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post #21721 of 62257
12/21/09 at 1:02pm
Hiya everyone
First off Merry Christmas and a Happy and Safe new year to you all.

A bit of feedback if thats cool. I decided to do some Audyssey runs after reading heaps of threads always searching for the never ending tweek. Now I changed something I raised the microphone an inch maybe two higher. The old settings where it was lower was because of my type of couch and how I like to kick back in it. But I raised it 2 inches to simulate me sitting up (Better posture) I suppose. Both heights were never lower than the actual couch in any part to cause reflection.

With this newer mic height I noticed a difference in Audysseys findings it used to set all speakers to full range (Paradigm reference studios series 100s fronts and 690 centre) and Dali concept sides and rears)

The difference I have found is it is setting crossover for my enormous cc690 front speaker between 70-120 hz? I can only attribute this to the newer mic height.

The Paradigm Studio cc 690 centre is sitting below the tv. So is definetly not at ear level.

Any feedback to why this is happening guys. Should I go back to lowering the mic a little bit?

Thankyou
Justin
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post #21722 of 62257
12/21/09 at 1:09pm
Quote:
Originally Posted by Invictus 14 View Post

With this newer mic height I noticed a difference in Audysseys findings it used to set all speakers to full range (Paradigm reference studios series 100s fronts and 690 centre) and Dali concept sides and rears)

Hi Justin,

First: Audyssey does not decide on Full Range (Large) or Small. The AVR software decides when to do this. Audyssey always recommends that if there is a subwoofer in the system all speakers should be set to Small. This is a bad industry term for: "turn on bass management and send bass to the sub". Any speakers set to Full Range will not be sending content to the sub.

I have written more about this here.

The main benefit (from an Audyssey perspective) of sending bass to the sub is that you get 8x more resolution in the room correction filters and thus better bass response.

Now, the reason for the difference between the two runs is most likely mic placement. The –3 dB roll off point of the speaker is found by combining the measurements in the listening area. So, if the mic positions vary you could get slightly different results. Most AVR makers use 40 Hz as the decision point after a lot of urging from Audyssey (they used to use 80 Hz and that often resulted in customers saying: I have no bass--and in fact they didn't...).

My recommendation is to make sure that none of your speakers are set to Full Range regardless of which first mic position you decide to use.
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post #21723 of 62257
12/21/09 at 1:13pm
Quote:
Originally Posted by audyssey View Post

Hi Justin,

First: Audyssey does not decide on Full Range (Large) or Small. The AVR software decides when to do this. Audyssey always recommends that if there is a subwoofer in the system all speakers should be set to Small. This is a bad industry term for: "turn on bass management and send bass to the sub". Any speakers set to Full Range will not be sending content to the sub.

I have written more about this here.

The main benefit (from an Audyssey perspective) of sending bass to the sub is that you get 8x more resolution in the room correction filters and thus better bass response.

Now, the reason for the difference between the two runs is most likely mic placement. The first mic position determines the -3 dB roll off point of the speaker. Most AVR makers use 40 Hz as the decision point after a lot of urging from Audyssey (they used to use 80 Hz and that often resulted in customers saying: I have no bass--and in fact they didn't...).

My recommendation is to make sure that none of your speakers are set to Full Range regardless of which first mic position you decide to use.


Thankyou very much Chris
I always set them to "Small" after running MultEq. They are relatively new so I am playing around between the 60-80hz range. I was just wondering why after calculating it has changed my centre to 70 to sometomes 120 hz x over and if it is related to Mic height?
Thanks again
Justin
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post #21724 of 62257
12/21/09 at 1:15pm
Quote:
Originally Posted by bluesky636 View Post

In my experience, subs built in the 80s/90s were all about thumpin' and bumpin' (think Cerwin-Vega, and yes, Velodyne) than they were about accuracy.

