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Official PSA Triax Thread - Page 111

post #3301 of 3312
Quote:
Originally Posted by jarretc View Post

Yeah, tried it in both positions on both Triaxes. I think its just the shape of the room that is the real issue. I did a short test the other day and turned off one of the subs that I believe doesn't add to any tactile feeling and I found it it is pretty much only the one Triax that is producing most of the bass. This is without a measuring device though and just my personal feeling but walking around and standing in the bass heavy spots in the room there was very little if any change in pressurization/vibration.

The second one may be smoothing it out across the entire room though but I haven't done any measurements to verify.
For what I want/expected, they are close but not quite there just yet. I know most people will think I'm crazy but I'm looking for just a bit more pressurization. My response above is part of the problem I'm sure as the room isn't the best layout and I could probably move the subs around to get much better response. I don't watch movies that often though and as I work from home and work from my room I don't listen to music that much either.

If I worked out in the living room more often I'd be more concerned and would spend more time measuring/moving things around to get the best response.

I wasn't able to test out the Triax we got from you to see what 3 would be like.
Are both of the subs far from your listening position? If so you might want to try one in front and one behind. If you hook the third one up... I would try one behind and the other 2 either in front or one on each side of the MLP. I think you will have what you want then.

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post #3302 of 3312
Quote:
Originally Posted by Blackmambakila View Post

Awesome bro, thanks!! Did you see my latest video of the triaxes hitting 127dbs from 28ft away?
Tom posted in another forum that your meter is reading low, as he is very familiar with your meter and they all read low. He said you are most likely hitting 130db as I recall.
post #3303 of 3312
Quote:
Originally Posted by ellisr63 View Post

Tom posted in another forum that your meter is reading low, as he is very familiar with your meter and they all read low. He said you are most likely hitting 130db as I recall.

He's hitting a 127dB at 28ft away and Tom thinks that's low?
Black has a REW mic too doesn't he? Maybe he can place his REW mic beside his SPL meter and take two separate measurements.
post #3304 of 3312
Quote:
Originally Posted by jbrown15 View Post

He's hitting a 127dB at 28ft away and Tom thinks that's low?
Black has a REW mic too doesn't he? Maybe he can place his REW mic beside his SPL meter and take two separate measurements.

He is saying that the SPL meter is off a few db...I have experienced the same thing compared to what REW shows and I have the same meter as BMK. I would not be suprised if he is actually hitting 130-131db. The rat shack meters loose some accuracy above 115db.
post #3305 of 3312
Quote:
Originally Posted by basshead81 View Post

He is saying that the SPL meter is off a few db...I have experienced the same thing compared to what REW shows and I have the same meter as BMK. I would not be suprised if he is actually hitting 130-131db. The rat shack meters loose some accuracy above 115db.

Cool so when can we expect to see black redo his video with his REW mic? smile.gif
post #3306 of 3312
Quote:
Originally Posted by jbrown15 View Post

He's hitting a 127dB at 28ft away and Tom thinks that's low?
Black has a REW mic too doesn't he? Maybe he can place his REW mic beside his SPL meter and take two separate measurements.
Here is the post from Tom...
Quote:
harlington wrote: View Post
^^ His speakers are contributing to the sound level. The only way to find out if his dual Triaxes were playing at that level is to unplug all speakers and just play the same song thru the subs.
Not that we should take peak output levels from a SPL meter as anything but what it is...but the main speakers wouldn't possibly be able to contribute in any meaningful manner in this context. His meter has the old RS mic element so its going to read 2-5dB low depending on the frequency of the input signal. This means 127 indicated equals 130+ peaks.

