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DSP Crossover Help, Please.

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charles0322:
I have a Focusrite Clarett 8 pre, MC 22, Mac

I would like to use MC to route my 4 way analogue system. output 1-2 for sub, 3-4 for mid-low, 5-6 mid high, 7-8 for highs..

I have created crossover slopes within MC, but how do you configure them to your soundcard/dac outputs?

I am a mac user, the GUI for MC is very confusing to me LOL, it is an incredibly powerful and useful program so I dont need fancy graphics, I just need a hand to configure and cant find a relevant tutorial really.

Thanks, Merci!

charles0322:
In case anyone else is having the same issue. It seems the use of a 3rd party VST is used with JRiver to separate the outputs using your selected crossover points.

I would appreciate any help on implementing the VST and finding the one that can achieve a 4 way stereo system..

There is a program I have found called Allocator but it like JRiver has limited support. :-\

blgentry:
You don't need a VST for this I don't think.  You should do some searches for active crossover with DSP in this forum.  You won't find a complete guide, but you'll find lots of information.

What you need to do, as a general outline is:

1.  In DSP > Output format set your number of channels to be the number of channels you will use on your external multi-channel DAC.  You probably need to turn off JRSS downmixing and you might need to select "2 channels inside a 5.1 channel container".  Not sure about this.
2.  In DSP > Parametric EQ, duplicate Left and Right to the additional channels.  That way you have a copy of L and R to work with on each of your channel pairs.
3.  In DSP > Parametric EQ , apply high pass and/or low pass filters to each of your channels to remove what should not be there.  For example, a high pass filter at 5,000 Hz for your tweeter (high) channels.

Personally, I wouldn't use MC for this.  MC CAN DO IT FOR SURE!  I just wouldn't do it because of the complexity.  I'd use something like a miniDSP product which is easier to configure.  But that's just my opinion.

You might get more help with this question on one of the other forums here.  Maybe the Windows forum, or maybe the Sound Cards and DACs forum.

Good luck.

Brian.

charles0322:
I would use an Ashly Crossover but if I have the 8 channel soundcard and can configure this way it saves me buying anything else.

I pretty much set it up the way you said.. but there is something Im missing. I have searched all threads on this topic. Not one has screen shots EVER. Especially with everyone using different home theatre styled amps over HDMI..

mojave:
With JRiver this is super easy and logical.

Set Output Format > Channels to 2 channels (inside 7.1 channel container)
If all your content is just 2 channels . . . set Mixing to No upmixing or downmixing
If you will also play multi-channel content . . . set Mixing to JRSS Mixing and Subwoofer to JRSS Subwoofer (120 Hz low-pass)


You want 1,3,5,7 for your left speaker and 2,4,6,8 for your right speaker. JRiver's channels are in this order
1 - Left
2 - Right
3 - Center
4 - Subwoofer
5 - Rear Left
6 - Rear Right
7 - Surround Left
8 - Surround Right

First you need to copy channels.
Toggle on Parametric Equalizer and use Mix Channels to copy channels. You should also level adjust in the copy channels. Use a negative number to attenuate drivers.

Add your high pass filters to the left speaker (left, center, rear left, surround left) and right speaker (right, subwoofer, rear right, surround right)
Add your low pass filters to the left speaker (left, center, rear left, surround left) and right speaker (right, subwoofer, rear right, surround right)
Finally, use Delay to time align all the channels based on your measurements. Your highest frequency channels (SL, SR) will need no time alignment, but the other channels probably will.

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