SubMaximus -- A Large Front-Loaded Horn for UXL18 and Stereo Integrity HT 18" - Page 13 - AVS Forum
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post #361 of 490 Old 06-06-2014, 09:25 AM
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There is no XO.
strictly sub sweep only

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post #362 of 490 Old 06-06-2014, 10:08 AM
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Then I wouldn't worry about the null until you get it running with the mains.

 

But that's me; you can worry if you like. ;)

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post #363 of 490 Old 06-06-2014, 11:53 AM
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Quote:
Originally Posted by asarose247 View Post

image of sweep at 48.5" loading distance from right rear corner, dealing with 70 room mode dip



strange that you'd mention the zip app as I just got a notice my free trial is up in 2 days. if I come up with a good fix i'll let you know.
NP

EDIT: AVS does not permit uploading of the REW mdata files unzipped as images and as attachments have to be zipped
that's been my experience so far

Whatever you did there looks fantastic! Just the image upload works fine as you have apparently figured out smile.gif Response looks incredible. Still quite impressive at 10hz!

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post #364 of 490 Old 06-06-2014, 01:05 PM
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DATA

sub moved 6'6" up to right wall ow same distances, D to mike 6'6" from horn center

june6max.zip 101k .zip file



sweeps of mains, pure direct, stereo

june6mainsweep.zip 270k .zip file

mainsweep image 40 to 200, stereo, pure direct sweep 2, distance to mike @MLP 11' mol




image smoothed 1/6



suggestions?
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File Type: zip june6max.zip (100.8 KB, 7 views)
File Type: zip june6mainsweep.zip (270.0 KB, 5 views)

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post #365 of 490 Old 06-06-2014, 01:22 PM
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I'm not sure I understand why, but the REW threads suggest sub(s)+center only, so use one of your receiver's Dolby settings and/or disconnect the L and R speakers.

No smoothing on bass sweeps.

The dip isn't really that bad, but you might want to play with the XO, anyway.

 

Uh, how does it SOUND?


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post #366 of 490 Old 06-06-2014, 01:41 PM
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I'm in the process of starting to set some of that up pending any further input wrt to PEQ and/or HPF and location testing suggestions.

Using the 2 BFTHTLP's with the 7 speakers after the 6 position YPAO in game mode for the new Wolfenstein gets to be easily and noticeably intense.

I have to move the BF subs to the back wall, disconnected , they are on wheels and the usual PITA dis/re/connecting of components.

and iirc from the Audio theory/setup REW thread, connecting to the center has to do with Dolby PL II mode. iirc?

all in good time , right now its more about the learning and trying whatever,
being retired this keeps me out of trouble and its quite interesting observing the changes and possibilities

considering the spl levels I report in terms of testing MAX, it usually sounds like I need to wear earplugs while running those sweeps

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post #367 of 490 Old 06-06-2014, 02:00 PM
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Quote:
Originally Posted by asarose247 View Post

and iirc from the Audio theory/setup REW thread, connecting to the center has to do with Dolby PL II mode.
 

Right.


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post #368 of 490 Old 06-08-2014, 02:18 PM
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Graphs and data files
starting out
ambient hi 40's, fronts @ mol12 ft from mike @ MLP and sub 198 inches from front wall on right wall just behind MLP, no 775 PEQ, xo 60 ,sub gain 0, 6K at 1:00 position, SPL calib @ 155, 6K for sub still has PEQ from previous posts, no HPF

june7sweeps.zip 490k .zip file

this post specs: green is sweep #2 amp 775 @ -25 vol. no sub gain or PEQ for 775
gold is average of sweeps 4 and 5 with 775 volume @ -20, sub gain @ +2, xo 60, L,R PEQ@ 67.7 HZ, Q=2, Gain=2, Dip @ 83 is room mode (?)




that's a rather narrow dip so if you smooth it 1/6th it kinda goes away




I maybe able to address it several ways with running YPAO (check the manual-there are several modes) and/or running REW and then using my Berry 1124 for the fronts, as they run off the UPA7.

