Axiom Home Page Forums General Discussion Home Theater BFD?

Allright. Enough of looking at bigger amps and more expensive receivers. I want to make a purchase that is going to make a significant sonic difference in my system. So I figure that if I can buy something that will flatten out the nulls and peaks in my frequency graph I would be making a wise purchase.

So here's the question. Is the BFD that is frequently mentioned around here really going to help me? It would appear that it is for two channels, so what about multi-channel for music and movies? I read the info at the Behringer site but I am still confused.

How many of you out their have made this purchase and did it make a significant difference. It would seem that if it could flatten out the frequency response that it would be one of the best additions to any system that you could get.

Any help is much appreciated as always.

Ask MarkSJohnson. He's had his BFD for about 6 months now and should be an expert on it!


Seriously, I believe Tharkun has one, but it was Peter and Ken who set it up. Maybe they can chime in. I've had my eye on that BFD for some time, but have avoided it because it looks like a headache to deal with.

Good one, Sean.

AFAIK the two channel limit isn't a big deal because you most commonly use it to level out your subwoofer response... and two subs is all that most of us are likely to have...

... or, at least, that anyone is likely to use on a single system at the same time

I'd first measure your sub's room response to see the extent to which you are dealing with room nulls and peaks. Although you didn't say so in your post, I assume you are interested in addressing your sub, rather than the peformance of your mains. The BFD is not suited to EQ frequencies much above those handled by subwoofers.

If you haven't already check out Sonnie's BFD Guide and Forums:

http://bfdguide.ws/

Be aware that adding a BFD into your system may introduce a ground loop. Safely addressing that issue may involve the purchase of a ~$100 transformer.

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... and two subs is all that most of us are likely to have...

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And then....................................there is Craigsub! I believe he's the exception that proves the rule.

What does BFD mean?

Big Freakin' ...

Seriously, Behringer Feedback Destroyer. I haven't used one myself, but I understand it includes a pretty good parametric equalizer which a number of people use to improve their low frequency response.

>>I'd first measure your sub's room response to see the extent to which you are dealing with room nulls and peaks.

Ahh, you obviously haven't read the Mother Of All Posts. Suggest you do a search on "mother of all posts" then take a quick (ha !!) read through Mark's excellent production. Graphs, photographs, objectives, alternatives, everything. You will be impressed.

EDIT - my mistake... there is another thread where Mark is wondering about how effective a BFD would be. This, however, is not that thread. Ignore the above... unless you haven't read the MOAP in which case I do recommend it anyways (even though it describes someone else's room ).

>>And then....................................there is Craigsub!

Yes... I had to add that second line to the post to cover Craig. While he may have owned every sub under the sun, I believe he rarely uses more than two at a time in the same room... on the same system... playing the same disk... (what other qualifiers can I think of ?).

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I believe he rarely uses more than two at a time in the same room... on the same system...

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I'm sure he doesn't. The only instance of that I can remember was when he had 4 UFW-10s up and running at the same time, in the same room, on the same system.