Not to stray too far off topic here, but I strongly disagree with this generalization. I won't argue that there are certainly a lot MORE units offered today that strive for and achieve higher accuracy at high output, but to make the general statement that Velodyne subs from the 80's and 90's were not about accuracy is simply not... accurate.

Velodyne servo subs have ALWAYS been about accuracy, and the ULD18 servo unit came out in 1984. The Velodyne F series were also considered to be very good because of their LACK of "boominess," and the first version of these came out in the early 90's, followed later by the FSR series, and then the HGS series in the late 90's. ALL of these servo units are still considered to be quite accurate, even by today's standards.

Note also that while there are more offerings of "accurate" subs these days, there are ALSO a LOT more offerings of inaccurate subs as well.

Larry
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post #21725 of 62257
12/21/09 at 1:16pm
Quote:
Originally Posted by Invictus 14 View Post

Thankyou very much Chris
I always set them to "Small" after running MultEq. They are relatively new so I am playing around between the 60-80hz range. I was just wondering why after calculating it has changed my centre to 70 to sometomes 120 hz x over and if it is related to Mic height?
Thanks again
Justin

Most likely because the Center channel is in a cabinet (or simply being influenced by the floor reflection). There is probably a peak in the 120 Hz region that is picked up as you move the mic. I would suggest crossing it at 120 Hz so that the bass from that channel can be directed to the sub and therefore benefit from the higher resolution correction.
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post #21726 of 62257
12/21/09 at 1:22pm
Quote:
Originally Posted by audyssey View Post

Dynamic Volume is designed to constrain the dynamic range around a reference level. In film content that is dialog and Dynamic Volume leaves that untouched. It makes sure that things don't get too loud above and not too soft below that level. That way you can set the volume control for the dialog level you prefer and not have to worry about changing the volume all the time when watching movies.

For music, however, things are different. There is no known reference level and most music is recorded at much higher levels than film. So, yes, if the music you are listening to is louder than that reference you will notice a drop in volume when you turn Dynamic Volume on. You can always make an adjustment to the master volume for the level you prefer and then Dynamic Volume will make sure that your music won't get too loud. Especially good for late night listening. If you don't need this functionality then you can turn it off. However, you will notice that every time you put in another CD you will have to change the volume...

Dynamic EQ is something else entirely. It is on with Dynamic Volume or can be used on its own. It makes adjustments to the frequency response to better match human hearing as you lower the volume. Our perception of low and high frequency balance changes at lower volume levels and Dynamic EQ restores the original balance without having to listen at high levels.

Hiya Chris
On my Onkyo 906 I have Equalizer settings for -Off-MultEQXT-DynamicEQ-Dynamic volume Light-Dynamic volume Heavy-or an option to enter all equalizer settings per speaker myself.

So would it be safe to say to turn Dynamic EQ off I go to MultEQ Xt, Or If I want Dynamic EQ I select that (thats obvious) and If I selct dynamic volume Light or Heavy the are both in conjunction with Dynamic EQ for instance Dynamic Volume Light would mean dynamic EQ plus Dynamic volume Light?

I am sorry but my manual is far from clear on this and all the 906 forums have been un in-habited for a while now. So this being more of an Audyssey question maybe you can enlighten me?

Thankyou
Justin
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post #21727 of 62257
12/21/09 at 1:28pm
Quote:
Originally Posted by audyssey View Post

Most likely because the Center channel is in a cabinet (or simply being influenced by the floor reflection). There is probably a peak in the 120 Hz region that is picked up as you move the mic. I would suggest crossing it at 120 Hz so that the bass from that channel can be directed to the sub and therefore benefit from the higher resolution correction.

Thankyou very much Chris

Its on a free standing TV table I have a carpeted floor but could definetly be relecting off the tv table. Its a monster of a centre speaker but will definetly look at your reccommendation. I plan on running Audyssey again soon as I am trying to get it to integrate with my Sunfire Signature Sub better. So I will run with the chosen x over for the centre providing its not lower than 70hz based on your reccomendation.
Thanks Again
Justin
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post #21728 of 62257
12/21/09 at 1:31pm
Quote:
Originally Posted by Invictus 14 View Post

I am sorry but my manual is far from clear on this and all the 906 forums have been un in-habited for a while now. So this being more of an Audyssey question maybe you can enlighten me?