I will try upping the both the Q and gain just to see what happens


But I'm also more interested in addressing the lower corner loading/response/level issues.

Why do my REW setup calibs seems so HIGH?

Feedback and testing suggestions appreciated.

the more time I spend with this testing phase, the easier and more interesting it gets so now is the time for
What If ? . . .
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post #369 of 490 Old 06-08-2014, 03:23 PM
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EQ: cut the peak at 40 and add a house curve at 20 and you're done.

Okay, not really, but you'll be very happy.


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post #370 of 490 Old 06-08-2014, 04:12 PM
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Thank you

LTD02 gave me the instructions for a HPF @ 20 and a way to push the shelf down so I may start slowly in that direction.

I've also had a warning against using such tuning on this "low tuned" sub , not needed if you just don't get too pushy

the advice was that if I used such a setting and I might as well just run the BF subs really hard . . .(or even harder than I do) and for the content of most stuff, I'ds be high on the curve

I didn't build MAX for exemplary subtlety, more like sublime woofage

And I haven't really tried pushing the Inuke too hard at all. What do I need to do see what that is like, and still have a sub.

REW sweeps of the sub itself are a challenge to every movable object in the house . . . . I can fix most of that.

If I put the sub back in the corner at the rear of the room, maybe the YPAO/Berry 1124 can fix the 70 hz room mode, because the loading/response from back there is seemingly acceptable.
please, go on . . .

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post #371 of 490 Old 06-09-2014, 07:26 PM
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Graph and data file
6-9PEQandHPFsweepsforMAX.zip 499k .zip file
I ran out of "limits"

as a combo of sweeps 3,4,5: HPF 20 hz, 12 DB butterowrth,
gain for 3 @0,
# 4 & 5 @ 2.0,
PEQ1: 99 hz, gain -8, Q=1, PEQ2@ 25.2, Q=1.0, Gain +8 (I can't seem to get the Inuke to take a 1.4 value for my Q as LTD02 recommended)
calib SPL @ 156, distance for #3 & 4@ 2meters plus 31",
#5 @ 2 meter mark wrt to initial sweeps after sub moved into house;
mike @ MLP, 6K volume at 1:00 position
#5 shows a slight dip @ 38.5 but significant improvement @ 87 but with an expected xo of 60 (or less) its a YPAO or Berry 1124 "fix"

Why is the initial calibration setting so high, it seems to keeps getting higher.





Is this looking feasible or close to it at this time?
Heading in the right direction?

I still need to fix the "zip" utility problem. off to it . . .
will post data files soon

as always , suggestions welcomed


EDIT: data files added
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post #372 of 490 Old 06-09-2014, 10:47 PM
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reduced laptop output 100 to 50%, no HPF, PEQ, distance is 2meters plus 31", ambient hi 40's, setup SPL 165

is there some recal needed for the mike, it just seems so high!



and the data

jjerrylate6950percentsweep.zip 101k .zip file



I'll attack this all again tomorrow for more usable results, easpecially wrt to saving my inuke settings.

what a noob

thanks
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post #373 of 490 Old 06-10-2014, 12:46 AM
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short brainstorm

ran chalugadp's quick set advice but i am missing the ability to set values exactly,




chalugatestjune9.zip 200k .zip file


for comparison
sweep 2 purplish is sweep 1 (green) after applying the 4 suggestedPEQ filters for 15 to 60 hz (or as close as i could) (give me a clue!)



and then filters applied sweep smoothed 1/6th.



so between 15 and 60 maybe looking as a good start?

no HPF yet.
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post #374 of 490 Old 06-10-2014, 01:00 AM
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Looks pretty good to me from 20 to 80hz. That little dip around 35hz is pretty small. I never get obsessed with ruler flat. It looks a lot like mine with the little dip at 35. Except mines a few dB's less smile.gif. At your point I would leave it and play a few clips you know well. Maybe tweak it a bit more but your close.
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post #375 of 490 Old 06-10-2014, 08:22 AM
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You will want to recalibrate SPL under the preferences tab, using a standalone spl meter if you have one to get the right levels again. You will adjust down the sensitivity on the pop up box you will get in REW to match your standalone spl meter.

