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Fi IB3-18 x 8 and SEOS pure 10 kits! - Page 18

post #511 of 1021
Thread Starter 
Quote:
Originally Posted by audiovideoholic View Post

Looks great down low but what about 50ish and up? Can you hear the drop off? That was my worry with my never to be built mega 16 18"ib with horns for 30-40ish and up. The graph is impressive as far as 3-45hz and smoothness though. Are you going to eq the top and see what happens? And how well do the LCRs do as far as crossing them to the ib? Where do they start dying out at high spls?

Edit. So this graph isn't of the final subs and setup but rather equipment?

That is a graph of my AVR lfe out. What is funny is that I rolloff on the top end of the subs and the bottom end of the speakers which intersect at about 120hz. I thought this might be a bad mix without a MBM but then I measured the THD at reference and it was less than 1% so even though not ruler flat they play reference and very clean.
post #512 of 1021
Quote:
Originally Posted by MKtheater View Post

That is a graph of my AVR lfe out. What is funny is that I rolloff on the top end of the subs and the bottom end of the speakers which intersect at about 120hz. I thought this might be a bad mix without a MBM but then I measured the THD at reference and it was less than 1% so even though not ruler flat they play reference and very clean.

Lol getting close to seeing how will all come together and is promising then. I'm still kicking by bum for not DIY my LCR or sourcing out something larger than the cats (at the time where prolly best suited for me over jtr triple 12).
post #513 of 1021
Quote:
Originally Posted by MKtheater View Post

Here is a sweep of my LFE out from the sherbourn SR 8100



This graph is not correct. Even my piece of sh*t HTIB receiver from back in the day had a ruler flat FR. Red is subwoofer output loopback

post #514 of 1021
Thread Starter 
How do I measure my amps response now? This will leave my mic as the culprit and sound card. The AVR is flat at 5hz with a -3 dBs point of about 3.5 hz.
post #515 of 1021
Thread Starter 
Tell me what I did wrong and your graph went to 15hz only. Emotiva products are known to mess with bass, they did on the UMC-1. It could be my sound card too. If my response was ruler flat then the -3 dBs point would be closer to 3hz rather than 3.5. I all wanted to see was where it rolled off.
post #516 of 1021
Sorry dude, my opinion is that you have a couple issues but the only one I can talk to is that your soundcard is absolutely no good...tongue.gif

Lol, sorry your LFE electronics should be ruler flat in the pass band and only perhaps excluding the ULF. It is not that hard to engineer and I think even super budget stuff will do 20 Hz. But certainly above that it will be ruler flat like a WinISD sim until the LPF. Not a gradual 5 dB decrease from 10 Hz to 70 Hz. You mention Emotiva might be implementing EQ? Can you turn it off?

I'm not sure what is going on but I think a total re-hashing of the system may be in order, starting from the basics. Plus a better soundcard if you want ULF. Here is a loopback from my Revo 7.1 from when I made the sub channel measurements. I'm pretty sure most modern soundcards can achieve this. (or maybe close)

Sorry, I know it can be frustrating to figure out what is happening to screw with measurements. GL

post #517 of 1021
I agree with SXRDork that there's no way your LFE out measurement is right. Maybe it's time to quit trying to measure and remeasure with sound card / mic that are suspect?

I don't understand why you keep messing around with that junk (which is obviously not measuring accurately) after spending thousands on new subs. As others have recommended, save yourself the time and hassle and buy new measurement gear for $100ish; you'll have it next week.

Also, surely you have a laptop with HDMI-out you can use for measurements, right? Just about every laptop made in the last 4 years has HDMI out.
post #518 of 1021
Thread Starter 
Quote:
Originally Posted by nube View Post

I agree with SXRDork that there's no way your LFE out measurement is right. Maybe it's time to quit trying to measure and remeasure with sound card / mic that are suspect?

I don't understand why you keep messing around with that junk (which is obviously not measuring accurately) after spending thousands on new subs. As others have recommended, save yourself the time and hassle and buy new measurement gear for $100ish; you'll have it next week.

Also, surely you have a laptop with HDMI-out you can use for measurements, right? Just about every laptop made in the last 4 years has HDMI out.

