Discussion in 'Subwoofers' started by Murray, Jan 7, 2005.
What passes more bass to the sub, when the crossover is set to 80hz or 100hz?
100hz. Your Bass Management settings will have a greater effect on the sub output though. All speakers set to small, all bass to sub will have your sub doing more than say, all speakers large, LFE only to sub.
Don't forget that although 100Hz will pass more bass to the sub that the higher the frequency the more localised it will become so the lower the better from that point of view
IS there an agreed frequency that the LFE channel kicks in when all speakers are set to large? or does it depend on the material?
The LFE channel contains what the Sound Mixer put in it which could be anything but tends to be the deeper bass stuff.
I found this information.
"Dolby Digital's LFE channel carries additional bass information from 120 Hz on down. This is not a roll-off but a digital brick wall (i.e., no 121 Hz info), so the content is usually rolled off by the sound engineer starting around 80 Hz for a smoother blend."
That's very interesting Bob, definitely makes bypassing the sub's crossover a good recommendation.
I was interested in what was the best way to set up my Tannoy R15 sub to my Pio AX3. At the moment I have the speakers set to large (Tannoy R3 frs and R2 rs) and the sub setting to plus. How would I go about bypassing the subs crossover - or have I already done it? If not , what settings should I have on the back of my sub?
Thanks for any advice,
I have a B&W ASW3000 sub, & i allways thought it sounded ok, but recently after reading a few things on this forum, i tried setting my crossover on the sub to its max, 120hz i think, & the volume to half way round, & now it sound awsome, AWSOME i tell you !! (All my other speakers are set on large as they allways have been) Its hard to think another sub would sound better (although i know there are a lot better subs out there) as i can feel all the shock waves hit me with that wobble wave feeling, its just great now. I do have the sub running hot but thats how i like it, its only for movies.
Just my 2p worth. i found that when I changed from 80 to 100Hz in my 3802 that the sub sounded MUCH better. But then my room compared to anyone elses will be different. However, is 100Hz the correct level? Or is it a case of what sounds best?
It's definitely a case of how you like it as each sub and speakers will integrate differently within a room.
80Hz is the "standard" as this is what THX rated gear has to use. I've had good results with both 80Hz and 100Hz on my Marantz 7400 depending on how loud the sub is and if the speakers are set to large or small.
80Hz and all small is a good place to start but the crossover would be the first thing I'd experiment with.
I have just changed my sub crossover, or I should say my processor crossover to 58Hz, and it is the best I have ever heard it, it blends completey seemlessly with music, and on a frequency sweep, where as I always got a spike around 70-74hz before.
It really is a case of experimenting.
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