Originally Posted by jpmst3
No question there.
But, doing a DIY kit is a great promotion for a product and company....the DIY community stretches far and wide.
After all the DTS-10 was based on input from that very same community in which Tom has roots.
I've been building a lot of Synergy horns with miniDSP lately.
The problem with DSP is that it only works at one point in a room. For instance, if you use DSP on a midrange and tweeter to align them, that correction is only accurate for one point.
This leads to speakers that sound good at one spot on the couch, but sound terrible from another. Even worse, that DSP correction can screw up the off-axis response.
In a Synergy horn, we have a couple of things going for us:
1) The drivers are very very close together, so if you need to adjust things, the DSP adjustments are very subtle
2) The walls of the horn constrain the radiation. So if you use DSP to fix response or phase, those corrections are less likely to screw up the off-axis, as they would with a conventional two-way
You can build a shockingly good Synergy horn with MiniDSP and a few hours. Heck, I'll bet I could build a complete Synergy horn two-way in a single afternoon with MiniDSP. It is seriously the greatest tool for Synergy horn fans.
Here's an example of how I used it personally:
I built a Synergy horn with two midranges and a compression driver. When I measured the combination, there was dip in the upper frequencies. The dip was narrow and deep, which is an indicator that the midrange and the tweeter are out-of-phase in a narrow band.
If I was using passive crossovers, I would have two solutions. The first solution is to trash the horn and start again. The second solution is to increase the rolloff of the midrange, so that it's level is lower at the point where it's interacting with the tweeter.
But with MiniDSP I had another solution; I simply used delay to move the midranges "electronically." And this delay only amounted to a fraction of an inch, but it eliminated the dip.
If it wasn't for MiniDSP, I probably would have had to start again. And considering that it takes a while to build a horn, that could amount to a whole weekend of making sawdust.
Long story short - if you're on the fence about building a Synergy horn, I say go buy yourself some drivers and that QSC horn and a miniDSP. If I can build a Synergy horn in a day, so can you.