This will be a rather longer post to give some background.
In a nutshell, what I'm seeking is alternatives to the miniDSP DDRC-22D. I have nothing against the DDRC-22D, but usually I like more than one option when considering a purchase.
If you choose to read further, I would appreciate any comments on what I'm about to say. I need to know that I'm getting this more or less right and where there might be weak points in my pursuit of audiophile music reproduction on a Honda Civic budget.
My 2.1 audio setup has a NAD C390DD 'all-digital' amp at it's core. The signal path I'm currently using is:
Digital source > Raspberry Pi w/ MusicBox > HiFiBerry Digi+ > MiniDSP nanoDIGI > NAD C390DD > Axiom M80 x 2 + SVS 12 sub
I've been experimenting with REW to do room EQ with pretty good success. The C390 has 6 EQ filters at fixed frequencies ranging from 40 hz to 240 hz each -12 dB to +4 dB. Using REW, I set those filters as REW specified with a crossover at 70 hz (I think) sweeping 20-300. Then I did a second run of REW to calculate parameters for the nanoDIGI sweeping 80-8000. The nanoDIGI has 5 parametric EQ parameters. I used that sample to generate 4 configs for the nanoDIGI having house curves of -1.8, -2.0, -2.2 and -2.4 dB/octave.
Here's where I've arrived, showing the 2.2 dB/octave setting.
I like what I'm hearing, but I don't have much experience with this room EQ activity. I think if I am to pursue room EQ beyond where I am now, I will need more and/or better matched filter options than I have now.
From what can see, people who've been doing this for years would have been in the analog domain until the equalization stage where they would use say a BFD to go analog-digital_EQ-analog and on to analog amplification.
Obviously with my setup, I stay digital throughout and don't want to (nor can I) drop down to analog just to match the inputs to an EQ.
I think the miniDSP DDRC-22D is one device that would serve.
Does anyone have experience with the DDRC-22D
that they would like to share?
Does anyone know of alternatives to the DDRC-22D
Thanks for listening. I look forward to comments.
Happy Holidays All !