Thanks guys, trust me, I am not arguing, I am asking for help. A couple of posts above will tell you I am thinking of using a new sound card or USB mic that will plug right into my HDMI all in one touch computer. It is big but not hard to bring home, like a 23 inch LCD with built in bluray player. I will just order that calibrated Dayton mic from cross spectrum and until then enjoy some movies and build the SEOS. If the measurements come out the same I will hunt you guys down! biggrin.gif

One more thing, I did splice together some wires and made the cables to perform a loopback, could the wires cause some problems?
post #519 of 1021
Quote:
Originally Posted by MKtheater View Post

Here is a sweep of my LFE out from the sherbourn SR 8100



MK, is there any EQ or night mode or similar that could have been enabled in the Sherbourn? That's an odd response. The low end doesn't look too bad actually if that's correct.

Maybe try the same sweep with the Left channel pre-out? The majority of the response should be flat, with subtle roll-off on either end.

Edit: This includes the soundcard correction, right?

If so, it's correcting too much on the low end causing the strange rising response. I think we now have our indication that the current measurement rig as just not going to cut it- time to go digital.
post #520 of 1021
Thread Starter 
Quote:
Originally Posted by nfraso View Post

MK, is there any EQ or night mode or similar that could have been enabled in the Sherbourn? That's an odd response. The low end doesn't look too bad actually if that's correct.

Maybe try the same sweep with the Left channel pre-out? The majority of the response should be flat, with subtle roll-off on either end.

Edit: This includes the soundcard correction, right?

If so, it's correcting too much on the low end causing the strange rising response. I think we now have our indication that the current measurement rig as just not going to cut it- time to go digital.

Yes, that is with the sound card calibration. There are options to the EQ and two are Auto EQ(room correction) and flat. I don't see an option for none so I am assuming flat is no EQ. It could be though so who knows. I am thinking of just buying that USB mic and plug right into the computer. Then connect the computer to the AVR via HDMI. That should at least get rid of several problems I am having. You guys tell me that is better and worth it I will order now!
post #521 of 1021
I think that's where we're at now, yes. The soundcard correction is obviously not accurate as it's affecting what should otherwise be ruler flat.
post #522 of 1021
Thread Starter 
Quote:
Originally Posted by nfraso View Post

I think that's where we're at now, yes. The soundcard correction is obviously not accurate as it's affecting what should otherwise be ruler flat.

OK, done! Ordering now. I just need a long USB cable or connector now.
post #523 of 1021
Thread Starter 
Done, I just bought the Mic.
post #524 of 1021
Thread Starter 
BTW, the 3 SEOS fusion 10's will be done on Sunday.

Any other suggestions for a long USB cable for the new mic? My AVR is in a different room from my theater. I could just use a long HDMI cable and put my computer in the theater so the mic can connect within 3 feet and run the HDMI to the AVR in the other room. I won't have to buy any cables then.
post #525 of 1021
long Redmere HDMI cable from monoprice; they are directional but can go very long distances without loss due to chip design
post #526 of 1021
Thread Starter 
I already have 3 of those but the long one goes from projector to AVR. I have a 20 foot HDMI from them but one of the originals, it will be fine for my usage.
post #527 of 1021
Quote:
Originally Posted by MKtheater View Post

BTW, the 3 SEOS fusion 10's will be done on Sunday.

Any other suggestions for a long USB cable for the new mic? My AVR is in a different room from my theater. I could just use a long HDMI cable and put my computer in the theater so the mic can connect within 3 feet and run the HDMI to the AVR in the other room. I won't have to buy any cables then.

You putting the crossovers for the SEOS's together yourself or did they come assemlbed?
post #528 of 1021
Thread Starter 
Quote:
Originally Posted by Reddig View Post

You putting the crossovers for the SEOS's together yourself or did they come assemlbed?

I bought them assembled.
post #529 of 1021
Quote:
Originally Posted by MKtheater View Post

I bought them assembled.

Cool. Thats what id have to do. I get so confused looking at a crossover diagram and I havn't soldered in years.
post #530 of 1021
Thread Starter 
With all my different systems and tweaking I do little of the work, my friends do most of it and I take care of them with money, food, adjustments, you name it. I provide the entertainment when finished. I of course do all the planning, wiring, setup, EQ, etc...
post #531 of 1021
Quote:
Originally Posted by MKtheater View Post

With all my different systems and tweaking I do little of the work, my friends do most of it and I take care of them with money, food, adjustments, you name it. I provide the entertainment when finished. I of course do all the planning, wiring, setup, EQ, etc...

