Need a Help from Room Treatments

BlueMcIntosh said:
Thanks Mike.here is the dimension.

u8a6u5y7.jpg
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Start with tweeter to tweeter measurement and multiply that by 1.25. Move your seat back so that your ears are that distance from each respective tweeter. So, assuming your tweeter are 108 inches apart, then move your ears are 135 inches from each respective tweeter. Start there. I find the ratio ends up being somewhere between 1.1 to 1.25.

Do you know how to find the Zone of Neutrality in your room? That's the place in your room where there is little interaction with walls.

But let's start with the right distances.


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Mike said:
Start with tweeter to tweeter measurement and multiply that by 1.25. Move your seat back so that your ears are that distance from each respective tweeter. So, assuming your tweeter are 108 inches apart, then move your ears are 135 inches from each respective tweeter. Start there. I find the ratio ends up being somewhere between 1.1 to 1.25.

Do you know how to find the Zone of Neutrality in your room? That's the place in your room where there is little interaction with walls.

But let's start with the right distances.


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Click to expand...

Good advice. I spent a good portion of the day setting up my speakers. Right now, I'm a little outside of the 1.25 boundary, but still tweaking/experimenting with speaker/listener positioning...
 
Mike said:
Start with tweeter to tweeter measurement and multiply that by 1.25. Move your seat back so that your ears are that distance from each respective tweeter. So, assuming your tweeter are 108 inches apart, then move your ears are 135 inches from each respective tweeter. Start there. I find the ratio ends up being somewhere between 1.1 to 1.25.

Do you know how to find the Zone of Neutrality in your room? That's the place in your room where there is little interaction with walls.

But let's start with the right distances.


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Click to expand...

Wow. Thanks Mike. Will check the distance as soon as I get home. Please guide me to right positioning :)
 
Paul - once you get that done, we will work on the beginnings of the ZON and finding the spot away from the front wall and side wall(s) which has the least amount of interaction. You will need some blue painters tape. You may need to momentarily move the tube traps and speakers so we can get an accurate zone on each side. In a 14 foot wide room, I would suspect we will have a ~2 x 3 rectangle.

I need to know the distance from the side walls to the side of the speakers now. Looks about 12 inches.
 
Mike said:
Start with tweeter to tweeter measurement and multiply that by 1.25. Move your seat back so that your ears are that distance from each respective tweeter. So, assuming your tweeter are 108 inches apart, then move your ears are 135 inches from each respective tweeter. Start there. I find the ratio ends up being somewhere between 1.1 to 1.25.

Do you know how to find the Zone of Neutrality in your room? That's the place in your room where there is little interaction with walls.

But let's start with the right distances.


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Click to expand...

that is awesome advise!!! im holding my tape measure up to my ear now but it keeps breaking when i get it close to the tweeter. guess laser ruler is the way to go here.lmao!!!!!
oh are those tweeters toed in right at your ears, or crossing behind your head?
im closer than 1.25 and my tweeters probably cross a couple feet behind my head. seems when i toe them in any closer then i want to move my chair closer to get the best sound.
im all ears on this, i want to learn. just blind moving speakers around and my seat around and sitting high or low in the chair is getting to me, i need to add some science to this
 
Steve - it all depends on the speakers, there are no hard and fast rules. But GENERALLY speaking, tweeters aimed at your ears. I set my Bosch laser measurer on top of the speaker, in the middle of the speaker, get it flush with the front and aim it at my listening position. Gives me a laser beam to the right spot on the chair where my ears are. You would be surprised when you think you have it dialed in (by just eyeing it - looking at the speakers) - you don't! The laser is invaluable. I would say getting the tweeters lined up properly at your ears is critical to producing a properly centered image whereby vocals are realistic (meaning, with eyes closed, the singers voice appears to be a mouth width - and not 8 feet wide!).

I like to use a few different songs for this: Linvingston Taylor - Isn't She Lovely (the first 60 seconds where he is whistling) and Celine Dion - What a Wonderful World from her Miracle CD. She does the first part of the song a cappella.
 
As a side, another way to look at the 1.1 to 1.25 multiplication of tweeter to tweeter distance to determine seating distance is Jim Smith's guide. He uses a general starting point of 83% of the seating distance (ear to tweeter) to determine the tweeter to tweeter distance.

Same thing essentially - just another way of calculating it.

Keep in mind these are just starting guidelines for most speaker setups. These guidelines do not apply to Raidho speakers for example.
 
I have to try that measuring technique, Mike. I've been going the other way, from listening to speaker, which may not be as accurate.

I also like to use some a cappella pieces to help dial things in as well.
 
Mike said:
Steve - it all depends on the speakers, there are no hard and fast rules. But GENERALLY speaking, tweeters aimed at your ears. I set my Bosch laser measurer on top of the speaker, in the middle of the speaker, get it flush with the front and aim it at my listening position. Gives me a laser beam to the right spot on the chair where my ears are. You would be surprised when you think you have it dialed in (by just eyeing it - looking at the speakers) - you don't! The laser is invaluable. I would say getting the tweeters lined up properly at your ears is critical to producing a properly centered image whereby vocals are realistic (meaning, with eyes closed, the singers voice appears to be a mouth width - and not 8 feet wide!).

I like to use a few different songs for this: Linvingston Taylor - Isn't She Lovely (the first 60 seconds where he is whistling) and Celine Dion - What a Wonderful World from her Miracle CD. She does the first part of the song a cappella.
Click to expand...
thanks im gonna mess around with that a bit, see how it works out.
 
Mike. Tweeter to Tweeter is 113 inches and my ears are 133 inches from each tweeters. The speakers are 19 inches from side wall on left side and 26 inches from right side.
 
BlueMcIntosh said:
When you doing this do you do any toe in ? or straight angle ? ( Speakers )
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Toe in. Get behind the speaker and try to ensure the middle of the speaker is aimed at where your ear would be. If you have a laser measurer - all the better - as I detailed above.
 
BlueMcIntosh said:
Mike. Tweeter to Tweeter is 113 inches and my ears are 133 inches from each tweeters. The speakers are 19 inches from side wall on left side and 26 inches from right side.
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it worked for me paul!!!!

i had moved my speakers back a couple of feet 3 months ago, i had a chair in front of my couch, to listen to music. uncomfortable and looked stupid. but i felt i had to get up in those speakers. i just measured, exactly 102 inches tweeter to tweeter, i measured where i used to sit on my couch and that was about perfect. 124 inches to where my ears would be. i busted out my laser level, and the speakers were out of whack. i toed them so the laser pointed exactly where my ears would be, and sat down for a listen...................... holy crap!!!!!! the bass is way more pronounced the soundstage is deeper and wider filling the whole room instead of just my little area
mike you fixed my room!, just from some 1.25 thing.lmao!!! i was way too close and the tweeters were way too wide.
now i need to unload some clutter and get allen over to measure my room, and get some panels and diffusers in the right places. thx!!!
 
Hahah. Good for you Steve. I'm sure any body reading this topic would looking for a measuring tape right now. Thanks Mike :)
 
You're both welcome. I have a very defined process developed over a 30+ year process of being OCD on speaker setup. I am happy to share.
 
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