Denon 3805 and LFE

georgep · Jun 10, 2006

Does anyone know if there is way to get LFE to go to the fronts (set as large) as well as to the subwoofer. When using the LFE sweep on Avia I can only get sound through the subwoofer.

Thanks.

nova · Jun 10, 2006

georgep said:
Does anyone know if there is way to get LFE to go to the fronts (set as large) as well as to the subwoofer. When using the LFE sweep on Avia I can only get sound through the subwoofer.
Thanks.

Yes, in your speaker setup>speaker config> set front to large, then in speaker setup>subwoofer mode setup select LFE+Main

georgep · Jun 10, 2006

That is how I have it set up, but in with the Avia DVD I do not get any LFE out of the fronts - am I missing something? The DVD signal to the 3805 is digital and the fronts go down to 35hz.

mtrycrafts · Jun 10, 2006

georgep said:
That is how I have it set up, but in with the Avia DVD I do not get any LFE out of the fronts - am I missing something? The DVD signal to the 3805 is digital and the fronts go down to 35hz.

Have you tried to send the same test signal but turning down the sub itself or even unplugging it to see if the mains make any sound?
Just because it is rated to 35Hz, doesn't mean it will output enough down there to hear it well.

georgep · Jun 10, 2006

Yes, I tried that - no sound is output at all, and the Avia test starts at 100hz. And yes, the speakers will go down to the mid 30s - they will do it on the right and left bass tests.

So I am still not sure if I have set up the 3805 properly. Any other suggestions?

MACCA350 · Jun 10, 2006

Read the bottom of page 37 of your manual. This explains how the different modes of LFE work.

If you have Subwoofer set to YES then only the sub will get the pre-recorded LFE/.1 information.

The LFE+MAIN option allows you to have the sub play LFE/.1 information and bass below the Xover point for all speakers set to small(as usual) as well as those set to LARGE(the bass for those channels set to LARGE will also be played through those speakers but not the specifically recorded LFE/.1 information)

The only way to have your mains play the recorded LFE/.1 information is to set the Subwoofer to NO and have your main channels set to LARGE.

You would be surprised at how little information is actually recorded on the LFE/.1 DD channel, most of the bass is in the other speaker channels themselves.

cheers

bobby9858 · Jun 10, 2006

Can Someone Please Help Me With My 3805?

Can someone help me figure this out? I have Little to No sound coming out of my Powered Sub with Everything Turned up as high as it will go on the Sub.
I am New to the 3805, but I have my Powered Sub hooked up to the Sub Output on the Receiver, and Yes in the Menu where it ask about the Sub Yes or No.
I have checked the channel adjustment to check the Sub Level. No I didn't use the Room EQ with the setup mic. (I don't have a mic.), Plus I heard it didn't do a very good job.
My Sub is a Pretty Big Sub with Lots of Bass, so I don't know what the problem is?
I did notice if I turned Everything on the Sub to as High as it would go, And turned the Volume up All the way on the 3805 I could faintly hear a little out of the Sub, but very little.
I have tried the Speakers on small, and Large.
The Crossover is set to 80Hz right now, but I tried setting it from 80 to 200Hz, but it helped Very Little if at all even at 200Hz.
Also right now the Sub is on LFE + Main, But I tried it on just LFE with No Luck.
Sub level is set at +15.
I just bought this 3805 used, and the seller said Everything was perfect when he shipped it??? I am not sure if he is telling the truth now :-(
I had a Electronic Store guy come over, and he said that it looked like the Sub Woofer Line Output, Center Line Output, R & L Front Line Output, and Both Surround Line Outputs were not working? I don't understand this
It has to be the Receiver, doesn't it?

One other problem I have is with the Remote, it keeps Freezing up on me, has anyone had this same issue? Thanks Everyone!

georgep · Jun 10, 2006

Yes, thanks. I had read p. 37 a few times - it is not exactly clear, but my experience reflects what you are saying: LFE cannot be played from mains set to large when a subwoofer is in the mix.

