PEQ per channel with subwoofer?

[adisano]

First of all, I apologize for any mistakes as English is not my native language.

Let's assume I set the PEQ separately for the left and right channels, using 5 bands on the left and 5 bands on the right channel. Can the remaining 10 bands (5 on the left channel and 5 on the right) be used exclusively for subwoofer correction? Or does it work differently?

 

[harkpabst]

If you perform PEQ manually you always have 10 bands per channel in total. Only you decide in which frequency range to use them (above subwoofer crossover frequency or below).

If you use the automatic room correction process then filters will be applied to the frequency range chosen for correction, but subwoofer out and automatic left/right RC is still not supported at the same time (if I remember correctly from the top of my head).

There is no way (and in my view no need) to explicitly limit PEQ bands to sub only or mains only.

 

[adisano]

So if I, lets say, use -10 dB on 50 Hz band on the left channel and -10 dB on the right channel, it sums it up to total -20 dB below crossover?

 

[hgo58]

So if I, lets say, use -10 dB on 50 Hz band on the left channel and -10 dB on the right channel, it sums it up to total -20 dB below crossover?

I would expect it to be the average, as the sub is the mono signal derived from both channels ((R+L)/2). Of course depending on what channel is playing the 50 Hz.

So for your example, it would still be -10 dB.

 

[jdjd1]

I would expect it to be the average, as the sub is the mono signal derived from both channels ((R+L)/2). Of course depending on what channel is playing the 50 Hz.

So for your example, it would still be -10 dB.

so imagine I only add lets say a PK filter of 30hz with Q of 10 with -12 db only to left channel and then nothing about 30 hz on right channel will that make it a -6db with Q of 10 at 30hz (12/2) or 0 since anything divided by 0 = 0, I'm asking cause then I could effectively double the bands for sub EQ'ing.

 

[rccarguy]

Ideally you want to have three channels of PEQ, left, right and subwoofer.

So if you adjust each channel independently of each other.

With AV gear, you can do this, on my AV pre amp I'm using the left and right channels with their own PEQ filters. Subwoofer is enabled but not using any of the PEQ filters on the subwoofer output. But then I have a minidsp, so that is used to phase align all subwoofers - then apply PEQ to the summed subs. That is the ideal method .

 

[jdjd1]

yes but my question is with wiim ultra how does the peq of left / right apply to sub out.

 

[jdjd1]

so imagine I only add lets say a PK filter of 30hz with Q of 10 with -12 db only to left channel and then nothing about 30 hz on right channel will that make it a -6db with Q of 10 at 30hz (12/2) or 0 since anything divided by 0 = 0, I'm asking cause then I could effectively double the bands for sub EQ'ing.

I think after doing some tests if you apply a PK PEQ filter at 30 hz of -6db in left channel and right channel it is -6db result
If however you apply a -12 db to left channel and not right channel it will apply a -6db at 30 hz with whatever Q it is so the Q remains unaffected.
This is good as you can actually increase number of bands available although the max -/+ db that band must be is 6 since wiim is capped at +/- 12 db gain.

 

[rccarguy]

yes but my question is with wiim ultra how does the peq of left / right apply to sub out.

If applying PEQ to L/R effects subwoofer out, that's pretty bad , as ideally needs to be a seperate channel not just a downmix.

Easy to test, apply a cut at 30hz on left, a peak at 80hz on right, and do frequency responses on subwoofer with PEQ on and off.

If true then better to look for a AV product, a av pre amp or something. that way you have choice of using L and PEQ on or off, subwoofer PEQ on or off, and neither effects the other.

 

[slartibartfast]

If applying PEQ to L/R effects subwoofer out, that's pretty bad , as ideally needs to be a seperate channel not just a downmix.

Easy to test, apply a cut at 30hz on left, a peak at 80hz on right, and do frequency responses on subwoofer with PEQ on and off.

If true then better to look for a AV product, a av pre amp or something. that way you have choice of using L and PEQ on or off, subwoofer PEQ on or off, and neither effects the other.

He wants PEQ below the crossover to affect subwoofer out. He wants to gain more filters by applying each one to a single channel. The left and right channel.are combined on the the subwoofer output so it will work. I think you might have missed the point

 

[rccarguy]

He wants PEQ below the crossover to affect subwoofer out. He wants to gain more filters by applying each one to a single channel. The left and right channel.are combined on the the subwoofer output so it will work. I think you might have missed the point

Yes I'm aware of that, however crossover for speakers isn't a brick wall so it will be effecting speakers response to some degree.

I do the opposite, make sure I apply PEQ to the speakers that are above the subwoofers response so it doesn't effect it too much >120hz-400hz correction

 

[jdjd1]

J

Thread 'Indepedent PEQ bands for SUB OUT and setting different crossover at sub out page for mains only (subs have internal amps)'

Tuesday at 9:58 AM

So I was tuning my system and I noticed my speakers are actually good from 60 to 120 hz where the sub is good but it has some dips which can't be fixed due to room.

So I bypassed speakers and subwoofer in sub out page and use internal subwoofer amp for its crossover and the 3 peq bands it has. then I went onto the LEFT and RIGHT speakers individually, so I could EQ them , but I also had to use the first PEQ bands of LEFT and RIGHT to EQ SUB cause I really needed 6 bands for Subwoofer.

Problem:

EQ for subwoofer is affecting speakers, and EQ for speakers is affecting Subwoofer.

Please...

• jdjd1
• Replies: 22
• Forum: Feature Requests for WiiM Ultra