Cof, basement sub pic question

[frostbyte]

I saw the pic you posted with the ?12? subs suspended from the ceiling of a pantry room. Did you actually hear that set up? I would think that a lot of the sound would be lost in the basement room. Maybe that''s why they put 12 subs. <BR><BR>That brings up another question I have. In the room designs where they put the speakers in a cabinet, is there any sound loss vs putting it in the openat 1/5th of the room? If so how much? I read that the optimal placement for subs generically is 1/8th of the rooms distance away from the wall and the mid/tweet is 1/3 or 1/5 the distance. Thoughts. I can do either as it is a dedicated room I am doing so I want it as good as it can be within a budget.

[Phatbass]

<a href='http://home.comcast.net/~ttriff/page2IB-Gallery.html' target='_blank'>Cult of the infinitely baffled</a><BR><BR>Is this what you are refering to? YOu could use 1 or 2 subs and I am sure it would be fine, if the woofers are fairly efficient and the room isn't huge. I am sure COF can give you some way better answers here to evrything else.

[crazyoldfart]

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<DIV>I have found that box subs usually sound best with placed deep into a single corner with long walls on each side. In fact, I have only heard a couple of rooms where the sub sounded better placed away from the corner. </DIV><BR>
<DIV>&nbsp;</DIV><BR>
<DIV>With IB (Infinite Baffle), the power handling of each sub is acutally about 1/2 the rated RMS power handling and the efficiency is a tad lower. This is why you need several larger subs for IB systems with a high power amp (pro amps work great for this) and a parametric&nbsp;EQ to smooth out the response. IB systems can be the most dynamic and flat of anything out there, but they are more work and very permament. </DIV>

Thanks. THat's what I was looking for. I like the idea, but I was wondering how it would sound in comparison. For the regular Joe it's probably a better bet to stick with a box in a corner (or cylinder for you SVS guys). I have a small 8' x 10' room beside the HT and was thinking about it. I want a smooth tight controlled bass and I'm thinking the 4 10" RBH will do more than fine, but I haven't got everything together yet to test them out.<BR>Those are some pretty crazy installs on that link. Maybe someday I'll experiment with one. I also have the space under the stairs to possibly use for something like this although I may put my equipment under it to hide it away. Thanks again.

[crazyoldfart]

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<DIV>I've done about a dozen installs of IB Subwoofers, including two for myself in houses I no longer live in. In every single case, the results were absolutely incredible. I have never once heard a box sub that sounded as natural, deep, home rattling, and low distortion as any of the IB installations I have done. The trick is solid construction, a decent parametric EQ (I like the Behringer Shark) and a&nbsp;high output&nbsp;amplifier (You can get 500 watt pro amps for $600 now days). </DIV><BR>
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<DIV>I plan on installing an IB sub in my current HT in the next year or so. </DIV>

[frostbyte]

The home rattling is the part that worries me. I like a lot of thundrous bass, but I don't want to hear anything shaking. No posters on the walls, no trinkets to rattle. I would think it would be hard to rattle proof a whole house. Wouldn't you loose a lot of bass into the room or space that was the infinite baffle part?

[crazyoldfart]

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<DIV>You don't lose anything to the back wave, it is the same as a sealed cabinet or the range of a vented cabinet outside of the tuning frequency. </DIV><BR>
<DIV>&nbsp;</DIV><BR>
<DIV>However, there is&nbsp;no acoustic&nbsp;compliance on the driver that you get with all enclosure based sub drivers, so the cone is free to flop around as it wants. The requires a different driver design that has more control over the motion of the driver. </DIV><BR>
<DIV>&nbsp;</DIV><BR>
<DIV>As for the whole house vibrating, it isn't as bad as they make it out to be unless you turn it up really loud. A good sub (like my Sunfire) will vibrate the house at high levels if it is cabinet based or IB based. </DIV>

[randy]

About how much is the Behringer Shark?<BR><BR>randy

[crazyoldfart]

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<DIV>About $70 USD</DIV><BR>
<DIV><A href="http://www.zzounds.com/item--BEHDSP110">http://www.zzounds.com/item--BEHDSP110</A></DIV>