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Does anyone here own this sub, or have heard it, or can tell me more information than this:The Bag End INFRASUB-18 is a self powered subwoofer system employing a direct radiating 18" cone loudspeaker in a sealed enclosure and a 400 Watt power amplifier mounted to an aluminum plate on the back of the enclosure. The amplifier also includes a built in ELF(tm) dual integrator providing a flat acoustical response down to 8 Hertz, well below the audible range of human hearing.
The Bag End subs use high resonance drivers in a small cabinet and try to drive the *hit out of them with LARGE amounts of EQ. The problem is that their Integrator has a built in limiter so that excursion is restricted to what the driver can handle. As the other threads have said, the response comes at the expense of SPL. BTW, their 18" driver is nothing more than an Eminence Pro Sound driver. I know because I've been to the factory (Bag Ends'). When I was there I played the 1812 Overture on them. They couldn't handle the cannons even at reasonable listening levels. Look elsewhere. My new favorite drivers are from Lamda Acoustics.Mike
I suggest you read the reviews of this speaker in Audio magazine a couple of years ago and in http://www.hometheaterhifi.com/masterindex_toc_main.html. I wasn't impressed with the reported performance of this sub in comparison with similarly priced options that you can read about in the reviews. Be careful to try to read between the lines of reviews to see what isn't being said.
Yeah, flat to 8Hz, at an output level of what---85dB? That's the problem---you need to know the sub's output level at a given frequency, not just how flat the "curve" is. Remember, THX specs call for 120dB at the listening position.
The little voices told me to stay at home and clean the guns today.
Two words for this sub:MARKETING HYPE
I've listened to this box, and quite honestly wasn't very impressed. I also gathered some data from Wide Screen Review:
20hz - 90db
25hz - 102db
30hz - 106db
35hz - 108db
40hz - 108dbThese numbers are for maximum output. As you can see, it isn't even flat down to 25hz. I went with the Velodyne HGS-18. If you are looking for a sub that can kick out loud and deep bass, this is the best box I've seen. It can easily overpower a room if not integrated properly, and IMO not the greatest sounding for the 60hz and above range. It works well if intended for movies only, with something smaller and quicker used for music. In my case, I'm getting a pair of Vandersteen 2Qw subs, as each one has (3) 8" subs and a very different crossover/sampling design, a VERY good design for music. These two types of systems together should prove to be quite potent.
Brian
My first DIY sub does this:20hz: 107.5
25hz: 110
32Hz: 121
40hz: 123.5
50Hz: 122.5
63Hz: 122.5
And I only spent under 600bones in building it. Right now I am in the process of doing another sub since I don't like the rolloff.
What sub is this u say u built it..??? can u give me more information.??
Sure..It's a dual Shiva based on a Sonotube..
Here's my site.. I need to update it soon!
www.gremlan.org/~lgebhart
Oops.. forgot to list test conditions:2m away from sub..max spl taken at 10%THD in room ala Tom Nousiane's methods
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