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jayed
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Joined: Apr 1 2014 - 11:19am
Chesky Test Disc

Greetings...still a newbie here trying to tweek...For a little background - original I placed my speakers for the widest equal lateral distance and still have my listening position near the 38% point (see pic in the galleries posts). After doing some more research I tried using the Cardas calculations for speaker placement and a near field listening position (turns out my listening chair still stayed the same - only had to move my first reflection point absorbers)...the results are awesome as far as imaging/sound stage (having the speakers so close to me took some getting used to!)

Now my question - I used the Chesky Test Disc for toeing in the speakers(using a laser level)- the "over" and "lateral tones" sound really close to "perfect" after tweeking - but the "up" tone on the right speaker starts out about 3 feet up and hangs there - then gradually drops back down and finally climbs back up to 6 feet or so. Anyone have any ideas what might be causing this? Thx

wkhanna
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up up & ......

Hi Jayed.

Send me your test disc and maybe I can help.....?

Seriously, I do not have the test disc you refer to.
But one question I have is.......
Is your room symmetrical?
Is there anything in room or the layout that might obviously cause un-equal response from the speakers?

Bill

michael green
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test CD's and formulas

Hi Jayed

Test CD's and formulas only give you a "one setting" perspective of the sound. This may be a general guide but really has nothing to do with what is on a recording from a studio. Studio productions are all over the map in their settings and if you set up your system to sound good for one setting it will play some music great, some ok, and others poorly. The best thing to do is learn your system and learn your recordings and figure out how to bring the most out of them as individual units of music. You might find a general setting you like but for those recordings that stray (and all systems do this) you will then know the tricks of your system and room to dial them in. Also first reflection tuning is a bit of a myth and you will find that the whole area between you your speaker and the walls floor and ceiling have magic spots to tune. Their not all the same and they too can be recording dependent. Like if you hear a recording closed in, and move the reflective treatment back toward you, you will hear the stage open up. You can use this area like a focus on a camera. Also you can get a cleaner sound if you treat those areas with a barricade product over a direct absorbing one.

So with the test you just did, look at the acoustical product on the right side and possition it to make the record test straighten out. If you can't get this to work it means you have possibly the wrong type of product there (hope it's not mine if not working lol), or slightly off in it's placement according to the room. Sometimes you should be using a floorstander product for your side walls and not one directly on the wall. This gives you more flexibility.

All lot of people treat the "first reflection area" when they should be treating a different area such as the space between the speaker and the front wall instead of the speaker and rear wall, this is completely room dependent, and if you play around in these two areas I have a feeling you will find a spot where the right will align with the left.

michael green
MGA/RoomTune

Catch22
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Try swapping speaker positions

See if it moves with the speaker or stays on the same side. I don't have that disc so I can't help much, but I'd want to start removing parts of the equation and narrow down the culprit.

wkhanna
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He always has good advise...

......and you do not necessarily have to swap speakers, just swap the speaker cables at the amp.

jayed
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Joined: Apr 1 2014 - 11:19am
Thanks to all for the advice.

Thanks to all for the advice. (The CD is the "LEDR" test on the Chesky label I mentioned). I was thinking I was getting a ceiling reflection at first - leaning towards possibly the ceiling fan was the culprit after relocating my speakers (although I would've suspected it to affect both speakers because it's location is identical to both speakers). As far as reflections from elsewhere in the room - I took several absorbers from the back of the room and moved them around (in front of window/ in front of furniture/ etc )and still got the same results. I will give the cable swap a go and see if it does change sides, if it doesn't I guess I'll try removing the fan... As far as symmetry in the room - there is a window on the front wall (slightly off center), and behind the listening position the room opens up a foot (and extends 11 more feet).

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