Lol! I'm in a similar situation right now finishing building the ... well you know. Got my left arm in a sling for a bit. frown.gif Fractured elbow. Anyway. I provide the pizza, my friend does the lifting. biggrin.gif
post #532 of 1021
Thread Starter 
I almost do anything for a good pie! I love pizza and wings!
post #533 of 1021
Quote:
Originally Posted by MKtheater View Post

With all my different systems and tweaking I do little of the work, my friends do most of it and I take care of them with money, food, adjustments, you name it. I provide the entertainment when finished. I of course do all the planning, wiring, setup, EQ, etc...
Nice man that's what I'm talkin bout!
post #534 of 1021
Quote:
Originally Posted by Scott Simonian View Post

Lol! I'm in a similar situation right now finishing building the ... well you know. Got my left arm in a sling for a bit. frown.gif Fractured elbow. Anyway. I provide the pizza, my friend does the lifting. biggrin.gif

I'm in a similar situation. I use to race motocross and when I was 23 I got both my ankles totally obliterated landing short on a 80ft jump. A dozen surgeries later I'm left with two fused ankles and herniated discs in back. I'm actually legally disabled cause of it. So I'm always coaxing my buds to do the heavy lifting and as MK said I supply the entertainment and pizza and brewskis.
post #535 of 1021
Holy crap, man! eek.gif That's one hell of a way to get a hell of an injury. At least you have a cool story. I just tripped on my own feet. tongue.gif

Maaannn.... I can only imagine an inkling of what kind of pain you went through. Holy crap.
post #536 of 1021
LOL, Ya I tell ya what it was hell. I smashed them up so bad that the doctors almost had to amputate them cause of so much tramua. I didn't walk again until I was 26. I learned alot from it like patience. It was actually what got me into Home Theater. I was a car audio guy doing the SPL thing at competitions but after I got laid up I naturally evolved to to HT being a lover of movies and all things audio. Especially after I bought my first house and got permition from the wife to dedicate a room downstairs and built a home cinema and not just a flat panel and HTIB like I started out with years ago. Became kind of a videophile too but audio is my favorite subject.

MK looking foward to hearing about the SEOS's.
post #537 of 1021
Thread Starter 
Part of the reason I don't do much of the work was due to my double knee replacements. I just can't bend anymore and can't crawl around or lift heavy. It really sucks and I am partially disabled. Of course I can't take labels like that so I work 50 hours a week. Sometimes it takes its toll but I will never rollover!
post #538 of 1021
Quote:
Originally Posted by MKtheater View Post

Part of the reason I don't do much of the work was due to my double knee replacements. I just can't bend anymore and can't crawl around or lift heavy. It really sucks and I am partially disabled. Of course I can't take labels like that so I work 50 hours a week. Sometimes it takes its toll but I will never rollover!
Aww yes. My dad had that done. He's very limited as well.
post #539 of 1021
Thread Starter 
I am 42. I had it done young(40)! I play tennis and golf. I can still beat Division 3 college tennis players. Not bad for a limited in movement football player. Watched MOS last night, great flick! The sound was superb but the bass was a little better than the Avengers.
post #540 of 1021
Quote:
Originally Posted by MKtheater View Post

I am 42. I had it done young(40)! I play tennis and golf. I can still beat Division 3 college tennis players. Not bad for a limited in movement football player. Watched MOS last night, great flick! The sound was superb but the bass was a little better than the Avengers.

That's good to hear. My dad was a state track pole vaulter and also played basketball in high school so he's very competitive. Any reduction in his ability devastates him. The knee doesn't limit him as much as his neck as he broke it in an car accident. He still works as an oil field worker so he's not as limited as i let on he just isn't quite the same. Can't jump much etc.

I really enjoyed MOS too. Watched it twice now. As you said bass is only limitation. Great audio just filtered holds it back from being an all world audio flick. Such a great film tho damn it was good. Like you said gravity gun thing was just dieing to have a ULF blast.
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