Hows it going? I don't think you are being overly paranoid about the motor structure... if you have wide enough stud spacing I think placing the motor structure inside the manifolds would be a fine idea, I think it looks pretty cool too. If you can't I would not be too worried about it, these drivers seem pretty tough and when they get to doing their thing dust just flies off anyways, lol. Garage door has not been problematic for me, the only thing that it does is vibrate a bit but you can't hear it in the theater room and the bit of sound leakage just adds to the "infinite" in the baffle, lol. About a quarter of the way down the driveway the Its not very offensive anymore... even with the garage up. Once I tracked down the rattles in the house the overall offensiveness is surprisingly not too bad either. Crazy me is thinking about expanding it with 4 more 18s have not decided yet though.Hey, great project. Thanks for posting your experience, because I am considering a similar project (IB using the garage).
I am concerned with the motors facing the garage though & plan to place the motors inside the manifold to avoid dirt/dust fouling as well as random things affixing themselves to the magnets.
Does the garage represent issues...i.e. sound leakage into the neighborhood? Seems the garage door would provide little sound suppression.
Do you think I'm being overly paranoid?!?!
Good gravy, a total of (8)! I was thinking about just (2) 18IB3's (on an older EP2500), which would be good for something like 121dB! You mentioned that you've not been above -6 from reference. Are (4) running out of steam at that point?!?!Crazy me is thinking about expanding it with 4 more 18s have not decided yet though.
The response starts to naturally roll off a bit after 80hz so I do set the low pass to match. The other lfe comes from my mains which are JTR triple 12s, I high pass them at 60hz so I get some overlap in that area.From the graphs it looks like you have your lowpass set at 80Hz? How do you get the rest of the LFE?
Any concerns with chest compressing bass? Is it still there after you got rid of your box subs?
I am planning a 4 IB318 build but I am a bit concerned about upper bass performance, since the FIs will be the only thing reproducing the LFE information.
I think the redirected bass is part of the LFE signal. If the speakers can handle those frequencies at proper volumes then all should be fine.... there shouldn't be an audio/frequency hole.No, I love my infrasonics! I also love midbass, but my mains handle that bit. What I am concerned with is the fact that I will lose LFE information if I need to set crossover at 80Hz. Now, if it's only a natural rolloff and no nasty breakup noises I can live with it. As far as I know I have no way to let the mains handle LFE above 80Hz. Note I'm talking about the LFE channel, not redirected bass.
Also, I don't know if I'm making a storm in a glass of water here, there may not be much useful information above 80Hz in the LFE anyway.
Yes it does. But it's been confirmed it discards anything above the lowpass setting, it will not redirect to the mains. So to get the entire LFE channel you need to have that set to 120Hz.I see I see! Does your processor have a dedicated LFE Low pass setting available in the menus?