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post #18181 of 31493 Old 03-31-2015, 08:32 AM
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Originally Posted by jhughy2010 View Post

If I install a Y adapter do I need to re-run MCACC? Will this affect anything else?
If MCACC EQ's the sub, I believe that you will need to re run as IIRC the splitter ads a few DB in a similar fashion to increasing the gain.
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post #18182 of 31493 Old 03-31-2015, 09:31 AM
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Originally Posted by Brian Fineberg View Post
ok I love walls!

here is no audyssey..no minidsp...just raw response in new HT


black is the winner...both subs up front behind screen
pink one front one back corner
single digits is fun


Brian,

Did you swap phase on one sub when you had one in back? I think PINK has more potential than you may think...BLACK has a HUGE null between 80-120hz!
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post #18183 of 31493 Old 03-31-2015, 09:34 AM
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Originally Posted by jhughy2010 View Post
Oh wow is that the only solution? I would have to get two of them because my subs are pretty far apart and plugged into different outlets.

I played around with a bunch of settings in my AVR last night. Nothing seems to do it. Plus doesn't do much either.

Like I said they only switch off for TV shows and some DD+ shows/movies. DTS-HD seems to trigger them on right away.

I've read that adding a Y adapter can help trigger them on. If this is the case will that mess with having the sub set to LFE? (the black input says LFE).

Using a y-splitter will add 6db to your output. If you have range left in the sub trim, you can just turn it down 6db...if not, you'll have to re-run MCACC.
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post #18184 of 31493 Old 03-31-2015, 09:46 AM
 
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Originally Posted by Alan P View Post
Brian,

Did you swap phase on one sub when you had one in back? I think PINK has more potential than you may think...BLACK has a HUGE null between 80-120hz!
no didnt touch phase..

I forgot to turn off the 80Hz xover...so thats what you are seeing...the above that must be resonance

maybe pink is the winner...Ill take more measurements today
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post #18185 of 31493 Old 03-31-2015, 10:10 AM
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Yeah, adjust phase on the rear sub for highest SPL at the MLP and re-measure...you may be pleasantly surprised.

Even with the xover at 80hz, that sure looks like a null to me. Did you use CH4 output in REW?? If so, the xover didn't matter.
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post #18186 of 31493 Old 03-31-2015, 10:17 AM
 
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Originally Posted by Alan P View Post
Yeah, adjust phase on the rear sub for highest SPL at the MLP and re-measure...you may be pleasantly surprised.

Even with the xover at 80hz, that sure looks like a null to me. Did you use CH4 output in REW?? If so, the xover didn't matter.
i dont have hdmi on my macbook

I have to use headphone jack out
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post #18187 of 31493 Old 03-31-2015, 10:29 AM
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Wait a minute, your AVR has XT32....never mind what I said about phase.

You should run Audyssey though with the one sub in back just to see what you get after XT32 time-aligns the subs. If you used the same two sub distance settings for both measurements above, the "one in back" graph is going to be whack because the subs aren't properly time-aligned.
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post #18188 of 31493 Old 03-31-2015, 10:33 AM
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Just placed an order for an S1500...so stoked that Tom V is back in the game! I had no idea until yesterday that Power Sound Audio even existed.

Can't wait to give this a listen!

All hail the "Sub-Human"!!!!
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post #18189 of 31493 Old 03-31-2015, 10:37 AM
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Originally Posted by ggallaway View Post
RE: Mini DSP, had some time to do some playing around yesterday with my V1500, I also have a Turbo MFW-15. While trying to "gain" match these two subs I ended up needing to run the V1500 at MAX Gain. First, is that a problem? Second, if it is I understand that the Mini DSP rev B comes standard with the jumpers set to 2v input and .9v output which causes a 7db attenuation in the signal. should these be changed? My room is relatively small (~2300^3ft) and sealed. I generally listen at around -20 to -25 on the volume dial so perhaps all this is moot Any Suggestions/comments?
I would suggest using a Y-splitter at the input to your sub to add back 6 dB of input signal. This will help with potentially having your gain at near max when used with the mini-DSP
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post #18190 of 31493 Old 03-31-2015, 10:38 AM
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Quote:
Originally Posted by Brian Fineberg View Post
ok I love walls!

