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  Topic Review (Newest First)
08-05-14 11:06 PM
RH55 I would have an 18" sub at the back of the room balancing out the sound. I thought adding a third sub would add to the over all pressurization but wasn't sure. I would have two in front and one in back.
08-04-14 07:51 AM
bpape
Re: worth building panels?

Well, if it's going to have to go in the front too I suspect you'll have somewhat the same issue. The whole idea of a 2nd sub is to put it elsewhere in the room to smooth response and pressurize the room more evenly.
08-02-14 05:56 AM
RH55 Thanks Brian. I have ordered a roll of linacoustic to deal with decay times and some 3lb rigid fiberglass. (Morinbros in Ottawa, Ontario was my source , for anyone local having trouble finding this stuff).

I am going to run some sweeps with the mic to try and get an idea why I'm not hearing bass from the front of the room. I'll also build some corner traps in the front to smooth out my response.

Dumb question though: could adding one or even two more subs improve the overall bass in the room even if placed in this strange dead spot? A new sub would have to go in the front of the room, but I guess I'm wondering if the over all movement of air would be worth the investment.
08-01-14 09:55 AM
bpape
Re: worth building panels?

Sure - it'll help the decay times in the room.
08-01-14 09:34 AM
RH55 In case it helps here are some shotsbof the front of the room, including the ceiling cave formed by the soffit at the front.
08-01-14 09:21 AM
RH55 I was thinking that those panels would be more about improving the overall reverb and surround stage than the bass problem.

I recently bought a minidsp calibrated mic. Are there some tests that I could run to better identify the problem?
08-01-14 09:15 AM
bpape
Re: worth building panels?

I'm not sure it's going to help your bass issues. Need to figure out the WHY you're having the issue before we can determine how to address it.
08-01-14 08:52 AM
RH55 They are running at 80/small. I have the triton7s which don't have sub's but do have passive radiators. I've changed receivers, sub's and speakers over the past few years and have always had this problem. Putting the sub in back has made a huge difference though.

Brian what do you think about the canvas panels above the linacoustic (I just found a local source this morning)? Should I make them acoustic panels or not bothrr
08-01-14 08:35 AM
bpape
Re: worth building panels?

Are you running the mains full range or cutting them off at 80 by setting the processor to small for them? If they're running full range, easily could be the sub being out of phase with the subs in the GE's
08-01-14 08:26 AM
RH55 Thanks for responding.

I may have described the issue poorly. If the subwoofer is placed in the front of the room then its bass can't be heard in either row of seating, or outside the first four feet near the screen (where the soffit starts).This was the case before I had a second row when the front row was back a couple of feet. I once tried removing all of the seating and it still happened.

The photo shows the right speaker, but not the front wall, it sits about 2.5-3' from the front. The riser is about 6'8" deep, so when seated in the front row you're about 12' from the front wall. I just built and carpeted the riser and am now a little panicked to get home and double check those measurements.
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