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***Working Man's DIY Dedicated Home Theater*** - Page 8

post #211 of 604
No manifold?
post #212 of 604
Thread Starter 
Quote:
Originally Posted by tbraden32 View Post

IB!

Some little birdies are watching!

Thanks man, no angry birds though right!?

Quote:
Originally Posted by SerenaFate View Post

Niiice

Is that a 21" Maelstrom-X?

You sir have a keen eye and yes its one of those vegas subs DIYcable sold out when cleaning out. They are absolute beasts and unfortunately they were before my time. I cannot even fathom what 4-8 of these in sealed config with adequate power would do to your body.......

Quote:
Originally Posted by jdanforth View Post

Holy ka-moly! NICE! IB into your attic? Clever!

I've been sitting on this thing and kinda plotting how to work it into the setup. Ultimately a boring sunday morning won out and a couple hours later I had it framed into an existing attic access panel and hooked up to an extra channel on one of my amps.

Quote:
Originally Posted by RTROSE View Post

Wow,

That should work fantastic! Awesome. Should really rock your space for sure.

Looking forward to hearing what your impressions are.

Regards,

RTROSE

Yes, Its quite impressive. Especially down low which is where I wanted it to work. The infrasonic has been substantially augmented. Several demo scenes today with my brother we got some serious kidney punches and I LIKE IT!!!!!

Total now 6 sealed MFW15s and 1 IB Mael X 21. Two more MFWs are due this week or next and I hope to finish up my sub adventure with 8 MFWs and the Mael X filling in the uber lows. Sounds pretty powerful, still havent run audyssey or done any EQ so there is A LOT more to be had from this addition.


BADDABOOM.
post #213 of 604
Quote:
Originally Posted by NicksHitachi View Post

You sir have a keen eye and yes its one of those vegas subs DIYcable sold out when cleaning out. They are absolute beasts and unfortunately they were before my time. I cannot even fathom what 4-8 of these in sealed config with adequate power would do to your body.......

Ha, knew it The shape of the basket in combination with that motor is rather unique. Wasn't sure from the pictures at first whether 18" or 21", but then remembered that the 18"ers had a wrap around rubber seal. That monster should perform magnificently.
I was considering Maelstroms when I ordered speakers for my IB (two years ago ... still building it *sigh*), but then went with Fi, because they have (had?) a distributor in Europe.

Is your structure strong enough to prevent rattles?

P.S.: I ain't no sir though, sir
post #214 of 604
Thread Starter 
Quote:
Originally Posted by tbraden32 View Post

No manifold?

Nope i only have one so manifold benefits are null and void......
post #215 of 604
Thread Starter 
Quote:
Originally Posted by SerenaFate View Post

Ha, knew it The shape of the basket in combination with that motor is rather unique. Wasn't sure from the pictures at first whether 18" or 21", but then remembered that the 18"ers had a wrap around rubber seal. That monster should perform magnificently.
I was considering Maelstroms when I ordered speakers for my IB (two years ago ... still building it *sigh*), but then went with Fi, because they have (had?) a distributor in Europe.

Is your structure strong enough to prevent rattles?

P.S.: I ain't no sir though, sir

Yeah they're pretty hard to hide, if you ever consider hiding a 21" woofer that weighs 53lbs......

As far as the bracing: Behind the baffle the studs framing the opening are tripled and braced back down to the ceiling joists of the first floor. I can detect tiny bit of vibrations in the wall when the levels are really high but realistically the whole rooms breathing at those levels so I really can't expect that wall to be any different. The only way to get there would be turn back time to construction of my house and do more isolation/decoupling.........

I've always been fascinated with the IB Idea. If this current setup don't workout, FI is really the only good option nowa days for a good 4-8 18" IB setup.......IMO.
post #216 of 604
Nick,

Did you ever make any changes to your rack ventilation issue? Or is it still venting into the attic? I have the same type of room above my garage, and that is my main concern, heat coming from the rack and PJ since in the summer it is always hot up there to begin with.
post #217 of 604
Thread Starter 
Quote:
Originally Posted by tbraden32 View Post

Nick,

Did you ever make any changes to your rack ventilation issue? Or is it still venting into the attic? I have the same type of room above my garage, and that is my main concern, heat coming from the rack and PJ since in the summer it is always hot up there to begin with.

Hi Tbraden,

I have not changed anything with the rack ventilation. It currently pulls air in bottom of rack up and back out into room. Eventually I want to use a ventilator and exchange the heat to another room in the house.