here is no audyssey..no minidsp...just raw response in new HT


black is the winner...both subs up front behind screen
pink one front one back corner
single digits is fun
Wow...bad ass extension Brian!!
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post #18191 of 31493 Old 03-31-2015, 10:39 AM
 
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Wow...bad ass extension Brian!!
right?

they always started to drop off around 13-14! now they dont start to drop until 8!!
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post #18192 of 31493 Old 03-31-2015, 12:13 PM
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Unboxing photos and side-by-side with the V1500 and S3000i now up on my thread: PSA V1500 vs. S3000i: My Big Room Challenge

A: Marantz AV7702 | McIntosh C2300 | McIntosh MC452 | Martin Logan Theos | Martin Logan Motif X | PSA S3000i (x2)
V: Vizio P702UI-b3
S: VPI Traveler v2 | Ps3 | Roku 3 | Apple TV | Parasound Zdac
Best ID Subwoofers by Price and Vendor (outdated; to be updated)
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post #18193 of 31493 Old 03-31-2015, 01:48 PM
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Ah, nothing like having the bank call me during lunch break saying that my card has been blocked due to unusual activity.

As there people stupid? Buying PSA is never unusual! And it's not like I haven't done it in the past... a couple of times.
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Yippee-ki-yay...
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post #18194 of 31493 Old 03-31-2015, 02:08 PM
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Originally Posted by Brian Fineberg View Post
right?

they always started to drop off around 13-14! now they dont start to drop until 8!!
Brian I'm using a UMIK-1 from miniDSP, can it do below 10Hz measurements, also the gain on my mic is 18dB, isn't that high? I think I got thinks working again and here are some graphs with L, C and R channels + subs. Terrible aren't they. Where do I go from here, please guys give me directions, all input appreciated. Did I at least post the graphs appropriately?
Cheers Jeff

EDIT third graph is the wrong one

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post #18195 of 31493 Old 03-31-2015, 02:20 PM
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Originally Posted by Brian Fineberg View Post
right?

they always started to drop off around 13-14! now they dont start to drop until 8!!
Brian, how do you add the description and the color bars like you did?
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post #18196 of 31493 Old 03-31-2015, 02:25 PM
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@Alan , you said to take just subs only measurement and to change LPF of LFE to 250, my only options are 120 down to ? and bypass, is bypass the same as 250? TIA I'm starting to gain a little confidence even though my graphs are terrible. I better go back to the sub crawl correct or move my subs and continue measuring, what do you think?
Cheers Jeff
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post #18197 of 31493 Old 03-31-2015, 02:30 PM
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OK Jeff...not too bad.

The first and last graphs have the correct limit settings almost...the bottom limit should be 55db not 45 and the first graph is from 10-300hz while the last is from 10-200hz. Either 200 or 300hz is fine, just try to stay consistent.

I don't understand why the last graph is labeled "SUBS ONLY Raised sweep lvl 10db" since it is at the exact same level as the first graph, "CH1 + SUBS".

Are these graphs with Audyssey on or off? If Audyssey is off, can we see a sweep with it on? If Audyssey is on for these graphs, well.....
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post #18198 of 31493 Old 03-31-2015, 02:31 PM
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Originally Posted by ahblaza View Post
@Alan , you said to take just subs only measurement and to change LPF of LFE to 250, my only options are 120 down to ? and bypass, is bypass the same as 250? TIA I'm starting to gain a little confidence even though my graphs are terrible. I better go back to the sub crawl correct or move my subs and continue measuring, what do you think?
Cheers Jeff
What AVR do you have again?
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post #18199 of 31493 Old 03-31-2015, 02:32 PM
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What AVR do you have again?
I have an Onkyo 809 and 709
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post #18200 of 31493 Old 03-31-2015, 02:34 PM
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Brian, how do you add the description and the color bars like you did?
He is using the "ALL SPL" tab and putting check marks in the boxes for the measurements he wants to overlay. That is how you can easily compare measurements to one another.
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post #18201 of 31493 Old 03-31-2015, 02:36 PM
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I have an Onkyo 809 and 709
Yup, checked the manual..."Bypass" is where you would want to set the LPF for LFE for this one measurement only, then change it back to 120hz.
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post #18202 of 31493 Old 03-31-2015, 02:55 PM
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He is using the "ALL SPL" tab and putting check marks in the boxes for the measurements he wants to overlay. That is how you can easily compare measurements to one another.
I'm using ALL SPL tab and don't see all the boxes, I just took this measurement of L + Subs and figured out to get lower than 10Hz on measurement

