RS-P WWMTM 3 Way underway ( pic heavy )

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

where do you wan to see them ?

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

Using the same measurements, switch the displays to gated.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

45* up ...




and 45* down ...





i have given up on the top octave ....

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

i ran a sweep using 176k , slightly better but you can still see the 8k dip . setting up now for 45* vert .

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

some more on how would be helpful ,45* above tweet axis ? got all day ! it is an absolutely beautiful day to be outside measuring a big speaker in Florida today ... the kind of weather that makes living through 6-7 months of near 100* heat and high humidity worth it !!!!

MTMs can sound different that TMs because of the reduced energy that bouces off the ceiling. That's due to the woofers (mids in your case) canceling each other at some frequencies due to different distances to the mic at 45 degrees. The tweeter and mids should also have a null at about 45 degrees due to the x-over. You may find it interesting to look at, that's all.

If you want, you could reverse polariy of the mids, or tweeter, and check for a null.

You're right about the weather. I'll be out for a bit enjoying it. Back later.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

Trust your ears! Measurements can help you determine if the treble brightness is up high around 12k, or lower around 2k, or somewhere in between.

i do . Josh has taught me if it sounds right , it is !

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

i really wrestled with tweeter padding . with two of them together in my small space it was a lil too bright ...
...

Trust your ears! Measurements can help you determine if the treble brightness is up high around 12k, or lower around 2k, or somewhere in between.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

If you have time, you can measure vertically off axis, and you should see a null at the x-over frequency, and some nulls due to the mtm arangement. It will look awful, but will show what is being directed toward the ceiling and floor. No need to post it. If you don't see a null at the tweeter x-over, further investigation is in order.

some more on how would be helpful ,45* above tweet axis ? got all day ! it is an absolutely beautiful day to be outside measuring a big speaker in Florida today ... the kind of weather that makes living through 6-7 months of near 100* heat and high humidity worth it !!!!

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

i really wrestled with tweeter padding . with two of them together in my small space it was a lil too bright ...

i can still see the mic start to shut down at 8k . knowing the 28f has a raising response i'm not too concerned but am gonna run a few sweeps using some of the suggestion mentioned above and see if i can find that top octave ...

If you have time, you can measure vertically off axis, and you should see a null at the x-over frequency, and some nulls due to the mtm arangement. It will look awful, but will show what is being directed toward the ceiling and floor. No need to post it. If you don't see a null at the tweeter x-over, further investigation is in order.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

i really wrestled with tweeter padding . with two of them together in my small space it was a lil too bright ...

i can still see the mic start to shut down at 8k . knowing the 28f has a raising response i'm not too concerned but am gonna run a few sweeps using some of the suggestion mentioned above and see if i can find that top octave ...

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

Yep.... If you select a larger portion of the graph, you can display the results on a 5 dB scale which will look better, and more like what you're used to seeing. Right clicking the mouse on the screen will probably do it.

Looks like the tweeter is padded a little more than needed.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

more like you thought you'd see ?

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

got ya . no worries , i'm no hurry to move this big b!tch again so i'll be set up for a while .... lol

also that was the calibrated loop-back and the speaker is about 24" up on a table .

[rpb]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

I think something's wrong. There's no way the speaker is that flat. Disconnect a tweeter, or throw a towel over it and remeasure. Or measure 45 degrees off axis and see if it looks the same. The loopback correction file may be the issue. I'm not being negative. I really don't think the measurement is accurate.

[filmslayer]

Re: RS-P WWMTM 3 Way underway ( pic heavy )

moving outside i believe was it . my first sweep set up the same as i was using inside from 36" , both passes off , 1/12 smooth . what ya think ?