Please Help me !!! (Part 2)

[scotties2006]

OK, for those of you who followed my first thread...this is a follow-up thread w/ more questions in regard to setup.

The Ref 52's, Onkyo & the RT10D sub are a huge improvement over the synergy line. Thanks to everyone who steered me in this direction. Better overall clarity, little to zero distortion, and no boominess out of the sub compared to the previous one. The SVS and the HSU subs may be better but to my untrained ears, this one rocks.

Now in regards to setup...the settings I have sound really good but there's alot to this stuff (at least to me) and I want to get the best sound possible. Here's what I have so far...

Fronts...set at Full Band
Center... 60Hz
Surround...60Hz
LPF of LFE...80Hz
Double Bass...Off


Left F...-4.0 dB
Center...-5.0 dB
Right F..-4.0 dB
Surr R... -7.0 dB
Surr L..._7.0 dB
Sub...-4.0 dB

Equalizer is set to Audyssey

OK, so take it easy on me...I'm kinda clueless in regards to this. However, any input would be greatly appreciated .

TIA


Scottie

 

[ParadigmDawg]

You need to get your mains set on small and cross them over too.

Read this:
http://www.avsforum.com/avs-vb/showpost.php?p=12162481&postcount=2

 

[agarwalro]

Left F...-4.0 dB
Center...-5.0 dB
Right F..-4.0 dB
Surr R... -7.0 dB
Surr L..._7.0 dB
Sub...-4.0 dB

Dont worry so much about this. It is the Audessy correcting the levels so that you have a calibrated setup. Since they are all in the negative, it means, with your receiver at "0dB" master volume, all speakers will need to play slightly softer to be at reference levels.

Fronts...set at Full Band
Center... 60Hz
Surround...60Hz
LPF of LFE...80Hz
Double Bass...Off

Now this is a concern. The fronts even though capable of full range audio playback, should be crossed over. Also, in your current config, the center, surrounds will get signal above 60Hz and the sub will play signal only below 80Hz. So on these channels, the 60-80Hz signal is lost. Generally, all your speakers should be set at the same cross over to prevent any "holes" in the frequencies played.

The best way to set the LPF and crossover is to keep it at the lower -3dB point of your weakest speaker.

So if your center and surrounds are rated 60 - 20,000Hz +/-3dB
and if your mains are rated 40 - 20,000Hz +/- 3dB

Set the LFE LPF at least 60Hz or more and set the corssover for ALL speakers the same.

THX setting is 80Hz and if the system is properly calibrated, this works for most setups.

I have no idea that the "Double Bass" setting implies here. 2 subs? If so, then set it to off.

 

[MDS]

'LPF of LFE' affects only the Low Frequency Effects channel (the '.1'); it does not mean that channels set to Small will never get any frequencies below 80 Hz if they are crossed over at a point lower than 80 Hz. The LFE can go as high as 120 Hz but most movies are mastered with only 80 Hz and lower frequencies in the LFE channel.

'Double Bass' sends the bass from the front channels to both the front speakers (they must be set 'Large') AND the subwoofer at the same time. The sub continues to play any bass below the xover for channels set to Small. Every receiver manufacturer offers this feature but it goes by different names.

 

[agarwalro]

'LPF of LFE' affects only the Low Frequency Effects channel (the '.1'); it does not mean that channels set to Small will never get any frequencies below 80 Hz if they are crossed over at a point lower than 80 Hz.

Correct. I did not mean to imply that, only meant that in my example, the 80Hz would be the "cutoff".

In any case, the receivers do not apply a HPF to the speakers. When they are set to "Small", the signal is rolled off at a slope of -12 0r -24dB/octave. Similarly, for the LFE, the signal between the cross over and LFP is sloped at the same rate.

Got this graphical representation from the internet...

 

[AVRat]

Now this is a concern. The fronts even though capable of full range audio playback, should be crossed over. Also, in your current config, the center, surrounds will get signal above 60Hz and the sub will play signal only below 80Hz. So on these channels, the 60-80Hz signal is lost. Generally, all your speakers should be set at the same cross over to prevent any "holes" in the frequencies played.

Wrong, there is essentially an overlap and a peak in the frequency response may result.

 

[agarwalro]

Wrong, there is essentially an overlap and a peak in the frequency response may result.

Oh! I see my error.

The the LFE will roll off signal > 80Hz.
The slope on the speaker set to small will cause a roll off < 60Hz.

The combination of the two will cause a small peak in the 60-80Hz region.

I suppose the effect I eluded to will potentially occur only if the speaker setting is > LFE setting, say for example,

LFE crossover 50Hz and speaker crossover 100Hz.

And definitely occur if they are LPF and HPF settings respectively.