The best place to look is p. 64 of the 906 manual.

"Enabling Audyssey MultEQ XT
allows you to also use Audyssey Dynamic EQ, which
maintains the proper octave-to-octave balance at any
volume level."

"If Audyssey Dynanic EQ is set to Enable,
Audyssey Dynamic Volume becomes available."

So, in order to use Dynamic EQ and/or Dynamic Volume you must first run and engage MultEQ. If you turn off MultEQ (e.g., set it to Manual) then all Audyssey technologies are turned off.

You can use Dynamic EQ without Dynamic Volume if you don't need automatic volume adjustment. When you do turn Dynamic Volume on it automatically turns on Dynamic EQ to make sure that the balance is right at lower volumes.

Yes, the Onkyo menu is confusing... It puts everything in the same menu even though they do different things. You can think of it as an increasing series. It starts with MultEQ. Then it "adds" Dynamic EQ on top of that. Then it adds Dynamic Volume (Light or Heavy).
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post #21729 of 62257
12/21/09 at 1:41pm
Quote:
Originally Posted by audyssey View Post

The best place to look is p. 64 of the 906 manual.

"Enabling Audyssey MultEQ XT
allows you to also use Audyssey Dynamic EQ, which
maintains the proper octave-to-octave balance at any
volume level."

"If Audyssey Dynanic EQ is set to Enable,
Audyssey Dynamic Volume becomes available."

So, in order to use Dynamic EQ and/or Dynamic Volume you must first run and engage MultEQ. If you turn off MultEQ (e.g., set it to Manual) then all Audyssey technologies are turned off.

You can use Dynamic EQ without Dynamic Volume if you don't need automatic volume adjustment. When you do turn Dynamic Volume on it automatically turns on Dynamic EQ to make sure that the balance is right at lower volumes.

Yes, the Onkyo menu is confusing... It puts everything in the same menu even though they do different things. You can think of it as an increasing series. It starts with MultEQ. Then it "adds" Dynamic EQ on top of that. Then it adds Dynamic Volume (Light or Heavy).

Chris
Once again thankyou very much mate

That really cleared it up for me and makes perfect sense. I finally know where I stand in these selections. And yes the Onk manual is a bit confusing.

Just wanted to add I have read all your posts and your website. I only like the fact of a full range finding on speakers after Audyssey has finished cause then it gives me all the options to move up in selecting them to small. Whereas if I get a high x over once its finished calculating I cant move down. I am not sure if you kinow about the Paradigm cc 690 centre but its a beast easily capable of at least 40hz so was wondering if mic height was changing that and as you suggested may be picking up a reflection somewhere maybe Tv table.

Thanks again for your time Have a Geat Christmas and New year. Time for me to go do some tweaking
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post #21730 of 62257
12/21/09 at 1:54pm
Quote:
Originally Posted by Invictus 14 View Post

I am not sure if you kinow about the Paradigm cc 690 centre but its a beast easily capable of at least 40hz so was wondering if mic height was changing that and as you suggested may be picking up a reflection somewhere maybe Tv table.

I don't think it's the table reflection. I would bet it's the floor reflection. The table is too small to influence the long wavelengths at 70-120 Hz. Moving the mic to a different location makes it "see" a different response so it's likely that this is what you are observing.
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post #21731 of 62257
12/21/09 at 1:54pm
Quote:
Originally Posted by lalittle View Post

Not to stray too far off topic here, but I strongly disagree with this generalization. I won't argue that there are certainly a lot MORE units offered today that strive for and achieve higher accuracy at high output, but to make the general statement that Velodyne subs from the 80's and 90's were not about accuracy is simply not... accurate.

