A Guide to Bass Management (Part II)

[frogmort]

Originally Posted by lDlisturb3d

I have a huge question that i need answering. I have my LPF for lfe set to 180 on my reciever as you stated but there's another selection on the back of my sub. 180-35hz. What am i suppose to set it too. I had it at 35 for a while but 180 seems to give me more overall base. I have towers and they are set to small. The regular crossover is set to 60hz.

I am definitely no Big Daddy, but from what I've read, the low pass filter(LPF) for the low frequency effect(LFE) channel should always be set to 120hz in your AVR. Since your receiver is doing the crossovers and bass management, you do not want to redundantly use the built in crossover on your subwoofer, so it should be set to wide open (180hz in your case), so as not to interfere with the crossovers and bass management being done by your receiver.

Some subwoofers also have an LFE input that automatically bypasses the built in crossover in the sub. If yours has this, it would be the preferred way to hook it up. If not, just set the subwoofers crossover wide open to let the receiver handle it.

As far as the 120hz LPF on the LFE, I posted something about this last night, so I'll just slightly edit it and paste it in here for reference if you're interested:

Originally Posted by frogmort

From Chris Kyriakakis(inventor and CTO of Audyssey): "It's a filter that is applied to the content of the separate LFE track found in 5.1 content. That content is authored up to 120 Hz and so the only correct setting is 120 Hz."

https://audyssey.zendesk.com/entries/321931-lpf-on-lfe


From Big Daddy: "What is LFE (Low Frequency Effects)?
The LFE (.1) provides a dedicated channel for the low bass that is used in theaters to add impact to the movies. The LFE signal is band-limited to frequencies below 120 Hz.

The LFE channel is an independent channel and has no effect on the other speakers. The information that is in the LFE channel extends up to 120Hz regardless of whether you have bookshelf speakers or full-range super tower speakers. It is important to distinguish between the LFE channel and what goes to a subwoofer. The LFE is a production channel, whereas the subwoofer is a playback channel."

https://forum.blu-ray.com/showthread...ighlight=120hz