Thanks @audiorusty, there seems to be no shortage of RCA crossovers and XLR crossovers but not many that have both. The only ones I've found are by JL Audio and SPL and both are fairly pricey. The DBX seems to be XLR only unless there's one I'm missing.
I'm so glad I posted this thread because I've learned a ton. (You're not the only one @larry5729! Thank you @erik_squires @mapman @onhwy61 @mrdecibel @noble100 @yyzsantabarbara and everyone else!)
I have about an hour of listening with the MiniDSP. The setup was straightforward enough. I set the high pass filter for the mains at 90hz and the sub low pass at the same. The sub has its own LPF. The HPF I had to set using the MiniDSP software installed on my Mac. Once I had the software synced with the unit, which took about five seconds, I was able to set the high pass. Couldn't have been easier. I'll have to play around with the crossover point but a few observations so far.
The amp is obviously not working as hard as before. I can reach the same SPL at a lower volume on the DAC (which doubles as my preamp). With the JL sub going up to 90hz, the bass is tighter and more finely detailed. I've been listening to an album called Wood by Brian Bromberg. He plays a 300-year old double bass with a lot of slapping, sliding and plucking techniques, which gives you a good taste of transient detail and the excellent character of the 18th century bass. There's a lot of it with the JL going up to 90hz and with the Magico Minis rolling off earlier. And there was a lot of detail already there before. But now, it's even more three-dimensional. It's the same thing with a Charlie Haden/Jim Hall album that's been on heavy rotation, where the bass articulation just jumps out of the soundstage.
I'm not sure if it's the mains not having to extend down to 40hz or the extra headroom from the amp not having to drive the mains that low, or maybe a combination of the two, but the DSP makes both the sub and the mains sound better, and the whole system more resolving. Brad Mehldau's piano from a 1990 Art of the Trio live recording sounds slightly smaller than another Art of the Trio recording from 1997, and both pianos sound smaller than Chick Corea's on Trilogy 2. I've listened to all three albums many times and never noticed the difference in the apparent size of the piano. Quite an upgrade for just a $200 piece of gear.
I guess I should just be happy at that but of course, I have reservations about the conversion going on inside the MiniDSP, which seems to make my DAC an afterthought. I'm really curious how an analog crossover would work but for now, I'm going to enjoy the improvements this inexpensive little upgrade has given me. Thanks again to everyone who took the time to respond and share their expertise.
I'm so glad I posted this thread because I've learned a ton. (You're not the only one @larry5729! Thank you @erik_squires @mapman @onhwy61 @mrdecibel @noble100 @yyzsantabarbara and everyone else!)
I have about an hour of listening with the MiniDSP. The setup was straightforward enough. I set the high pass filter for the mains at 90hz and the sub low pass at the same. The sub has its own LPF. The HPF I had to set using the MiniDSP software installed on my Mac. Once I had the software synced with the unit, which took about five seconds, I was able to set the high pass. Couldn't have been easier. I'll have to play around with the crossover point but a few observations so far.
The amp is obviously not working as hard as before. I can reach the same SPL at a lower volume on the DAC (which doubles as my preamp). With the JL sub going up to 90hz, the bass is tighter and more finely detailed. I've been listening to an album called Wood by Brian Bromberg. He plays a 300-year old double bass with a lot of slapping, sliding and plucking techniques, which gives you a good taste of transient detail and the excellent character of the 18th century bass. There's a lot of it with the JL going up to 90hz and with the Magico Minis rolling off earlier. And there was a lot of detail already there before. But now, it's even more three-dimensional. It's the same thing with a Charlie Haden/Jim Hall album that's been on heavy rotation, where the bass articulation just jumps out of the soundstage.
I'm not sure if it's the mains not having to extend down to 40hz or the extra headroom from the amp not having to drive the mains that low, or maybe a combination of the two, but the DSP makes both the sub and the mains sound better, and the whole system more resolving. Brad Mehldau's piano from a 1990 Art of the Trio live recording sounds slightly smaller than another Art of the Trio recording from 1997, and both pianos sound smaller than Chick Corea's on Trilogy 2. I've listened to all three albums many times and never noticed the difference in the apparent size of the piano. Quite an upgrade for just a $200 piece of gear.
I guess I should just be happy at that but of course, I have reservations about the conversion going on inside the MiniDSP, which seems to make my DAC an afterthought. I'm really curious how an analog crossover would work but for now, I'm going to enjoy the improvements this inexpensive little upgrade has given me. Thanks again to everyone who took the time to respond and share their expertise.