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#300226 - 04/04/10 03:10 AM Re: CV's Subterranean Adventure [Re: grunt]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
Good points. What if it's a solid screen and not a fabric? I'm not sure how much distance there would be between the drivers and the screen, but I'm sure I have space to play with.

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#300229 - 04/04/10 03:39 AM Re: CV's Subterranean Adventure [Re: CV]
grunt Offline
connoisseur

Registered: 12/04/06
Posts: 3569
Loc: Nirvana
Really not sure. I imagine with a solid screen as long as it was well anchored you wouldn’t get much movement unless it was very close to the divers but I really don’t know. I’m also not sure how much impact if any a solid screen would have on the higher frequencies your sub would be putting out say around 80Hz. You may loose some mid bass punch with a solid barrier between you and the sub but I don’t think it would have any effect on the deeper bass.

Can you set up a simulation and give it a try to see what happens?
_________________________
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1

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#300232 - 04/04/10 03:57 AM Re: CV's Subterranean Adventure [Re: grunt]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
 Originally Posted By: grunt
Can you set up a simulation and give it a try to see what happens?


It's a possibility. I'll see.

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#300273 - 04/04/10 10:47 AM Re: CV's Subterranean Adventure [Re: CV]
ClubNeon Offline
connoisseur

Registered: 02/06/09
Posts: 3448
Loc: Western Maryland, USA
I'd include the AS-EQ1 in the simulation. That'll give you an objective view of what's actually happening.
_________________________
Pioneer VSX-1018AH-K, PDP-5020FD, DV-79AVi
Axiom M22s, VP150, QS8s
Sony PS3, surround backs
-Chris

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#300303 - 04/04/10 02:39 PM Re: CV's Subterranean Adventure [Re: ClubNeon]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
This is where it would be handy to have a laptop.

Also, I think the Room EQ Wizard software would work better in this case. I only get the graphs for the AS-EQ1 when I go through the entire calibration process. One of these days, I will invest in a good sound card, microphone, laptop, and learn how to use REW.

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#300386 - 04/05/10 12:58 AM Re: CV's Subterranean Adventure [Re: CV]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
Since I don't know, exactly, when I'll be able to set up a simulation, I posed the question to Axiom in case they've already researched the outcome of such positioning. I imagine any performance impact would be minimal. A lot of people don't have their subwoofer drivers facing into the room, including (presumably) all people with downward-firing subs. It's not exactly the same, but then subs are often placed between furniture, so there are usually significant physical barriers in most rooms.

I know, I know. You still want me to do it so I can see what it does in my specific room. Taskmasters, the lot of you!

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#300388 - 04/05/10 01:05 AM Re: CV's Subterranean Adventure [Re: CV]
grunt Offline
connoisseur

Registered: 12/04/06
Posts: 3569
Loc: Nirvana
While your experimenting ever thought of ceiling mounting it above and slightly in front of your seating aimed at you. That might get you some near field midbass punch. The floor would also work but wouldn’t look nearly as cool. ;\)
_________________________
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1

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#300389 - 04/05/10 01:12 AM Re: CV's Subterranean Adventure [Re: grunt]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
Ha ha. I hadn't considered that, no, but you do have me considering Buttkickers.

Hey, I'll have a party once I'm actually able to move my system into the basement, and you're all invited to help me move my subwoofers around and get them situated just right.

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#300390 - 04/05/10 01:18 AM Re: CV's Subterranean Adventure [Re: grunt]
CV Offline
Founder, Axiom Upgrade Club
shareholder in the making

Registered: 07/20/06
Posts: 11208
Loc: Richland, WA, USA
By the way, can you remind me what, precisely, your Buttkicker setup consists of?

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#300392 - 04/05/10 02:26 AM Re: CV's Subterranean Adventure [Re: CV]
grunt Offline
connoisseur

Registered: 12/04/06
Posts: 3569
Loc: Nirvana
I have the Buttkicker LFE Kit.

http://www.thebuttkicker.com/home_theater/products/bk_lfe_kit.htm

However other varieties are available as are other brands. I got a smoking deal on the LFE Kit locally from Fry’s Electronics because the department manager wanted to get rid of it since it wasn’t selling.

I only have the one transducer but up to 4 can be connected to one amp. Also any amp powerful enough can drive it if someone has a spare amp laying around however, other transducers can be easier to drive with an extra amp. The advantage I’ve found with using the dedicated amp are the controls especially the variable high frequency cutoff which allows me to control what frequencies get through to the transducer down to 40Hz. I generally leave it at 40Hz but there are some movies you would think have really low bass but actually don’t so I need to bump it up for those. This filter stops the “voice in butt” syndrome many other brands suffer from because they reproduce a wider range of frequencies. Also minimizes all but the lowest bass in the music from reaching your butt.

IMO one regular transducer is more than enough for several seats if they are connected rigidly in some way. It worked great on my futon in the apartment and now I just have it attached to a 2x4 sitting on the ground with the back legs of my seats sit on top of the 2x4. I was going to build a riser but when I found the seats were high enough not to need one to see over the M80s I figured I’d try out a simple approach and it works great. IMO it actually works better this way than directly attached to the futon. The system is more than powerful enough to shake the 2x4 and attached seats w/o any problems. Plus having it laying along the ground seems to absorb some to the energy so it’s a little less sensitive to changes in power making it easier to get the “volume” right. I also think having it on the 2x4 running along the ground “tightens up” the LFE by dampening any resonating. I have no doubt I could build a riser for two rows of seats and 1 LFE kit would be powerful enough to shake the whole thing as long as it was built rigidly enough.

Some, I imagine most, people turn them up to high especially to demo so people who haven’t had a chance to play with one might thing they are “just to much” or gimmicky, but I can assure you that when calibrated with the system it gives a very “lifelike” feel. Ask Sean how it felt when they were jumping the broken stairs in the Mines of Moria. IMO the Buttkicker enhances scenes like that in a way no subwoofer can w/o over exaggerating the higher bass frequencies.

Stop by and try it out some time. Maybe I can get Sean to do demo and review of it at some point.


Almost forgot. For those who poo poo the extra LFE outputs on some receivers I can say that the extra one makes using a Buttkicker much easier by allowing power adjustments using the receivers remote and separate from the real sub. Before I if I boosted the sub in the receiver it also boosted the Buttkicker which often made it overbearing.

_________________________
3M80 2M22 6QS8 2M2 1EP500 Sony BDP-S590 Panny-7000 Onkyo-3007 Carada-134 Xbox Buttkicker AS-EQ1

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