Suggestions for active crossover setup please.

Hi @bob_reynolds

I'd be happy to.

I have been using satellite/subwoofer systems since Miller & Kriesel claims to have introduced the concept with the S-1B monitors and an active sub. After a lot of experimentation, and using full-range speakers and building my own I've developed a little experience in the area. :)

Here is how I see the world.

The "smaller" or more limited a speaker is, the less problems it will have with the room acoustics and room modes. This is the typical argument for super-monitors. They sound really good because they don't challenge the room acoustic problems the way larger speakers do. This is also a lot of what happens with ESL / dynamic hybrid speakers.

Getting the bottom 2 octaves (20-80 Hz) well is a real challenge. The usual solution is to add bass traps and good EQ. With a subwoofer the challenge of integrating to the satellites is also present. Doing this well almost requires you know how crossovers work as well as a speaker designer.

It is not insurmountable, but best left to a pro.

On the other hand, the BEST way to get that bottom octave (16Hz to 32 Hz) IS with a subwoofer. It has a number of advantages. You can place it independently of the satellites, you can use an in-line EQ without affecting your satellite performance, etc.

Fortunately some speakers now have really good auto-EQ features. The only auto-EQ I trust however is JL, which are not only expensive but I hear aren't very reliable. Personally I use Hsu with miniDSP and my own settings.

I always suggest, if you want good bass, start with your room acoustics first. That treatment will outlast all your speakers and gear. :) I recommend GIK for advice and products.

THEN and only then should you listen and decide what works best in your environment.


Best,


E

Thanks for all the great responses. I understand that a lot of people don't use this approach because they want a simple system with as few pieces of electronics between source and speakers as possible. My first system follows that idea and I don't have any problems with it. Just want to see what an active system will sound like. Looking for very low distortion and flat response from 20 to 20. I may build my own speakers if I can't find a deal on something I like. Considering the Zaph Audio ZRT 2.5 build. Very clean from 25khz down to 60 where it starts to gradually roll off. I do have an old Martin Logan Grotto sub that has line level inputs and outputs and I was wondering if the line level outs are high passed or full range...couldn't find anything in the manual. Also need to look further into miniDSP. I just don't want raise the noise floor or introduce more distortion than I'm saving limiting the signal to the mains.