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post #376 of 490 Old 06-10-2014, 08:33 AM
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Quote:
Originally Posted by asarose247 View Post

so between 15 and 60 maybe looking as a good start?
 

Not even close.

 

...

 

 

It's FABULOUS!

I'm sure it sounds great. When are you having us over?

 

Enjoy.


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post #377 of 490 Old 06-10-2014, 09:38 AM
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Quote:
Originally Posted by beastaudio View Post

You will want to recalibrate SPL under the preferences tab, using a standalone spl meter if you have one to get the right levels again. You will adjust down the sensitivity on the pop up box you will get in REW to match your standalone spl meter.

 

Will,

 

How you doing buddy.  Gimme a call if you need any help with this step.  I can explain it over the phone real quick, and tell you exactly what to click.  

 

ps- if your avail Friday, think i could stop by for a bit, and hear the new beast?  If you have the hulk on blu-ray, id love to hear it.  If you dont have it, I can bring it over.  

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post #378 of 490 Old 06-10-2014, 10:24 AM
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Quote:
Originally Posted by kevings View Post
 

ps- if your avail Friday, think i could stop by for a bit, and hear the new beast?

Sure, rub it in.

;)


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post #379 of 490 Old 06-10-2014, 11:04 AM
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thanks for the feedback and humor
I also got some very good insight from AustinJerry from the REW thread
this afternoons project is to tame that runaway SPL , I have a RS SPL meter, and do some more targeted tuning, maybe try some sweeps with the fronts only, the 775 has some PEQ for each speaker.
Yes, I do wear earplugs for those sweeps. That sht is LOUD! And there's a whole lotta shakin' goin' on . . .

its not an 818 or a X4000 but it can really rock the new Wolfenstein (using the BF subs)

looking to keep 60 as an xo

The roommode dip @ 87 hz is going to be an interesting resolution. so there will be some YPAO work.

and I also have the option to use the Berry 1124 for the fronts but I've been warned that type of
'suckout" can be tough

and from chalugadp who reminded me to USE THE DIALS for my settings -I completely "forgot " (NOOB!)

another day at the office . . .

Kevings, sent you a PM, lets make some history on Friday . .

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post #380 of 490 Old 06-10-2014, 11:28 AM
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Quote:
Originally Posted by asarose247 View Post

The roommode dip @ 87 hz is going to be an interesting resolution. so there will be some YPAO work.

It's too narrow. Ignore it.

Really.


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post #381 of 490 Old 06-10-2014, 05:25 PM
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Data using HFP

Tried chalugapd's quickie set up last night and this is the PEQ setting for today (as close as I could get them)

#1 28 Q= 3, gain -5
#2 35 Q= 6, gain 9
#3 42.6, Q= 6, gain -8
#4 55 Q=2, gain -15

sweep 1 for "reference' no HPF

and gains noted for sweeps 2 thru 7 HPF 20 hz, B'filter 12 Db

june10HPFsweeps.zip 738k .zip file


and a capture for sweeps 6 and 7 compared to 1



posted while I take a break and set up to reconfigure for sub-LF-RF incursions

in sweeps 6 and 7 the roommode 83 ish dip mitigates a bit but I hope to set the xo @ 60.
we'll see
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post #382 of 490 Old 06-10-2014, 05:51 PM
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How accurate is the SPL on the 150-180 dB sweeps I am seeing?


AVR:       Yamaha RXV-375

Display:  Panasonic  TH-50PC77U

LCR:       Hsu HB1.2  HC1.2

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Apple TV

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post #383 of 490 Old 06-10-2014, 06:40 PM
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Thanks for asking this is a major point also brought up by AustinJerry

in order to do the recalib, I've had to set things up to do 2.1 testing as the signal used in a manual cal, as far as I can tell from the REW help manual and manual cal procedure in the "preferences" window , is 1K which I did not think would be good for the sub alone.

so I've almost completed a switch over to running the sub thru the 775 so I try the manual recal using the fronts and sub with the fronts set to small and an xo of 60. i'll leave the sub with the PEQ , as posted, and HPF (10) (sweep 7) and see what my RS SPL meter can reveal.
obviously this is quite critical since there is something not quite right about the reporting sensitivity and WTF SPL levels, but that may be part of a problem with the laptop sound card and using the headphones out as REW signal source to the Inuke.

