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post #3961 of 3982 Old 01-30-2016, 12:43 AM
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Originally Posted by bgtighe23 View Post
So true. Based on this chart, I'm beating out dual SVS SB Ultras. Which is over 2.5 times the cost. And 18" drivers look so much better than 13.5" drivers

I felt bad when I had to return both of my SVS subs back to SVS and they asked me why...well DIY beat the poop out of them.

Who needs 4K?... just go see your optometrist.
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post #3962 of 3982 Old 01-30-2016, 06:42 AM
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Originally Posted by NODES View Post
I felt bad when I had to return both of my SVS subs back to SVS and they asked me why...well DIY beat the poop out of them.
HA. I sort of did. I was just hoping for a little more sub for the money I was spending.

When I called them to ask for an RA as well, and I was asked why I wasn't satisfied. I told them I decided to go DIY to maximize my price to performance. The person I spoke with attitude never changed throughout the conversation which was nice. We spoke for about another 5 minutes on random sub stuff and seemed to hang up on a good note.

_____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____
HTD Level 3 Review
Receiver : Denon x4100
Speakers : Martin Logan Motion 40s/Motion 15 (center)/HTD Level 2 (surrounds)
Subwoofer : Dual UM-18s
Born in 1995 and still continuing my HT journey

Last edited by bgtighe23; 01-30-2016 at 07:17 AM.
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post #3963 of 3982 Old 01-30-2016, 01:49 PM
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Originally Posted by bgtighe23 View Post
HA. I sort of did. I was just hoping for a little more sub for the money I was spending.

When I called them to ask for an RA as well, and I was asked why I wasn't satisfied. I told them I decided to go DIY to maximize my price to performance. The person I spoke with attitude never changed throughout the conversation which was nice. We spoke for about another 5 minutes on random sub stuff and seemed to hang up on a good note.

Yeah I was satisfied with the SVS, but the guy in me said WHAT IF...I could go louder, researched and DIY popped up

Who needs 4K?... just go see your optometrist.
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post #3964 of 3982 Old 01-30-2016, 02:46 PM
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Yeah I was satisfied with the SVS, but the guy in me said WHAT IF...I could go louder, researched and DIY popped up
I've known about DIY kits before I purchased the SB-2000s, but always doubted myself and figured it would be too difficult and I wouldn't be able to finish it.

Once I fired up the SB-2000s, I said forget it. I'm trying out UM-18s instead. They better be a huge upgrade

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post #3965 of 3982 Old 01-31-2016, 11:09 AM - Thread Starter
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WTH did I just do! I still have to measure but I am going to destroy my house. I just ported all my subs. Still flat to 5hz in room but big peak at 8-10hz, more info coming. It produces 130 dB at 10hz, 130.5 at 12.5, 131 at 16hz and 132 at 20hz from the sims.
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No, I tried porting the fi drivers which did not work as they are pure IB drivers, these are very different. I only gain from 6-25hz and lose below 6hz. I want to try lone survivor and see what happens.
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Well, so what happened?
Wellllll, what's the story?

Can you post the sim against the SI sim?

I'm hopeful to be getting an update to the ULF lists soon. MK, and anyone else that needs an update, please post your new ULF Card.
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post #3966 of 3982 Old 01-31-2016, 07:56 PM
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Well, it is good to see you Dom. I hope all has been well and you have had some time for yourself to have a little fun.
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post #3967 of 3982 Old 02-01-2016, 10:42 AM
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Here is the sim



Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3968 of 3982 Old 02-01-2016, 10:52 AM - Thread Starter
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Originally Posted by MKtheater View Post
Here is the sim


Can you put the si sim in there?
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post #3969 of 3982 Old 02-01-2016, 01:57 PM
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Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3970 of 3982 Old 02-01-2016, 01:58 PM
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How can I make that full size?

Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3971 of 3982 Old 02-02-2016, 06:44 PM - Thread Starter
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So MK, can you tell any difference between your sealed and ported at your typical listening levels?
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post #3972 of 3982 Old 02-02-2016, 06:49 PM - Thread Starter
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Well, it is good to see you Dom. I hope all has been well and you have had some time for yourself to have a little fun.
Thanks DJ!

Been super busy with non-AVS stuff unfortunately...still lurking of course.

I do want to update the spreadsheet and lists, and have some more tests planned to continue to prove out the PVL theory, specifically with ported vs sealed tactile response difference in Post 4 and Post 5.
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post #3973 of 3982 Old 02-02-2016, 08:43 PM
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Hey Dom, the biggest difference is I can play it even louder without tripping any breakers. It feels more violent but the proof will come in spec lab graphs. I was experiencing my IB with Audyssey XT32 and without and I will show the differences on a very low scene, BEQ of my matrix from Tfransformers 2. I actually have more 3-9 hz with Audyssey engaged and more mid bass as well. Without Audyssey I have more 9-20hz and slightly less 3-9 hz and less midbass and it feels stronger. That 9-20hz sure packs a wallop. This ported system boosts that same region and in my small room still flat to 5hz. I would never port to lose under 10hz though. You need to visit again as I now have Atmos going and it sounds awesome! I like this setup much more than the last you heard, by a huge margin.
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post #3974 of 3982 Old 02-02-2016, 08:45 PM
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Oh yeah, I have a friend coming over to take a 3D pic or something after we put up the 24 panels. I have not shown the berries in wall yet.
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post #3975 of 3982 Old Yesterday, 09:16 AM
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Originally Posted by MKtheater View Post
Oh yeah, I have a friend coming over to take a 3D pic or something after we put up the 24 panels. I have not shown the berries in wall yet.
Do you have a build thread or thread that you post your pictures to? I've only read about your setup and seen the short clips of your IB subs.