Velodyne servo subs have ALWAYS been about accuracy, and the ULD18 servo unit came out in 1984. The Velodyne F series were also considered to be very good because of their LACK of "boominess," and the first version of these came out in the early 90's, followed later by the FSR series, and then the HGS series in the late 90's. ALL of these servo units are still considered to be quite accurate, even by today's standards.

Note also that while there are more offerings of "accurate" subs these days, there are ALSO a LOT more offerings of inaccurate subs as well.

Larry

Thanks for your input, Larry.

The Velodyne S1200 is a servo unit and the reason that I bought it was because as you said; a lot of so called subs were just boom boxes that never seemed to stop. Booming that is. Velodyne was in the forefront of subwoofer devolopment and had a very good reputation for manufacturing state of the art products.

Anyway, I turned down the LPF on the sub to 80hz, set the level around 11 o'clock and re-calibrated. Voila! Nice tight bass and only when called for. No constant drone from having the LPF set at 100hz. My speaker distance was right on and the calibrated sub level was -1.5db. Right in the sweet spot. I left the Onkyo LFE sub at 120hz.

Thanks to everyone who replied, but in my case, one size doesn't fit all.
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post #21732 of 62257
12/21/09 at 2:38pm
Quote:
Originally Posted by audyssey View Post

Hi Justin,

First: Audyssey does not decide on Full Range (Large) or Small. The AVR software decides when to do this. Audyssey always recommends that if there is a subwoofer in the system all speakers should be set to Small. This is a bad industry term for: "turn on bass management and send bass to the sub". Any speakers set to Full Range will not be sending content to the sub.

I have written more about this here.

The main benefit (from an Audyssey perspective) of sending bass to the sub is that you get 8x more resolution in the room correction filters and thus better bass response.

Now, the reason for the difference between the two runs is most likely mic placement. The first mic position determines the -3 dB roll off point of the speaker. Most AVR makers use 40 Hz as the decision point after a lot of urging from Audyssey (they used to use 80 Hz and that often resulted in customers saying: I have no bass--and in fact they didn't...).

My recommendation is to make sure that none of your speakers are set to Full Range regardless of which first mic position you decide to use.

Chris,
We all know that the first sets the levels and distances but the -3dB point as well?
I recall that you said it was the combined responses from all measurements and not only the first measurement position??
"The -3 dB roll off frequency in your NAD (and every other MultEQ or MultEQ XT product) is found by looking at the combined responses from all measurements. That frequency is then reported to the NAD bass management system that uses it as the crossover frequency."

http://www.avsforum.com/avs-vb/showt...8#post16014968
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post #21733 of 62257
12/21/09 at 2:50pm
Quote:
Originally Posted by rickardl View Post

Chris,
We all know that the first sets the levels and distances but the -3dB point as well?
I recall that you said it was the combined responses from all measurements and not only the first measurement position??

You're right...I typed my previous message too fast. The -3 dB point is, indeed, calculated from the combined measurements. I will edit my message above to reflect that.

Thanks for paying attention!
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post #21734 of 62257
12/21/09 at 5:05pm
Quote:
Originally Posted by audyssey View Post

However, you will notice that every time you put in another CD you will have to change the volume...

Dynamic EQ is something else entirely. It is on with Dynamic Volume or can be used on its own. It makes adjustments to the frequency response to better match human hearing as you lower the volume. Our perception of low and high frequency balance changes at lower volume levels and Dynamic EQ restores the original balance without having to listen at high levels.

