Couple questions about Yamaha RX-A3060

[Hasan Alnajdi]

So guys I want to go through lfe one more time.. in my simple few terms..

If lfe is off, bass goes to speakers at a normal rate and the sub is ignored.. when it is on, filters from the avr limit the bass coming from speakers and cross them over to the sub.. making them louder and more efficient.. playing with Hz range may adjust the sound but it stadard 80Hz for achieving localization..

Does that sum it or did i missunderstood something?

 

[William Lemmerhirt]

Hi Hasan. I think you have a good grasp on the concept. To your earlier question. LFE refers only to the .1 in a movie soundtrack. It is a separate channel and uses a range from around 3hz to 120hz. It is only used on movie soundtracks. When you adjust the XO this separate track is unaffected. That's because that information is not taken from the other channels like in music.
Stereo music only contains 2 channels of sound. Sometimes with content to 20hz(rare but sometimes). When you adjust the XO what the subwoofer plays is the redirected bass from the main channels below wherever the XO is set. I hope that helps some. If I can add to that I'd be glad to try. You're doing good.

 

[Pogre]

I'm reviewing what been said last night and I would love if you explain more on lpf and how does it affect stereo signal like audio cds

LPF of LFE does not affect a stereo signal at all. It's mainly for movies that are recorded in 5.1 or above. Movies are mixed differently than stereo recordings.

The crossover you set is what will affect stereo playback. If you have it set at 80hz, then your speakers will play everything above that and your sub takes over below it.

 

[William Lemmerhirt]

Being a graphics guy I thought some images might help. Let me know if you find these to confuse you further. I hope it makes it easier.

 

[Hasan Alnajdi]

Hi Hasan. I think you have a good grasp on the concept. To your earlier question. LFE refers only to the .1 in a movie soundtrack. It is a separate channel and uses a range from around 3hz to 120hz. It is only used on movie soundtracks. When you adjust the XO this separate track is unaffected. That's because that information is not taken from the other channels like in music.
Stereo music only contains 2 channels of sound. Sometimes with content to 20hz(rare but sometimes). When you adjust the XO what the subwoofer plays is the redirected bass from the main channels below wherever the XO is set. I hope that helps some. If I can add to that I'd be glad to try. You're doing good.

So basically when I played thor last night there was no difference in sound? Because .1 track wasnt affected and no bass was crossed from the speakers?

 

[William Lemmerhirt]

So basically when I played thor last night there was no difference in sound? Because .1 track wasnt affected and no bass was crossed from the speakers?

Not necessarily. If I remember correctly, the bass was crossed lower, and you raised it up to 80 right? Since the subwoofer was playing more of the redirected bass you likely noticed more fullness, and maybe more dynamics since the avr wasn't bogged down by playing the lower frequencies on the other speakers.
I maybe didn't mention that the xo won't effect the LFE channel, but it WILL still effect the other channels, just as in stereo playback. Am I making sense? Did the images help?

 

[Hasan Alnajdi]

Not necessarily. If I remember correctly, the bass was crossed lower, and you raised it up to 80 right? Since the subwoofer was playing more of the redirected bass you likely noticed more fullness, and maybe more dynamics since the avr wasn't bogged down by playing the lower frequencies on the other speakers.
I maybe didn't mention that the xo won't effect the LFE channel, but it WILL still effect the other channels, just as in stereo playback. Am I making sense? Did the images help?

I have no idea what the crossed level were before doing the settings... so I'm not sure if it was raised or not.. crossover settings only appear ped when I changed my speakers to small.. on large there was no extra settings.

But if I am getting what you're saying right... crossover works both on movie soundtrack and stereo audio but it will only affect the speakers channels.. not the lfe which is dedicated to the subs.. or maybe add to the lfe what the speaker channels miss under 80Hz?

The picture helped to an extent (the first image didn't really make sense to me)

 

[Hasan Alnajdi]

LPF of LFE does not affect a stereo signal at all. It's mainly for movies that are recorded in 5.1 or above. Movies are mixed differently than stereo recordings.

The crossover you set is what will affect stereo playback. If you have it set at 80hz, then your speakers will play everything above that and your sub takes over below it.

I got it my friend.. thanks

 

[William Lemmerhirt]

I have no idea what the crossed level were before doing the settings... so I'm not sure if it was raised or not.. crossover settings only appear ped when I changed my speakers to small.. on large there was no extra settings.

But if I am getting what you're saying right... crossover works both on movie soundtrack and stereo audio but it will only affect the speakers channels.. not the lfe which is dedicated to the subs.. or maybe add to the lfe what the speaker channels miss under 80Hz?

The picture helped to an extent (the first image didn't really make sense to me)

Excellent! Also if I remember correctly, in the image you posted, the XO was set to the lowest point(40hz?) and the line in input connection was used so by changing those things an running ypao again, a lot was changed.

 

[Hasan Alnajdi]

Excellent! Also if I remember correctly, in the image you posted, the XO was set to the lowest point(40hz?) and the line in input connection was used so by changing those things an running ypao again, a lot was changed.

The image is fully complete.. thanks alot my friend

 

[William Lemmerhirt]

The first image is actually the simplest to understand. Imagine both sets of lines as one track. The top set(2 lines) shows how the XO works. From 20-80 is the subwoofer range and from 80-20,000 is the speakers range. The reason for the sloped lines at the ends are how the filters actually work. A XO does not stop all frequency information exactly at 80. It's a gradually descending reduction of 12 decibels per octave on either side. The lfe image is what's present regardless of subwoofer+speaker content.

 

[William Lemmerhirt]

The image is fully complete.. thanks alot my friend

My pleasure! I hope to have added to your journey.

 

[Hasan Alnajdi]

My pleasure! I hope to have added to your journey.

You have my friend.. thanks again..

There's something though I'm having hard time figuring out.. what is the input sensitivity of my avr? There's nothing on the back of nor the manual.. not to mention online?

Is it 1.4v or 0.775v?

 

[William Lemmerhirt]

I'm sorry, do you mean output voltage of subwoofer channel? Or maybe input sensitivity of the subwoofer amp?

 

[Hasan Alnajdi]

I'm sorry, do you mean output voltage of subwoofer channel? Or maybe input sensitivity of the subwoofer amp?

I'm trying to add a power amp to my system... there's an input sensitivity switch with two choices 1.4V or 0.775V.. now I don't know if it is for the avr it self or for the speakers.. i doubt it has anything to do withe subs because it powers only 2 channels

 

[William Lemmerhirt]

Ok. That's the output voltage of the pre-outs. I'll look...
I would guess it's the lower .775 since Yamaha has a reputation of too low voltage at the rca outs. Still looking.

 

[Hasan Alnajdi]

Ok. That's the output voltage of the pre-outs. I'll look...
I would guess it's the lower .775 since Yamaha has a reputation of too low voltage at the rca outs. Still looking.

Appreciate the effort... many many thanks my friend

 

[Pogre]

 

[Hasan Alnajdi]

View attachment 20591

You just broke my heart friend... I can't watch this movie with my wife cos she thinks I have a crush on trinity

 

[Pogre]

You just broke my heart friend... I can't watch this movie with my wife cos she thinks I have a crush on trinity

Ha ha! Well, do you...?

You and ADTG (another member here) would be in agreement on that one for sure.