Congrats on the Atmos, btw.

_____ _____ _____ _____ _____ _____ _____ _____ _____ _____ _____
HTD Level 3 Review
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Speakers : Martin Logan Motion 40s/Motion 15 (center)/HTD Level 2 (surrounds)
Subwoofer : Dual UM-18s
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post #3976 of 3982 Old Yesterday, 11:01 AM
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I post so much I can't even remember. I will post pics in the Behringer thread. I think I started a thread for my SIs so I will dig it up and post pics there too.
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post #3977 of 3982 Old Today, 10:32 AM - Thread Starter
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Originally Posted by MKtheater View Post
Hey Dom, the biggest difference is I can play it even louder without tripping any breakers. It feels more violent but the proof will come in spec lab graphs. I was experiencing my IB with Audyssey XT32 and without and I will show the differences on a very low scene, BEQ of my matrix from Tfransformers 2. I actually have more 3-9 hz with Audyssey engaged and more mid bass as well. Without Audyssey I have more 9-20hz and slightly less 3-9 hz and less midbass and it feels stronger. That 9-20hz sure packs a wallop. This ported system boosts that same region and in my small room still flat to 5hz. I would never port to lose under 10hz though. You need to visit again as I now have Atmos going and it sounds awesome! I like this setup much more than the last you heard, by a huge margin.
Damn....I may have to make that trip! You're right, you literally have a completely different setup since last I went...nearfield, ported, atmos...the whole thing!

So, do you think it's more violent even at the same levels as sealed? Part of my PVL theory is that the port induces more particle velocity near tune, increasing sound intensity, and thus more tactile response.

Oh, and feel free to post pictures of your setup here...this thread needs some life.
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post #3978 of 3982 Old Today, 03:15 PM
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I will, my friend came over to start the panels and we ended up making steel stands for all my speakers so they don't move. They are pretty sweet but I am back top square one! It is more violent and still deep. I have to love my giant enclosures, it lets me do anything and when I get bored I can seal them up again.

Marantz 7702 Atmos
3 Inuke NU4-6000 amps for all speakers.
Speakers- 7 Behringer B215XL's, 4 212xl's for ceiling speakers.
subs- SI 18ht x12 IB powered by Inuke 6000.
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post #3979 of 3982 Old Today, 07:09 PM
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On the PVL theory, the vibsensor thread should show some trending on sealed vs ported once there is enough data. Ports in the nearfiled produce more air at tuning and should result in a greater TR. I recently did a total layout change of the room after adding a projector and have a somewhat nearfield rear array of ported sub. The res to the subs are around the room. Two things resulted: Nice FR and brutal TR.

Every since I joined this thread, it has done nothing but, cost me to spend more money, lol.
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post #3980 of 3982 Old Today, 07:48 PM - Thread Starter
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On the PVL theory, the vibsensor thread should show some trending on sealed vs ported once there is enough data. Ports in the nearfiled produce more air at tuning and should result in a greater TR. I recently did a total layout change of the room after adding a projector and have a somewhat nearfield rear array of ported sub. The res to the subs are around the room. Two things resulted: Nice FR and brutal TR.

Every since I joined this thread, it has done nothing but, cost me to spend more money, lol.
Lol, but look at the ULF masterpiece of an HT room you have!

The only way the vibsensor thread will show prove that is if someone does a direct comparison within their own room. Comparisons across different room introduce to many variables (furniture, floor, sub, etc.) to adequately compare, IMO.

Also, I don't think the air of the port is contributing anything to the shaking...take a blow dryer on high and point it at the back of your couch...it's not going to shake the couch at all.

OTH, perhaps its the frequency of the air that shakes it? IOW, if you took a blow dryer and turned it on and off 15 times per second (15hz), would it shake the couch? I still don't think so...I think it's the additional PVL being produced...

Thoughts?
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post #3981 of 3982 Old Today, 08:44 PM
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I am lost when it comes to that! I just know I have full band, high Spl, and lots of shaking. Too much shaking becomes artificial feeling and when the shaking is accompanied with the pressure and weight I know it is a good thing. I know my room helps me a ton being so sealed and with low ceilings which act like another boundary!
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post #3982 of 3982 Old Today, 09:09 PM
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I have the full and Mini Marty's, the dual box UM 18's, and dual box SI HT. If I remeber the spl number should be fairly similar to around 15 or 16 Hz of one of the dual boxes compared to a Mini Marty. If this is so, I may be able to compare the two. The two subs are not exactly equal but, may be close enough to show a trend. I need to do a little research.
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