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post #18203 of 31493 Old 03-31-2015, 03:02 PM
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Quote:
Originally Posted by Alan P View Post
OK Jeff...not too bad.

The first and last graphs have the correct limit settings almost...the bottom limit should be 55db not 45 and the first graph is from 10-300hz while the last is from 10-200hz. Either 200 or 300hz is fine, just try to stay consistent.

I don't understand why the last graph is labeled "SUBS ONLY Raised sweep lvl 10db" since it is at the exact same level as the first graph, "CH1 + SUBS".

Are these graphs with Audyssey on or off? If Audyssey is off, can we see a sweep with it on? If Audyssey is on for these graphs, well.....
I believe you are fine with a bottom limit of 45hz- that complies with the measurement standards referenced in AustinJerry's REW Guide. And yes - you probably want to experiment with sub placement to optimize dual sub performance, as well as experiment with the sub distance tweek. That being said, an untreated room will present problems (I know, I have one) and you may come up against the limits of electronic room EQ. Still - you have nothing to lose in pursuit of a flatter response.
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post #18204 of 31493 Old 03-31-2015, 03:03 PM
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^^^

Yeah, you can adjust the sweep start and end points to whatever you like. For sub graphs, I usually do 5hz-300hz and for full range, 5hz-15,000hz.
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post #18205 of 31493 Old 03-31-2015, 03:06 PM
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I'm using ALL SPL tab and don't see all the boxes
Then you must only have one measurement. After you take more (during the same session) they will show up overlayed on each other under the ALL SPL tab.
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post #18206 of 31493 Old 03-31-2015, 03:08 PM
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I believe you are fine with a bottom limit of 45hz- that complies with the measurement standards referenced in AustinJerry's REW Guide. And yes - you probably want to experiment with sub placement to optimize dual sub performance, as well as experiment with the sub distance tweek. That being said, an untreated room will present problems (I know, I have one) and you may come up against the limits of electronic room EQ. Still - you have nothing to lose in pursuit of a flatter response.
If 45db is your noise floor...most folks' are a bit higher.

What's your noise floor Jeff? To find out, run the RTA or REW's SPL meter while your room is totally silent.
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post #18207 of 31493 Old 03-31-2015, 03:15 PM
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Quote:
Originally Posted by Alan P View Post
If 45db is your noise floor...most folks' are a bit higher.

What's your noise floor Jeff? To find out, run the RTA or REW's SPL meter while your room is totally silent.
Noise floor is about 48dB and I have cooling fans running, no Audyssey with any graphs so far. Here is the last one I took with subs only and LPF to bypass.

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post #18208 of 31493 Old 03-31-2015, 03:19 PM
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Since I have only XT I never really use it, maybe I will run a quick sweep with XT and see what my bass looks like, you think?
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post #18209 of 31493 Old 03-31-2015, 03:21 PM
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^^^

Don't really need to see below where you started measuring.

Let's see one with Audyssey now, CC+Subs (Output CH3).
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post #18210 of 31493 Old 03-31-2015, 03:21 PM
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Since I have only XT I never really use it, maybe I will run a quick sweep with XT and see what my bass looks like, you think?
Well, if you never use it then we can try to optimize without it. You're gonna have to start pushing subs around your room.

What don't you like about the sound with Audyssey??
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