MDS · Jun 11, 2006

LFE always goes to the sub if you tell the receiver that a subwoofer exists. If subwoofer=No, then LFE will go the Large speakers. Macca350 explained the LFE+MAIN setting - LFE will still go to the sub but bass below the xover that is destined for the Large channels will ALSO go to the sub.

shokhead · Jun 11, 2006

bobby9858 said:
Can someone help me figure this out? I have Little to No sound coming out of my Powered Sub with Everything Turned up as high as it will go on the Sub.
I am New to the 3805, but I have my Powered Sub hooked up to the Sub Output on the Receiver, and Yes in the Menu where it ask about the Sub Yes or No.
I have checked the channel adjustment to check the Sub Level. No I didn't use the Room EQ with the setup mic. (I don't have a mic.), Plus I heard it didn't do a very good job.
My Sub is a Pretty Big Sub with Lots of Bass, so I don't know what the problem is?
I did notice if I turned Everything on the Sub to as High as it would go, And turned the Volume up All the way on the 3805 I could faintly hear a little out of the Sub, but very little.
I have tried the Speakers on small, and Large.
The Crossover is set to 80Hz right now, but I tried setting it from 80 to 200Hz, but it helped Very Little if at all even at 200Hz.
Also right now the Sub is on LFE + Main, But I tried it on just LFE with No Luck.
Sub level is set at +15.
I just bought this 3805 used, and the seller said Everything was perfect when he shipped it??? I am not sure if he is telling the truth now :-(
I had a Electronic Store guy come over, and he said that it looked like the Sub Woofer Line Output, Center Line Output, R & L Front Line Output, and Both Surround Line Outputs were not working? I don't understand this
It has to be the Receiver, doesn't it?

One other problem I have is with the Remote, it keeps Freezing up on me, has anyone had this same issue? Thanks Everyone!

Cabler plugged into the right place on the sub?

bobby9858 · Jun 11, 2006

Yes, the Sub only has 2 RCA input, so the Cable is plugged into the Sub

Malice · Jun 11, 2006

Have you used the denon speaker level setup option to see if the sub's volume is the same or not with the amp's internal test tone (as opposed to the Avia)?

Occasionally I get no sound from my sub at all and I usually find that unplugging and re-inserting the RCA connector (amp switched on but sub switched off) brings it back to life.

Failing that, try resetting the processor.

15 INITIALIZATION OF THE MICROPROCESSOR
When the indication of the display is not normal or when the operation of the unit does not shows the reasonable result, the initialization of the
microprocessor is required by the following procedure.
1 Switch off the unit using the main unit’s power operation
switch.
2 Hold the following PURE DIRECT button and DIRECT button,
and turn the main unit’s power operation switch on.
3 Check that the entire display is flashing with an interval of
about 1 second, and release your fingers from the 2 buttons
and the microprocessor will be initialized.
NOTES:
• If step 3 does not work, start over from step 1.
• If the microprocessor has been reset, all the settings are reset
to the default values (the values set upon shipment from the
factory).

Nick250 · Jun 11, 2006

Great suggestion. I had to do that on my 3806 once. Start from a clean slate.

bobby9858 · Jun 11, 2006

Hello Malice

I have been into the speaker level setup. Since I am New to Denon Receiver's (3805) I don't understand completely what you mean when you ask: (Have you used the denon speaker level setup option to see if the sub's volume is the same or not with the amp's internal test tone (as opposed to the Avia) - Can you explain this a little more to me, I might have already done this, but I am not sure.
I have tried unplugging the RCA Connecter, and then re-inserting them, that didn't help.
I have not done the INITIALIZATION OF THE MICROPROCESSOR.
I have a couple of questions about this. 1. The display is fine, I really hate to do this Unless it will fix the Sub Problem, can doing this Fix the Problem? 2. Since I bought the 3850 used, and the seller said Everything work perfect, shouldn't it still be that way, since nothing has changed?
Thanks for your help, and I look forward to hearing back from you! Thanks

mtrycrafts · Jun 11, 2006

MACCA350 said:
You would be surprised at how little information is actually recorded on the LFE/.1 DD channel, most of the bass is in the other speaker channels themselves.