Even if his speakers were hitting peaks of 105dB( extremely loud) their contributions to the SPL peaks would be negligible. (less than a single decibel)


Tom V.
Power Sound Audio

Read more: http://www.hometheatershack.com/forums/home-audio-subwoofers/60450-official-power-sound-audio-psa-thread-55.html#ixzz2y55mkKL1
post #3307 of 3312
Quote:
Originally Posted by jbrown15 View Post

Cool so when can we expect to see black redo his video with his REW mic? smile.gif



When I did the max spl sweep with REW( back when I only had duals) I eclipsed 132db @ 32hz. My spl meter never registered that high, it only showed 125db uncorrected which is about what the average output was from 30-80hz on my rew graph. So it makes perfect sense what Tom is saying. smile.gif

It does not suprise me BMK is hitting 128 db on his meter 27ft away. If you look at where the mic is placed, more then likely the bass is resonating off of the back wall. I bet it is louder there then in rest of the room until you get 6-8ft from the subs. I know in my room the farthest corner from my subs has the same SPL level as 1m from the subs. Output levels do drop the farther you get away from them until you get close to the reflection point. then output will normally jump back up.
post #3308 of 3312
Quote:
Originally Posted by ellisr63 View Post

Are both of the subs far from your listening position? If so you might want to try one in front and one behind. If you hook the third one up... I would try one behind and the other 2 either in front or one on each side of the MLP. I think you will have what you want then.

One sub is about 5-6 feet away from where I normally sit while the other is about 10-12 feet away

The closest one is in one corner of the room on the left side of the couch. I'm sure if I moved the 2nd Triax to the right side of the couch things would really come alive, may have to try that out soon. I know there are a lot better options most likely for where the subs should be but I just haven't had the time to move them around to test.

Not saying that the Triaxes are not capable as I'm sure they are, I just haven't properly configured them yet
post #3309 of 3312
Quote:
Originally Posted by jarretc View Post

One sub is about 5-6 feet away from where I normally sit while the other is about 10-12 feet away

The closest one is in one corner of the room on the left side of the couch. I'm sure if I moved the 2nd Triax to the right side of the couch things would really come alive, may have to try that out soon. I know there are a lot better options most likely for where the subs should be but I just haven't had the time to move them around to test.

Not saying that the Triaxes are not capable as I'm sure they are, I just haven't properly configured them yet

Hi Jarret,

When moving the Triax(or any sub) be sure to re-calibrate the system too. If not, a simple SPL boost may cause things to sound weaker/boomier when the focus should be on the overall smoothness at the seating. Well, with dual Triax that should be the focus as they'll have tons of headroom. The receiver should auto set the distance too. With duals, you may want to have the receiver "dial in" one Triax. Then add the second and tweaks things manually so you see the best combined performance.

Tom V.
Power Sound Audio
post #3310 of 3312
Quote:
Originally Posted by Tom Vodhanel View Post

Hi Jarret,

When moving the Triax(or any sub) be sure to re-calibrate the system too. If not, a simple SPL boost may cause things to sound weaker/boomier when the focus should be on the overall smoothness at the seating. Well, with dual Triax that should be the focus as they'll have tons of headroom. The receiver should auto set the distance too. With duals, you may want to have the receiver "dial in" one Triax. Then add the second and tweaks things manually so you see the best combined performance.

Tom V.
Power Sound Audio

Since I have a low level AVR (Pioneer VSX-1122-K) that doesn't have XT32 how would I accomplish this?

Or would I just plug in the first Triax and then calibrate? Then plug in the second and then adjust manually you mean?
post #3311 of 3312
Quote:
Originally Posted by jarretc View Post

Since I have a low level AVR (Pioneer VSX-1122-K) that doesn't have XT32 how would I accomplish this?

Or would I just plug in the first Triax and then calibrate? Then plug in the second and then adjust manually you mean?

Hi Jarret,

Would you be able to send me a quick room drawing? If so, please include the room dimensions, any openings into the room, the key seats, and the current speaker placement.

www.support@powersoundaudio.com

Thanks!

Tom Vodhanel
post #3312 of 3312
Quote:
Originally Posted by Tom Vodhanel View Post

Hi Jarret,

Would you be able to send me a quick room drawing? If so, please include the room dimensions, any openings into the room, the key seats, and the current speaker placement.

www.support@powersoundaudio.com

Thanks!

Tom Vodhanel

Sure! I'll work on it later tonight and send you an email smile.gif
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