I did find a couple things which have made an enormous improvement.

My HVAC return manifold had a seam with a loose tape seam, fixed that.

Also, my thermostat has a setting for the air handler to "circulate" or run the air handler periodically even when the pump is off which keeps the air more homogenous throughout house. Turned this setting on.

Another thermostat settting determines how long air handler runs after pump turns off. i increased this setting so air handler runs longer.

Temps are now tolerable but like i said the best solution would be exchange to somewhere downstairs.
post #218 of 604
Quote:
Originally Posted by NicksHitachi View Post

Total now 6 sealed MFW15s and 1 IB Mael X 21. Two more MFWs are due this week or next and I hope to finish up my sub adventure with 8 MFWs and the Mael X filling in the uber lows. Sounds pretty powerful, still havent run audyssey or done any EQ so there is A LOT more to be had from this addition.

BADDABOOM.

Sounds like some serious bass.
post #219 of 604
Thread Starter 
Quote:
Originally Posted by stockmonkey2000 View Post

Sounds like some serious bass.


Its getting There!

I spent the afternoon re-running Audyssey and applying EQ to the subs. I still need to set the gain structure but overall so far very pleased with the new addition.


LL
post #220 of 604
Thread Starter 
Geez! All that writing covered up my pretty flat graph

Here we go:


LL
post #221 of 604
That graph would suggest that this incredible collection of Subs, is:

Pushing +16db (above your 73db reference) of pressure all the way down to 10Hz ???
If the graph is accurate down low, then this is most impressive!!
post #222 of 604
Thread Starter 
Quote:
Originally Posted by cuzed2 View Post

That graph would suggest that this incredible collection of Subs, is:

Pushing +16db (above your 73db reference) of pressure all the way down to 10Hz ???
If the graph is accurate down low, then this is most impressive!!

Hi Cuz,

My calibration setup is accurate to 10Hz and yes the subs are waaaaay hot. As I mentioned before I have to set gain structure so they will likely be turned down. This is why I didn't show the rest of the graph.....

It is flat to ten with exception being the bump below 20 which I believe has something to do with the (Fs) of all the drivers being centered right at that frequency. It could also be a room anomaly though. The BFD does not easily work below 20 and I didn't have enough time to get real creative with overlaying filters to try to tame that bump below 20. Its some task to overlay them and make sure your not doing something crazy stupid and accidently netting like 10db boost somewhere under the overlay.... Realistically I'll probably leave that little bump alone.

I'll post a full spectrum after I get the gain structure set. It will still likely show at least a 6db house curve. This is fine as my mains really run out of steam at about 111db(calculated) and pushing them beyond that just doesn't sound good.

I really want a MiniDSP, especially now I have more subs than the BFD can effectively manage.
post #223 of 604
Nick,

Sounds good! Curious how much room volume are you pressurizing with these subs?
(regardless it's one hell of a result)
Would love to hear something like WOTW in your space!
post #224 of 604
I think Nick is going after that elusive "brown note". I'm with you cuzed that is really impressive and I don't even know how to read those charts yet!

Regards,

RTROSE
post #225 of 604
Thread Starter 
Quote:
Originally Posted by cuzed2 View Post

Nick,

Sounds good! Curious how much room volume are you pressurizing with these subs?
(regardless it's one hell of a result)
Would love to hear something like WOTW in your space!

I havent watched it since i added the mael but it was pretty cool before!

The mael should displace more air than 2 of the mfws so.......

The volume of my space is approx 2300 cubic feet.

Bad news in the homefront though my drivers came in yesterday UPS and BOTH WERE DESTROYED!!!! The seller said they were fine when he shipped them.

Thats the voice coil!!!!!
LL
post #226 of 604
Thread Starter 
Quote:
Originally Posted by RTROSE View Post

I think Nick is going after that elusive "brown note". I'm with you cuzed that is really impressive and I don't even know how to read those charts yet!

Regards,

RTROSE

IF i ever find it, ill never tell!

Pretty much a flat straight line is good, maybe tailing upwards a tad as you go to the left, depending on taste.......

Me, i have a taste for BASS!
post #227 of 604
Quote:
Originally Posted by NicksHitachi View Post


The mael should displace more air than 2 of the mfws so.......

The volume of my space is approx 2300 cubic feet.


