Helix RTA & Auto EQ - A Car Audio Junkies Exclusive

SkizeR said:
Pretty sure it's only for the input signal, no?

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I think you're right but I would think it wouldn't be hard to update their software to look at either the input signal or a mic connected to the laptop the user is viewing their RTA on, hmm....I don't think the hardware in the DSP/Amp would need to change not that I really know any better...
 
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If you have the Helix DSP Ultra which has Virtual Channel Processing, you can Autoset your individual drivers in the Output section then Autoset the whole left or right in the Virtual section which is kind of a game changer. You can EQ your individual drivers Flat in the Output section then EQ to your House Curve in the Virtual section. Gives you 31 bands for each driver plus another 31 bands each for FL Full, FR Full, RL Full, RR Full, Front Center Full, Rear Fill Full, and Subwoofer 1 & 2.

Nick, you're really just scratching the surface of possibilities in your video. There's so much more you can do when you can EQ Outputs and Virtual Channels if you have the Ultra.

The Set EQ button will set the EQ based on a 1 time measurement, the Autoset button will continuously measure and adjust until you manually stop it.
 
So, I've been using the Helix DSP Ultra recently, and am enjoying it thus far. I also recently had the opportunity to add a center midrange and center tweeter to give me a 2-way center channel. I am a relative novice when it comes to tuning, but believe I have the basics down fairly well. As I've never used a center channel before, what approach would folks here recommend? I'm thinking of using the autoeq function for the left side and then right side, as Nick has demonstrated here, and then autoeq the center channel speakers separately. Do folks think this approach would work better then auto-eq'ing the left with the center-channel simultaneously and then the right side with the center channel simultaneously? Not sure if it would produce the same result or not.

Thoughts, recommendations?
 
olys6 said:
So, I've been using the Helix DSP Ultra recently, and am enjoying it thus far. I also recently had the opportunity to add a center midrange and center tweeter to give me a 2-way center channel. I am a relative novice when it comes to tuning, but believe I have the basics down fairly well. As I've never used a center channel before, what approach would folks here recommend? I'm thinking of using the autoeq function for the left side and then right side, as Nick has demonstrated here, and then autoeq the center channel speakers separately. Do folks think this approach would work better then auto-eq'ing the left with the center-channel simultaneously and then the right side with the center channel simultaneously? Not sure if it would produce the same result or not.

Thoughts, recommendations?
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I would auto eq the center just as you do any other section like left front and right front. Then go to Virtual Channels and auto eq the whole setup in Virtual, that way you won't affect any of the phase, eq or other processing that you did on the individual output channels.
 
dobslob said:
I would auto eq the center just as you do any other section like left front and right front. Then go to Virtual Channels and auto eq the whole setup in Virtual, that way you won't affect any of the phase, eq or other processing that you did on the individual output channels.
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Thanks! I hadn't considered using autoeq on the virtual channels. I've been using it on the outputs.

Forgive the newbie question, but as a stepwise approach, set up time alignment and output levels for each channel, then eq each channel in outputs, and then eq the whole setup in virtual?

Also, for my center tweeter and center mid, I'm creating the center channels in virtual by using 50%left and 50%right for each channel.

My fronts are all Hybrid Audio X1 tweeters and x3 midrange speakers (the same for left, right, and center) that all have the same frequency response.

Does this sound like a reasonable approach?

Thanks in advance,

Andre
 
Literally just signed up to give kudos to Helix and Nick. I'm using a dsp.2 with a 5 channel arc audio amp running a 12w3, sb-sb26stcn-4, and rs180. A couple of minutes and it sounds pretty damn good.
 
Well thank you for making this, this helped a lot.
I was getting a bit worried tuning this thing would be harder than I thought, but with the help of this video, and your others, my system is sounding great now!

Couldent vinyl wrap the tweeter pods though, turns out i dont know how to do that well.
 
spwath said:
Well thank you for making this, this helped a lot.
I was getting a bit worried tuning this thing would be harder than I thought, but with the help of this video, and your others, my system is sounding great now!