So here is my issue. With Dynamic Volume on, it works well to tame those loud effects in movies. But I have been having a strange issue with a Denon 790. When I watch TV (HD cable box), when I switch channels or even fast forwarding through commercials, the volume sometimes changes. I am always needing to change master volume higher and lower as there is about a 5dB sound change when the signal comes back (from changing channel or fast forwarding through the commercials). Have you heard of this issue and is there a way to try and fix this. I have disabled Dynamic Volume but this still seems to happen. Sometimes, watching TV at -15dB is good, sometimes, I have to go up to -8dB. And this could be for the same show. Any ideas?
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post #21735 of 62257
12/21/09 at 5:15pm
Quote:
Originally Posted by Patrick Murphy View Post

Anyway, I turned down the LPF on the sub to 80hz, set the level around 11 o'clock and re-calibrated. Voila! Nice tight bass and only when called for. No constant drone from having the LPF set at 100hz. My speaker distance was right on and the calibrated sub level was -1.5db. Right in the sweet spot. I left the Onkyo LFE sub at 120hz.

Thanks to everyone who replied, but in my case, one size doesn't fit all.

I am honestly glad that you are happy.

However, if it were me and my sub was humming and droning at a 100 Hz LPF setting, I would want to find out why and try to fix it. And not just by lowering the filter setting. As far as having the sub LPF and main to sub AVR crossover both set to 80 Hz (with the AVR LFE LPF set to 120 Hz), I'll let Chris or someone else explain the issues that can arise from cascading filters.

Enjoy your system and have a happy holiday.
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post #21736 of 62257
12/21/09 at 5:23pm
Quote:
Originally Posted by bowmah View Post

So here is my issue. With Dynamic Volume on, it works well to tame those loud effects in movies. But I have been having a strange issue with a Denon 790. When I watch TV (HD cable box), when I switch channels or even fast forwarding through commercials, the volume sometimes changes. I am always needing to change master volume higher and lower as there is about a 5dB sound change when the signal comes back (from changing channel or fast forwarding through the commercials). Have you heard of this issue and is there a way to try and fix this. I have disabled Dynamic Volume but this still seems to happen. Sometimes, watching TV at -15dB is good, sometimes, I have to go up to -8dB. And this could be for the same show. Any ideas?

As Chris has stated on numerous occasions, neither CDs nor TV broadcasts are recorded at a standard reference level. Therefore, as the TV program average volume level changes, Dynamic EQ/Dynamic Volume tries to correct for the changes but without a standard reference level the correction is not always accurate.
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post #21737 of 62257
12/21/09 at 7:10pm
Quote:
Originally Posted by bluesky636 View Post

As Chris has stated on numerous occasions, neither CDs nor TV broadcasts are recorded at a standard reference level. Therefore, as the TV program average volume level changes, Dynamic EQ/Dynamic Volume tries to correct for the changes but without a standard reference level the correction is not always accurate.

I can understand the variation in level with Dynamic Volume off. But, with Dynamic Volume on the variations should be minimized... I wonder if there is some sort of dynamic range compression happening in the cable box that could be causing this.
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post #21738 of 62257
12/21/09 at 7:30pm
Quote:
Originally Posted by audyssey View Post

I can understand the variation in level with Dynamic Volume off. But, with Dynamic Volume on the variations should be minimized... I wonder if there is some sort of dynamic range compression happening in the cable box that could be causing this.

Dynamic range compression either by the cable company or the source ... and some channels are a lot lower (or louder) than the others.
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post #21739 of 62257
12/21/09 at 8:38pm
Quote:
Originally Posted by audyssey View Post

I can understand the variation in level with Dynamic Volume off. But, with Dynamic Volume on the variations should be minimized... I wonder if there is some sort of dynamic range compression happening in the cable box that could be causing this.

Quote:
Originally Posted by pepar View Post

Dynamic range compression either by the cable company or the source ... and some channels are a lot lower (or louder) than the others.

I don't have Dynamic Volume on my Onkyo 706, but considering some of the variations in volume level I get from DirecTV I don't think even DV could handle things unless used at the max setting all the time.