The mael displaces more air than 4.5 of the MFW's. The Maelstrom has 9.92L of displacement vs the MFW at 2.141L. So with 2 less MFW's you are looking at roughly 23 Liters vs 27. I think you are going to be ok
post #228 of 604
Thread Starter 
Quote:
Originally Posted by stockmonkey2000 View Post

The mael displaces more air than 4.5 of the MFW's. The Maelstrom has 9.92L of displacement vs the MFW at 2.141L. So with 2 less MFW's you are looking at roughly 23 Liters vs 27. I think you are going to be ok


^^He's right.

SM2K your thread is really nice. Very nice and all DIY. Subscribed mate.
post #229 of 604
Thread Starter 
I finished dialing in the subs last night and did some listening. The headroom improvement is quite astonishing.... I actually believe I'm getting close to "enough bass" which is somewhere I never thought I would arrive.

The plan is still to go with the 8MFWs and see how long the Mael will hold together. If it craps out I'll use it passive as a resonator in the wall.

Maybe this weekend I'll shoot some pics of the MaelX under some high excursion, it is quite unreal to see that much woof with that much travel.....

I do like the IB sound though, and If I were to re-do my sub setup I think it would be an IB setup. Easy to power and lots of displacement/extension, best of both worlds IMO.
post #230 of 604
I do not know much about IB setups and my first exposure to the type was at KNKKNK's theater a couple of weekends ago. His IB setup 4 18" drivers (sorry don't know the watts or the manufacturer) is nothing short of impressive. It definitely turns the LFE into an experience. If I could go that way with v 2.0 I certainly would or if I would ever move and build another theater I would design an IB setup from the getgo.

Sounds as though you are very close to reaching personal bass nirvana!

Regards,

RTROSE
post #231 of 604
Thread Starter 
Onkyo 3007 bit the dust.....

Hopefully I can get onkyo to fix it!

Until then i'll have to limp along with my Pioneer elite Vsx-03txh, and ONLY 7 Channels with no Audyssey! Blasphemy!
post #232 of 604
Quote:
Originally Posted by NicksHitachi View Post

Onkyo 3007 bit the dust.....

Hopefully I can get onkyo to fix it!

Until then i'll have to limp along with my Pioneer elite Vsx-03txh, and ONLY 7 Channels with no Audyssey! Blasphemy!

Oh no! Condolences, man.
post #233 of 604
Quote:
Originally Posted by NicksHitachi View Post

Onkyo 3007 bit the dust.....

Hopefully I can get onkyo to fix it!

Until then i'll have to limp along with my Pioneer elite Vsx-03txh, and ONLY 7 Channels with no Audyssey! Blasphemy!

That unit not even that old either...ouch!
post #234 of 604
Thread Starter 
Well heres the skinny, i bought second hand an orig owner provided receipt. Hopefully onkyo wont give me trouble about our names being different.......

No its not that old just over two years to be exact...... Considering it was one step below their flagship, I expected better quality.

Many owners have had the same problem im having with no audio, apparently they had problems with the HDMI board.

Im gonna switch it out tomorrow which should be lots of fun since the Pioneer is much less sophisticated in the bass management department especially. Guess I get to polish my sub EQ skills!!!!
post #235 of 604
That really stinks dude. I feel for ya. I sure hope Onkyo comes through for you. I was in the Denon, Onkyo, and Yamaha owners threads quite a bit so I am well aware of some of the issues Onkyo owners were having with their units.

Good luck I sure hope everything works out for you.

Regards,

RTROSE
post #236 of 604
Have you at least got any resolution on your sub drivers?
post #237 of 604
Thread Starter 
Quote:
Originally Posted by jdanforth View Post

Have you at least got any resolution on your sub drivers?

MCCAC does some stuff for the subs like standing wave control but i dont think it does anything as far as EQ.....

I do have outboard eq fir the subs though ill get it flat enough to get by in the meantime.
post #238 of 604
Quote:
Originally Posted by NicksHitachi View Post

MCCAC does some stuff for the subs like standing wave control but i dont think it does anything as far as EQ.....

I do have outboard eq fir the subs though ill get it flat enough to get by in the meantime.

No, I meant the ones that came arrived broken.
post #239 of 604
Thread Starter 
Oh sorry yeah the buyer was really good about it, gave money back immediately.

Ups came and got them or warranty claim.
post #240 of 604
Quote:
Originally Posted by NicksHitachi View Post

Oh sorry yeah the buyer was really good about it, gave money back immediately.

Ups came and got them or warranty claim.

Wow! An honest seller? You're lucky!
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