Couldent vinyl wrap the tweeter pods though, turns out i dont know how to do that well.
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Send me pics of em

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olys6 said:
So, I've been using the Helix DSP Ultra recently, and am enjoying it thus far. I also recently had the opportunity to add a center midrange and center tweeter to give me a 2-way center channel. I am a relative novice when it comes to tuning, but believe I have the basics down fairly well. As I've never used a center channel before, what approach would folks here recommend? I'm thinking of using the autoeq function for the left side and then right side, as Nick has demonstrated here, and then autoeq the center channel speakers separately. Do folks think this approach would work better then auto-eq'ing the left with the center-channel simultaneously and then the right side with the center channel simultaneously? Not sure if it would produce the same result or not.

Thoughts, recommendations?
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Interesting problem to solve. I'm following closely because I plan to do something very similar in the next few weeks.

Question: Why did you chose to use a midrange and a tweeter for the center channel? Did you find just using a midrange was not enough?

Ge0
 
So like another guy said earlier, just joined this forum so i could give Nick a thanks for this video.

Been watching your other tutorials Nick, and slowly learning the REW process, but I'm having limited success.
Re-tuned at the weekend using Kyle Ragsdales videos... and its still not as good as it should be.

I cant wait to try this method !!!


Thanks again for all the help you put out there:peace:
 
Just a quick one, if doing this from step one, if you eq a single sub separate (ie you only have a single sub) and then with a single side (l or r) don’t forget to drop the sub by 6db and then if you play the two sides together add back the 6db for the sub... reason being in theory at least the two sides will sub by 6db so you will find your sub is 6db light if you don’t do this
 
Ge0 said:
Interesting problem to solve. I'm following closely because I plan to do something very similar in the next few weeks.

Question: Why did you chose to use a midrange and a tweeter for the center channel? Did you find just using a midrange was not enough?

Ge0
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No, it was mostly because a) I could, since the Helix Ultra allows for it and makes it easy, and
b) I imagined it might make it easier to pursue a 2 seat tune

I've since scrapped the idea of a 2 seat tune, but having the 2-way center channel has made my overall tune sound great.
 
olys6 said:
No, it was mostly because a) I could, since the Helix Ultra allows for it and makes it easy, and
b) I imagined it might make it easier to pursue a 2 seat tune

I've since scrapped the idea of a 2 seat tune, but having the 2-way center channel has made my overall tune sound great.
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could please let me how you did yours because thats what mine is with helix mini.
 
dobslob said:
I would auto eq the center just as you do any other section like left front and right front. Then go to Virtual Channels and auto eq the whole setup in Virtual, that way you won't affect any of the phase, eq or other processing that you did on the individual output channels.
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Perhaps I have no idea how to properly use virtual channels. I have

FR L tweet, FR L midrange, and FR L midbass tied to Virtual Channel A
FR R tweet, FR R midrange, and FR R midbass tied to Virtual Channel B
Center midrange on Virtual channel E (primarily to activate real center)
Rear fill on Virtual channel F (input 50% L, 50% -R)
Sub on Virtual channel K?

How do I auto EQ this whole setup in virtual channels? Link them all together like outputs? I'm unclear of the advantage to doing this.

Ge0
 
Ge0 said:
Perhaps I have no idea how to properly use virtual channels. I have

FR L tweet, FR L midrange, and FR L midbass tied to Virtual Channel A
FR R tweet, FR R midrange, and FR R midbass tied to Virtual Channel B
Center midrange on Virtual channel E (primarily to activate real center)
Rear fill on Virtual channel F (input 50% L, 50% -R)
Sub on Virtual channel K?

How do I auto EQ this whole setup in virtual channels? Link them all together like outputs? I'm unclear of the advantage to doing this.

Ge0
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Virtual channels ? Hmmm where’s that at ?


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Optimaprime said:
Virtual channels ? Hmmm where’s that at ?


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Click to expand...

If you have a newer DSP with their Advanced Co-processor (ACO) functions then virtual channels can be activated through the DCM menu tab.

This is a way to link channels together and mess with them without affecting the tuning you did in the OUTPUTS section. This is also where you can activate their new gimmick effects like stage ex-pander and bass effects. So far I find it somewhat useful but extremely limited.

Ge0
 
The virtual channels feature is not available on all ACO-based DSP's. It's not available on the mini or the DSP.3. Only on the Helix Ultra and I think one of the newest DSP+Amp combo devices.

So you cannot use virtual channels on the DSP Mini (even though it's an ACO-based DSP).

However, the "FX" options *are* available on ALL of the ACO-based DSPs. So you *can* use features like Augmented Bass Processing, Real Center, etc on the DSP Mini.

Hope that clears things up.
 
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