Could there also be an issue with DynamicEQ that since the levels on tv broadcasts do not meet any standard, DynamicEQ might be overemphasizing the bass and surround channels making Dynamic Volume's job even harder? I have the input trim on my Onkyo set to -6 dB for the DirecTV HDMI input which seems to help quite a bit. Set to 0 dB, tv is incredably boomy.
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post #21740 of 62257
12/21/09 at 8:59pm
Chris,

Quote:
Originally Posted by audyssey View Post

Noah,
I am somewhat familiar with how speakers work... Your conclusions are incorrect...There is nothing "bad news" about equalizing the room response of a vented subwoofer.

? I didn't say there was; I said that about boosting a vented system 6 db at a freq below Fb, which I believe this is true regardless of what MultEQ does or doesn't do.
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post #21741 of 62257
12/21/09 at 9:00pm
--------------------------------------------------------------------------------

My set-up;
4 TSC T -series Bookshelves 5.25"
1 T-series center dual 5.25"
Bic F-12 sub
Onkyo RC160

After running Audyssey all my speakers are set to "full range" and I have double bass on.

Now my question, should I use the crossover on the sub or let the RC160 control it? My front,center, and surrounds are listed as "full range" by Audyssey and do a fair job with bass but it seems my sub is coming in a little to early (long humming in some parts of a movie). I have not found a way to control the crossover frequency of the sub with the RC160.
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post #21742 of 62257
12/21/09 at 9:07pm
Quote:
Originally Posted by Blazer1 View Post

--------------------------------------------------------------------------------

My set-up;
4 TSC T -series Bookshelves 5.25"
1 T-series center dual 5.25"
Bic F-12 sub
Onkyo RC160

After running Audyssey all my speakers are set to "full range" and I have double bass on.

Now my question, should I use the crossover on the sub or let the RC160 control it? My front,center, and surrounds are listed as "full range" by Audyssey and do a fair job with bass but it seems my sub is coming in a little to early (long humming in some parts of a movie). I have not found a way to control the crossover frequency of the sub with the RC160.

Read the Audyssey Setup Guide. But first, turn double bass off and never use it again.
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post #21743 of 62257
12/21/09 at 9:07pm
Quote:
Originally Posted by Blazer1 View Post

--------------------------------------------------------------------------------

My set-up;
4 TSC T -series Bookshelves 5.25"
1 T-series center dual 5.25"
Bic F-12 sub
Onkyo RC160

After running Audyssey all my speakers are set to "full range" and I have double bass on.

Now my question, should I use the crossover on the sub or let the RC160 control it? My front,center, and surrounds are listed as "full range" by Audyssey and do a fair job with bass but it seems my sub is coming in a little to early (long humming in some parts of a movie). I have not found a way to control the crossover frequency of the sub with the RC160.

Oh dear man you are gunna get hammered for that question LOL watch out for Bluesky No but seriously read up on basss management on Audyssey website and read through some of the older posts. You shouldnt have your speakers full range mate. Ill let the other guys enlighten you.
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post #21744 of 62257
12/21/09 at 9:12pm
Quote:
Originally Posted by Invictus 14 View Post

Oh dear man you are gunna get hammered for that question LOL watch out for Bluesky No but seriously read up on basss management on Audyssey website and read through some of the older posts. You shouldnt have your speakers full range mate. Ill let the other guys enlighten you.

I thought my response was to the point and quite gentle.

Quote:
Originally Posted by bluesky636 View Post

Read the Audyssey Setup Guide. But first, turn double bass off and never use it again.
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post #21745 of 62257
12/21/09 at 9:27pm
Quote:
Originally Posted by Blazer1 View Post

--------------------------------------------------------------------------------

My set-up;
4 TSC T -series Bookshelves 5.25"
1 T-series center dual 5.25"
Bic F-12 sub
Onkyo RC160

After running Audyssey all my speakers are set to "full range" and I have double bass on.

Now my question, should I use the crossover on the sub or let the RC160 control it? My front,center, and surrounds are listed as "full range" by Audyssey and do a fair job with bass but it seems my sub is coming in a little to early (long humming in some parts of a movie). I have not found a way to control the crossover frequency of the sub with the RC160.

