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2 Wolfhorn SDX’s as a riser - Page 2

post #31 of 58
Quote:
Originally Posted by FUN4ME View Post

Is the UCA222 considered a USB sound card?

It is indeed.
post #32 of 58
Thread Starter 
Quote:
Originally Posted by BIGmouthinDC View Post

Mr Fun, Let me guess, you are not married, right?

That is dedication to LFE for sure.

Actually I am happily married we just celebrated 5 years earlier this month.
She has let me have what ever I want in "my" room.
Here are a few more picks of the completed room.




That funny spot in the screen isn't really there.
Having my first official movie night tonight with my niece (5 ) and some other friends
I am off to get How to train your dragon. I hear it has some good LFE
post #33 of 58
Can I come over? The finished room looks amazing.

How to Train Your Dragon is the perfect movie to tell you whether you need a highpass or not. Let us know how it works out
post #34 of 58
Thread Starter 
Quote:
Originally Posted by Oklahoma Wolf View Post

Can I come over? The finished room looks amazing.

Yes and Thanks
post #35 of 58
That looks gorgeous man...especially since you have basically hidden them. Truly a work of art
post #36 of 58
Great work on that riser! I love to see integrated bass-makers! You did an awesome job hiding them. Excellent for WAF, even better for scaring the heck out of relatives.

I wonder if those thunderstorm CDs have any deep LF. If so, on Halloween you should totally open the windows and play it; I think it'd sound pretty menacing.
post #37 of 58
Quote:
Originally Posted by aackthpt View Post

even better for scaring the heck out of relatives.

No joke... my two TH's can do 120dB with ease at listening position. That's 14 feet away

Had the SDX horn by itself pushing 124dB at one meter when I found out my highpass was set too low. Then again, I have mine corner loaded (eighth space) for the highest housewrecking potential.
post #38 of 58
I had to stop in and say, great job on the subs/room. Man, sittin' on wolfhorns..........
post #39 of 58
Love the install! How bout some listening impressions?
post #40 of 58
need...test...results...
post #41 of 58
Thread Starter 
Thanks everyone I really like the way the room turned out, that would have been wasted space.

Ok so listening impressions,
I am amazed at what these can do with only 200 watts per channel.
We watched How to train your dragon I sat in the back row and was very impressed.
I had the receiver set to 0db The amp was being driven to clipping (clip lights were barely flashing).
I played the big dragon crash a couple of times and could not hear any bad noises coming from the subs.


Quote:
Originally Posted by Oklahoma Wolf View Post

How to Train Your Dragon is the perfect movie to tell you whether you need a highpass or not. Let us know how it works out

We also watched Transformers Revenge of the fallen over the weekend, set the receiver at -15db and was very pleased with the results, you don't have to listen to a movie loud to get the tactile response that you should only expect to get when it is loud.
I think the subs are a little hot in the front row and will be a little low in the back row when I am done, That is OK with me as I built this more for me than my guests.
I have a smile on my face every time I listen to them.
post #42 of 58
Quote:
Originally Posted by FUN4ME View Post

I played the big dragon crash a couple of times and could not hear any bad noises coming from the subs.

You'll probably be fine then... if that movie couldn't do it, it's not too likely anything else will short of high volume sine waves.

Mine still put a smile on my face, too. There are times when I'll go a couple weeks without any bass heavy movies, and I forget what the subs can do. Then a five star bass movie comes along and whammo... I get up to see if I broke pieces off the room again.

Very glad to see them earning their keep at your place
post #43 of 58
Thread Starter 
Is the Behringer ECM800 mike a better choice for REW than this
http://www.radioshack.com/product/in...ductId=2103667
or would an spl meter be better?
Thanks
Erich
post #44 of 58
Quote:
Originally Posted by FUN4ME View Post

Is the Behringer ECM800 mike a better choice for REW than this
http://www.radioshack.com/product/in...ductId=2103667
or would an spl meter be better?
Thanks
Erich

Ya omnimic is good too...with the behringer I believe you need phantom power which is an additional piece you need to buy.
post #45 of 58
Thanks for the thread. This is very similar to what I am currently designing. I am in talks with lilmike and DB and I think we've decided on 2 horns as risers. My theater room opens to the bar room at the back and the sound system doubles as a music system for the bar/entertaining area.

Can you tell me what effects mouth placements had ? As my riser will be like an island, I can have the mouths spaced apart, pointed sideways, 1 front 1 back, both forward facing etc. Even room response is more important than max spl to me, But it's tough to figure out which way the mouths should be set up without having them, which requires designing them first.

Floorplan:

post #46 of 58
Thread Starter 
Quote:
Originally Posted by jonathanc View Post

Thanks for the thread.

But it's tough to figure out which way the mouths should be set up without having them, which requires designing them first.

Floorplan:


I built mine first and moved them around the room before I settled on a final resting place.
Corner loaded was good but you get A LOT of tactile response the way they are.
I will try to post up some graphs tomorrow.
post #47 of 58
Quote:
Originally Posted by FUN4ME View Post

Corner loaded was good but you get A LOT of tactile response the way they are.

I'll bet, especially if they're unbraced like mine biggrin.gif
post #48 of 58
Thread Starter 
I would recommend getting some way to measure before you do your final install.
Having said that I dont think that I would have changed the way I installed mine.

I think my room sucks, as you can see there is no room gain to be had down low.
Up the stairs is the game room that is bigger than the theater,
through the walkway is the kitchen and family room which are also bigger than the theater.

