW I am afraid of is that once I have the best looking graph, the two subs cannot be placed there (in the middle of the room for example). Without REW, I wouldn't know/notice which can be a good thing smile.gif
post #8005 of 9890
Quote:
Originally Posted by basshead81 View Post

No...Rew does not sync correctly with the UMM-6. While the UMM-6 comes with a calibration file, you still need a spl meter to calibrate rew to the mic or your levels will be off about 20db. Its not that difficult...I can make a short video if need be. Supposedly the UMIK-1 does not have this issue, but I have not verified this.

I can confirm the UMIK 1 doesn't require any additional calibration (you do need the calibration file from miniDSP) to take SPL readings. The SPL readings I get from the UMIK 1 match my Radio Shack meter. smile.gif
post #8006 of 9890
Quote:
Originally Posted by Cowboys View Post

^^That is very good. Problem with using REW I am afraid of is that once I have the best looking graph, the two subs cannot be placed there (in the middle of the room for example). Without REW, I wouldn't know/notice which can be a good thing smile.gif

+1 lol
post #8007 of 9890
Quote:
Originally Posted by Cowboys View Post

^^That is very good. Problem with using REW I am afraid of is that once I have the best looking graph, the two subs cannot be placed there (in the middle of the room for example). Without REW, I wouldn't know/notice which can be a good thing smile.gif

True you could end up finding out that the best place is somewhere where you cant locate it. Then theres also a possibility that a person could fix some dips that they can work around and get improvements that they never felt before. Its one of those things thats just worth a try, imagine having dips there the whole time and missing out in the fun without even knowing. I wonder if once a person has identified where theyre losing out at, they could still fix it by room treatments or maybe even a mini DSP? Even rearranging a setup and furniture could be a fix. Im so far away from knowing all of REWs capabilities but so far it seems like such a vital subject to learn about. Man I wish I was a wiz like so many people here, its like a science! Lol
post #8008 of 9890
Lol! Haha finding out something is how you dont want it to be, that would suck! smile.gif
post #8009 of 9890
Quote:
Originally Posted by Blackmambakila View Post

True you could end up finding out that the best place is somewhere where you cant locate it. Then theres also a possibility that a person could fix some dips that they can work around and get improvements that they never felt before. Its one of those things thats just worth a try, imagine having dips there the whole time and missing out in the fun without even knowing. I wonder if once a person has identified where theyre losing out at, they could still fix it by room treatments or maybe even a mini DSP? Even rearranging a setup and furniture could be a fix. Im so far away from knowing all of REWs capabilities but so far it seems like such a vital subject to learn about. Man I wish I was a wiz like so many people here, its like a science! Lol
Agree with you but can you imagine after telling the wife dropping 3 grands for this sub or subs will yield the best bass I can possibly get for the money, then turn around and tell her 'honey, I need to hang a few black panels in our living room' frown.gif
post #8010 of 9890
Quote:
Originally Posted by Cowboys View Post

Agree with you but can you imagine after telling the wife dropping 3 grands for this sub or subs will yield the best bass I can possibly get for the money, then turn around and tell her 'honey, I need to hang a few black panels in our living room' frown.gif

Lol! Tell her the panels are for saving money on the heating and cooling bill, theyre just some modern advancements that everyones getting lol smile.gif
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