I switch to using the HDMI out on the laptop for REW to the 775 but although I have the ASIO stuff, alas, I can't do 8 channel testing.

I'll report back after some more sweeps and dinner.

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post #384 of 490 Old 06-10-2014, 08:12 PM
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Trouble with a capital WTF as in a SNAFU wrt to unuploadable zip files,
there were some interesting developments with 2.1 but I have to try and resave the data after a break . . .

however, for your viewing enjoyment, one that looks promising . . .

2.1, Fronts set to small, sub xo @ 40, same PEQ and HPF gain @ 10, no sub or fronts gain in the 775, stereo and fronts thru the UPA 7, smoothed 1/6



I realize that there are issues with decay and resonance in the room and there always will be. a topic for later analysis

I don't think my recal effort was successful, I floundered most diligently .

also moved the sub up to the 2 meter mark.
looks reasonable?
critique away

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post #385 of 490 Old 06-12-2014, 12:42 PM
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HELP data files .zip now limited to 97.7 kb ?
a review of my uploads sorted by size shows me that sharing data here just may be a thing of the past . . .
so I'm asking for help wrt to a work around until what ? a better zip app, they fix this?
or upload one data file at a time if you can keep in under the limit?

Denon X4000 , Emotiva UPA7, Yamaha 663 for 14.3, configurable from 10.3 and up
Klipsch F3 FL/R, G-28 CenterLow, Icon 25 CenterHigh, RC3II: SL/R SLX: Rears ,TF & TR, RB51's:FH
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post #386 of 490 Old 06-12-2014, 02:15 PM
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Sprectrgram of sweep in post 384
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Denon X4000 , Emotiva UPA7, Yamaha 663 for 14.3, configurable from 10.3 and up
Klipsch F3 FL/R, G-28 CenterLow, Icon 25 CenterHigh, RC3II: SL/R SLX: Rears ,TF & TR, RB51's:FH
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Mitsy DLP 73837 Xbox1 PS4 Panny BD 220
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post #387 of 490 Old 06-12-2014, 03:05 PM
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Quote:
Originally Posted by bear123 View Post
How accurate is the SPL on the 150-180 dB sweeps I am seeing?
Not accurate at all... asarose247 would be dead... or close too it.

First graph I saw that peaked over 140db had me scratching my head like WOW... 157db @ 10Hz is literally unimaginable.
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post #388 of 490 Old 06-12-2014, 03:11 PM
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Quote:
Originally Posted by popalock View Post
Not accurate at all... asarose247 would be dead... or close too it.

First graph I saw that peaked over 140db had me scratching my head like WOW... 157db @ 10Hz is literally unimaginable.
Perspective.

Piston Excursion Calculator

Draw your own conclusion...
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post #389 of 490 Old 06-12-2014, 03:30 PM
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Quote:
Originally Posted by jbrown15 View Post
Quote:Originally Posted by Gorilla83 

I'd imagine at least initially should the flat pack / pre-built idea come to fruition it would be offered locally and/or for delivery. As far as shipping it might be best to have the most difficult panels, sides, and bracing cut and those shipped alone to cut down on costs.


You could also offer to sell the plans/file to anyone that was serious about building one of these that was too far away to pick one up from you. I would think that most people living in any major city would be able to find a local wood shop with a CNC machine willing to cut up the wood. I have made a few calls to some of my local shops and all of them were willing to help me out as long as I had the files with all the proper cuts.
Is there a file that's ready to just hand to a cnc shop locally ?

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post #390 of 490 Old 06-12-2014, 03:31 PM
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So what is the real world output of one of these at say 30hz? Is this tested yet ?

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