I know these dont look that good but they are just being EQ by Audyssey

Warning I have no idea how to use REW but here are my results

PC to amp no receiver in the chain


here is after Audyssey on my Onkyo 807 (I think that is the model any way)


I would build another set of these again, they fit my space requirements and with a little EQ the peaks could be dealt with. I have absolutely nothing bad to say about them.
post #49 of 58
That null at 72hz or so is interesting. Normally with an increase in volume the curve should just shift upwards in the graph until you start hitting compression. However with this one, the green line the null area is gaining volume much more than the rest of the curve. Is that distortion ? Or perhaps something to do with dynamic EQ ?

I have an Amp with Audyssey XT32 and I'm curious how well it will do in EQ'ing the sub without a minidsp. I'm holding off on the dsp until I can take room measurements before and after Audyssey.

Edit: in order to post a graph within frequency limits you care about (say 2hz to 120hz in this case) use the limits button on the right side. Makes it easier to read.
Edited by jonathanc - 2/9/13 at 3:54pm
post #50 of 58
I'd say it's probably got something to do with Audyssey, considering there is no such corresponding response dip in the first graph.

In fact, the steep slope of the first graph aside, the measurement looks a lot like my single SDX horn with respect to where the dips and peaks are located. If nothing else, it tells me he built his like I built mine.

The slope is a bit odd in the first graph though. A 30dB increase from 15-120 Hz you couldn't help but audibly notice as the measurement was being made. If you didn't hear it, something's off with regard to REW or the microphone doing the measuring. Maybe wrong cal file? Not sure.
post #51 of 58
Any chance either of you could do a curve with just a single wolfhorn at the main listening position ? Dont need a loud one. 100db or so would do. I'm just curious what the response is like and how low a single digs down.
post #52 of 58
Here you be:



That's with my old eBay special SPL meter. I don't have a lot of room gain myself... below 15Hz my response drops like a rock. This is also done without the B-2 in the chain... it went from the computer through my UCA222 right to the amp, a QSC RMX-1850HD.
post #53 of 58
Quote:
Originally Posted by Oklahoma Wolf View Post

Here you be:



That's with my old eBay special SPL meter. I don't have a lot of room gain myself... below 15Hz my response drops like a rock. This is also done without the B-2 in the chain... it went from the computer through my UCA222 right to the amp, a QSC RMX-1850HD.

Thats a nice looking curve up to 75hz I wonder if running the receivers sub crossover down at 60hz would be beneficial in that situation. Above that the multiple tower speakers would take over and smooth out bass.
post #54 of 58
That 78Hz dip doesn't bother me - it's a null. I've run louder sweeps, and that dip never changes. I've got my horns crossed at 80Hz. The null excepted, both horns together have me within about 3-4dB of being flat from 16-120 Hz. That's why I don't have a MiniDSP.
post #55 of 58
I am thinking about doing this same thing. My room is (or will be -- house is still under construction), a dedicated home theater. The riser will be about 18' x 6' and 13"+/- tall. I am curious about the mouth of the horn. I see any answer to Jonathanc's question, but I, too, am wondering how mouth placement affects performance. My positioning would, presumably be more like Fun's, with the mouth(s) open to the middle of the room. Does the lack of corner loading negatively affect the performance?

I love Oklahoma Wolf's response curve, and I would give up a redundant body part or two to get similar results.

I built quite a few sealed sub boxes in my younger days (just using the recommended volume by the mfr). I can build the boxes without any problem, but I am completely clueless on the design side. I have zero experience with horns. That being said, I like the incorporation of the subs into the riser for aesthetic reasons, and the horn performance seems ideal for my large-ish room (3000+ cu ft). I would like to build something like this, and you all seem like a wealth of knowledge.
post #56 of 58
Thread Starter 
I am not quite sure how to answer your question. If at all possible you should measure your response before you decide on a final position. I didn't have any measuring equipment before I decided on the final location. I think you will get more gain from corner loading. If I stretch my memory I listened to them placed in the corners and where they are now, it seemed like they played lower in the corners but not as much tactile effect, but again I never measured them there. I think my room sucks as for bass, that is why I placed them where they are. They don't have to be loud to get a significant amount of tactile effect.
post #57 of 58
Thread Starter 
QUOTE FROM Butlers PM...
How do you like the sound with your arrangement? Would one enclosure (2 subs) have been enough? I'm considering just doing one enclosure for my room. I might go a little bigger on the amp to compensate. I think you said you're running 200 watts per channel. I could pick a bigger amp, since I'm starting from scratch anyway.


Reply
I like it a lot,yes I think 1 enclosure would have been enough. But I don't want to tell you that 1 will be sufficient. I built 2 because I am kind of OCD and like things to be symmetrical, I didn't want to have to add to my system later, and I originally planned to use my Adcom amp for my mains and add another amp for the subs.

I read your thread and here are my comments for that
If I could do it again I would go with an acoustically transparent screen, don't get me wrong I really like my screen it has a great picture BUT I can really tell that voices are coming from below the screen ( very distracting to me), I have never herd them but a trio of SEOS are on my short list of upgrades in the future.

Good luck I will do my best to answer any questions.
post #58 of 58
One might do, but two is more fun biggrin.gif

That reminds me, I need to update my thread again with recommended highpass settings using a MiniDSP. Hornresp now has the ability to simulate the best curve, and for this design it's 14Hz at 48db/octave.
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