LFE on the C2

[davidwsu1]

Hi eveyone I am new here. I am also very new in the home theater area too. I need some advise on these questions and was wondering if you guys could help me out.

1. My boston vrm80 bottom out while watching Finding Nemo the other day. I currently do not own a subwoofer but a SVS pb2+ is onw its way. My question is will the C2 stop sending the all these base to my front speakers after I hook up the subwoofer. Or should I switch it to my front speaders to small instead of large (current setting).

2. Did you use autocalibration to calabrate your subwoofer or do I need to buy an SPL meter?

3. Do I need to do any adjustment with the LFE level after hooking the subwoofer?

Thanks

[Scarp]

1) When you setup the system with subwoofer=no, then the fronts must be large and will receive the LFE.
When you have your subwoofer, you must set subwoofer=yes and then the LFE will only be send to the subwoofer. This will lighten the burden of your speakers.

2) You subwoofer can be calibrated with the autocalibration, but as it says in the manual it can fail. If it fails then you will have to do this yourself. Please read the manual on this subject.

3) If you left things like Extra Bass and stuff on their default values, you only need to set the subwoofer to yes in your speaker setup. The rest goes automatically.

[Chris D]

Hey, David, welcome to the Guide! And another fellow Washingtonian as well. arty: Congrats on the new sub!

In addition to what Scarp posted, many people on this website recommend using a Behringer Feedback Destroyer, or BFD, to properly calibrate and process subwoofer frequencies. While the C1/C2 has this feature as well, I thought I'd pick one up myself and try it out to see if it does any better as a dedicated unit. It's only $120 from Part Express using the link at the top of these pages, and it even can feed two separate subwoofers, like I plan on using. I haven't hooked it up yet to fiddle around, but I'll let you know how it turns out when I do.




CHRIS
Luke: "Hey, I'm not such a bad pilot myself, you know"

[davidwsu1]

Thanks for replying guys. really appreciated

To be honest, I am so new to the HT world, I don't even know how to use the SPL meter to calibrate my system. Thank you for the advice scarp, I will set my fron speakers to small after I hook up my subwoofer.

If after the autocalibration and I feel I need some more bass. should I adjust the sub output from the C2 or increase the gain directly from the sub.?

Chris, since you are from Washington too. I was wondering if you are willing to exchange phone number. My email address is davidwsu1@yahoo.com

thanks

david

[Scarp]

Thanks for replying guys. really appreciated

To be honest, I am so new to the HT world, I don't even know how to use the SPL meter to calibrate my system. Thank you for the advice scarp, I will set my fron speakers to small after I hook up my subwoofer.

If after the autocalibration and I feel I need some more bass. should I adjust the sub output from the C2 or increase the gain directly from the sub.?

Chris, since you are from Washington too. I was wondering if you are willing to exchange phone number. My email address is davidwsu1@yahoo.com

thanks

david

Hi,

I don't know what speakers you have, but depending on the speakers you need to select a good crossover. Since you can only use one crossover it pays to play a bit with the values to see what you can use.

A good rule of thumb is: 1.5 x the highest -3 dB value of your speakers.
So, lets say your surrounds have a -3 dB value of 60 Hz, you would typically put your crossover somewhere near 1.5 * 60 = 90 Hz ... that would come to 80 or 100 probably.

Even though your front speakers might be bigger and go deeper in their bass, it might still be a good idea to put them to small. This relieves those speakers of the burden of producing those low bass and leaves it with more room to give you the sound range in which our ears are better suited

Besides that, the crossover is not a brickwall filter. Bass will still extend down the crossover on your speakers.

Best thing is still to experiment with these settings.

(btw. I think THX actually requires all speakers to be small and leave all bass over to a subwoofer)

[Chris D]

David, YGM.




CHRIS
Luke: "Hey, I'm not such a bad pilot myself, you know"

[Chris D]

Oh, and David, more about what we talked about on the phone--if the BFD sounds interesting to you at all, do a search for "Behringer" or "BFD" on HTGuide. There are several threads that have been posted in the past on the BFD, including from Sonnie Parker that I think is our resident BFD expert. Even detailed information on how to set up and use one.

(throwing out a fishing lure here) David, can you give everyone more detail about how and when your speaker bottomed out? I found that interesting/amusing, and can put myself in your shoes.




CHRIS
Luke: "Hey, I'm not such a bad pilot myself, you know"