Notwist_tsiwtoN
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After you setup the crossover, does Motu still need to be connected to the PC, are the settings stored in Motu or in the software on PC? Can I turn the PC off and use another source while crossover still being active?WARNING: I am assuming that you have played around with digital or active analogue crossovers before, and that you are familiar with the characteristics of your drivers (optimal bandwidth, power handling, etc.). Accidentally low-passing a tweeter with a high power beyond its capabilities may permanently damage it.
I'm going to take you through how I set up the active crossovers in my office system. The chain is:
Music Server (with Roon Core) -> ethernet -> Win 10 PC (with Roon Bridge) -> USB -> MOTU UltraLite-mk5 -> 6x Neurochrome 286 mono amps -> 3-way speakers
The speakers are a pair of old Impulse H2s, popular in the UK in the '90s. They are particularly good for going active because they have 3 sets of binding posts on the rear. They have a recessed horn-loaded mid, and a rear horn-loaded bass. Roon's DSP allows time alignment, which I found particularly useful.
I've ripped out the internal passive crossovers, and have hardwired each driver to a pair of binding posts. So, each mono amplifier's output is connected directly to a driver.
1. Set up channel mix
Here, you assign the 2 input channels to the DAC's output channels:
View attachment 178538
View attachment 178539
I have assigned input channel 1 to the UltraLite's output channels 1, 3, 5, 7, and input channel 2 to the UltraLite's output channels 2, 4, 6, 8. I have reserved output channels 1 and 2 for headphone listening, where I want to bypass the crossovers.
Also, you can see that I'm level-matching by setting the gain/attenuation for each driver. I've determined this by measuring each driver nakedly using a 20Hz-20kHz sweep. You may have you own preferred way of doing this (e.g., REW, etc.).
2. Set up LF channel
Set up the low-pass filter:
View attachment 178543
Assign to output channels 3 and 4:
View attachment 178544
3. Set up mid channel
Set up pass-band:
View attachment 178545
View attachment 178546
Assign to output channels 5 and 6:
View attachment 178547
4. Set up HF channel
Set up high-pass filter:
View attachment 178548
Assign to channels 7 and 8:
View attachment 178549
5. Set up time delays
View attachment 178550
And that's pretty much it! Feel free to ask questions.
And the end result (taken with my old phone, so not great SQ quality):
Mani.
Also I have an ADI-2 PRO, can I: PC->ADI-2->MOTU->Speakers&Sub, can I still record guitar on my PC when it's set this way?
Thanks much in advance. Sorry if the questions are a bit silly, I don't know much about it.