Looking at the Onkyo RC160 manual, it appears to support Mult2Eq, so it will equalize the mains but not the sub itself. In the Advanced Speaker setup, you have a choice of Full range or of setting a crossover for the satellite speakers. So you set a crossover of, say, 80Hz by choosing this instead of Full range. bluesky636 has already suggested disabling double bass, which is in the same section of the manual.

At least that's my take on a quick scan. But I'm not an expert on Onkyos as I don't own one.
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post #21746 of 62257
12/21/09 at 9:30pm
I have read the Set-up guide,..I'm not sure I understand it? I guess the my mental block comes from purchasing rather large speakers capable of producing modest amounts of bass but not allowing them to? So I should set my speakers at 120Hz and let my sub handle 120Hz and below so that the receiver is not wasting valuable energy producing unnecessary bass with the "non sub" speakers, is this correct, have I got the crossover point correct?

The fact that I know very,very little about this subject causes me to rely heavily on Audyssey,..if it says "full range" I believe it.
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post #21747 of 62257
12/21/09 at 11:57pm
Quote:
Originally Posted by Blazer1 View Post

The fact that I know very,very little about this subject causes me to rely heavily on Audyssey,..if it says "full range" I believe it.

You need to do *some* sanity checks... if a speaker is speced at 80 Hz - 20 kHz,
I personally would not believe it would produce good output below 20 Hz which I think a "full range" speaker should do.
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post #21748 of 62257
12/22/09 at 12:05am
Quote:
Originally Posted by bluesky636 View Post

As Chris has stated on numerous occasions, neither CDs nor TV broadcasts are recorded at a standard reference level. Therefore, as the TV program average volume level changes, Dynamic EQ/Dynamic Volume tries to correct for the changes but without a standard reference level the correction is not always accurate.

ok, so what you are saying is that even the same show, after fast forwarding commercials, the volume can be different as the receiver tries to compensate? wow.
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post #21749 of 62257
12/22/09 at 7:51am
Quote:
Originally Posted by Blazer1 View Post

I have read the Set-up guide,..I'm not sure I understand it? I guess the my mental block comes from purchasing rather large speakers capable of producing modest amounts of bass but not allowing them to? So I should set my speakers at 120Hz and let my sub handle 120Hz and below so that the receiver is not wasting valuable energy producing unnecessary bass with the "non sub" speakers, is this correct, have I got the crossover point correct?

The fact that I know very,very little about this subject causes me to rely heavily on Audyssey,..if it says "full range" I believe it.

Audyssey never recommends Full Range when there is a subwoofer in the system. Unfortunately the AVR makers still think it's OK to set speakers to Full Range and they are in charge of making that decision. I have written about this here.

I'm not sure where the 120 Hz number that you mention came from. Perhaps the other industry confusion is causing it. 120 Hz is where the lowpass filter should be set for the LFE track. This is a separate 6th track in 5.1 content that is authored with content only up to 120 Hz. It is a mystery to me why manufacturers insist on providing a knob that allows you to change that to anything other than 120 Hz.

The crossover is something else entirely. That consists of a highpass and a lowpass filter at a frequency near the roll off point of each loudspeaker. The highpass filter passes the frequencies above to the speaker and blocks the low frequencies. The lowpass filter passes the frequencies below to the subwoofer and blocks the high frequencies. This pair of filters working together is the crossover.

I suggest setting it to 80 Hz and making sure that none of your speakers are set to Full Range.
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post #21750 of 62257
12/22/09 at 8:09am
Quote:
Originally Posted by bowmah View Post

ok, so what you are saying is that even the same show, after fast forwarding commercials, the volume can be different as the receiver tries to compensate? wow.

Sorry, that is not what I meant. I used "program" in a generic sense. I have heard significant volume changes between commercials and individual programs on the same channel. I have also heard changes between individual programs on the same channel. FInally, I have heard volume changes between channels.

Is that clearer?
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