Subwoofers and Crossovers.

@m-db I am not getting the CR-1, so whatever signature the SHD leaves, it will be across the spectrum.

SHD looks very flexible and I am seeing myself setting two crossovers one at around 110/120 for general purpose and one around 170/180 for female vocals; there are four presets in SHD. This would have been almost impossible with CR-1 as a change in crossover frequency means new phase alignment.

such a crime to high pass the Spendors but I do hope it works out for you. difficult for any sub to keep up with them.  

@avanti1960 , my main aim in high passing the Spendors is to eliminate intermodulation(amp) and doppler distortion(speakers). I will also be setting one of the presets to disable the subs and run Spendors full range.  I will post my experience in this thread. 

Also, I have been reading such good things about bi-amping and adding subs with high passing the mains is another form of bi-amping.

PS. In this journey, I read your subwoofer threads in the other forum.

Yes, thank you.  I have learned a lot in my journey!   

Some speakers work well with the right subs, some do not, and ultimately if you value speed, dynamics and lightening burst timing no subs are best.  

Not everyone values that however.  

Good luck! 

I had Rythmik FM8s and miniDSP SHD delivered by Saturday and have been fiddling with REW and miniDSP software until now. The subs are flanking the Spendors on the inside.

Myt steps in setting them up.

1. Level matching the subs to the mains. Initially I put them one notch above zero, but dialed them back to zero.

2. Measured subs and the mains one channel at at time at different crossovers ranging from 80 to 150. Left channel was fine all across, but the right channel was not performing well between 100 and 120. So I had to choose either 90 or 140/150 and I decided to cross them over at 150 with 24db/octave.

3. Time delaying the mains was the most time consuming step, as I had to learn the process. After several measurements and methods, the results I had was 7.5ms for the left and 7ms for right channel.  I decided to set both of them to 7.5ms

4. Finally ran Dirac Live to flatten the response curve with a little boost in the bass area.

I am going to leave it with these settings for some time.

I am noticing two immediate benefits:1. There is more bass with more texture and the drum beats have a sharper starts/stops. 2. Vocals are clearer without being effected by base notes.

I am grateful  to the forum members for all the help and guidance.