cheers

A friend can monitor the power to a passive sub on the LFE. You would be amazed how much it is getting. Seems to be there most of the time and the power can be awesome at times.

bobby9858 · Jun 11, 2006

I just checked the speaker level setup option to see if the sub's volume is the same or not with the amp's internal test tone - I did manual, and All Speakers Including the Sub is the same, All have 0.00db assigned next to them, is this normal, are they suppose to be at 0.00db?
I am still not sure what you mean by - (See if the sub's volume is the same or not with the amp's internal test tone (as opposed to the Avia)?
Thanks Bobby

MACCA350 · Jun 12, 2006

mtrycrafts said:
A friend can monitor the power to a passive sub on the LFE. You would be amazed how much it is getting. Seems to be there most of the time and the power can be awesome at times.

Is that pre or post bass management? I was just analyzing the individual channels of War of the Worlds. 20min in(emerging Tripod scene) there is more bass in the mains then there is in the LFE channel, in fact the LFE channel hardly reaches below 20Hz when the mains hit peaks at 10Hz. I'd call that surprising. When you look at ID4 the LFE has almost no information stored on it in comparison to whats in the other channels as far as bass is concerned.

It just reiterates the need for decent bass management.

Bobby said:
I am still not sure what you mean by - (See if the sub's volume is the same or not with the amp's internal test tone (as opposed to the Avia)?

See page 34-36 of the manual, It explains how to use the receivers internal test tones.

cheers

PENG · Jun 12, 2006

bobby9858 said:
Hello Malice

I have not done the INITIALIZATION OF THE MICROPROCESSOR.
I have a couple of questions about this. 1. The display is fine, I really hate to do this Unless it will fix the Sub Problem, can doing this Fix the Problem? 2. Since I bought the 3850 used, and the seller said Everything work perfect, shouldn't it still be that way, since nothing has changed?
Thanks for your help, and I look forward to hearing back from you! Thanks

As Nick said, it is a great idea to do the initialization. It reset everything to factory default conditions. There is nothing to lose. The receiver may work perfectly for the seller, but something could have happened since. Before you plug/unplug those RCA's you need to turn off the amp and the subwoofer first, especially the sub. If not, you could damage your sub.

Initialization of the microprocessor will fix your problem only if the problem was due to one or more wrong settings. If you do it, it would at least eliminate one potential problem.

Nick250 · Jun 12, 2006

Not to beat this to death (more than we already have), but if I had purchased a used receiver of any make or model, the very first thing I would do before anything else would be to reinitialize. You start with a clean slate as I mentioned previously. The reinitialization process will make the settings exactly as they were when the receiver was brand new and in the box. This is a very good thing. Who knows what odd or off the wall settings the previous owner made. As Peng mentioned, there is no down side this only up.

shokhead · Jun 12, 2006

bobby9858 said:
I just checked the speaker level setup option to see if the sub's volume is the same or not with the amp's internal test tone - I did manual, and All Speakers Including the Sub is the same, All have 0.00db assigned next to them, is this normal, are they suppose to be at 0.00db?
I am still not sure what you mean by - (See if the sub's volume is the same or not with the amp's internal test tone (as opposed to the Avia)?
Thanks Bobby

Get a spl meter and set the thing up right. It sounds like your just not sure about any of the setup being right or wrong. It has an auto setup but you need a mic and i cant remember if the 3805 comes with one so get a spl meter and set it up. Master volume at 0,all speakers to small,set to 75db and the sub at 80db and go from there.

Denon 3805 and LFE

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