Different subwoofer settings for different albums?


So a dealer I know told me that he doesn’t use subwoofers and doesn’t know anyone who does (!) because he finds that every record has different levels of bass and would require a new subwoofer crossover point to properly blend with the main speakers.  Anyone else have this experience?
redwoodaudio

Showing 3 responses by mijostyn

redwoodaudio, Now you are on to something! You can get that kick ass bass at home. You are missing it for two reasons. Speakers are specified in an anechoic chamber at 1 meter, not in a room a 3 meters. Most speakers start losing it at 80 Hz or higher!  And, of course they do not go low enough so you are missing all the low frequency transient information you get at a live performance. I have seen Dave Holland 3-4 times at our local jazz club. His Quartet records like Not For Nothing and Prime Directive are recorded with his exact stage set up. His bass is beautifully detailed so, I frequently use these discs to evaluate bass.
To get the best result with less farting around you need at least two subs, 12" or larger, up against a wall or better yet in corners, digital bass management like with the MiniDSP unit, amplifiers greater than 1000 watts into 2 ohms with a damping factor higher than 500 (I use QSC commercial units) and passive subs. Passive subs are very inexpensive if you can build your own. Parts Express (Dayton) has some excellent kits and their sub drivers are some of the best. They make drivers for a lot of other brands. Dayton's own drivers are such a good value because they are not marked up two or three times. Check this out https://www.parts-express.com/Dayton-Audio-15-Ultimax-Subwoofer-and-Cabinet-Package-300-7097  These are a breeze to build. If you decide to go this route message me and I'll be happy to help you get the best results. The only tricky part is putting a finish on them. This can be done professionally if you are queasy about it. If you prep the cabinet correctly it is not that expensive and you can have a piano finish put on them which looks killer. 
@whart , Yes, a big subwoofer system for movies is a riot. I got my new laser projector calibrated professionally last week and the tech wanted to see a Blu Ray movie when he was finished. I just happened to grab Star Wars. The beginning of the movie is very quiet until you get to the fighting scene in the rebel starship. When the shooting started he was really startled. I had a great laugh. 

I agree whole heartedly with what you are saying. I would like to make just a few additions. Analog equalizers are difficult, even the Cello. They are very capable of making an image that was very life like, very two dimensional. This is not the case with digital equalization which can be use to improve the image and get a system to sound exactly the way you like. Done at high bit rates digital EQ is invisible as you noticed with Steven Wilson's remixes. This tech is available for home use. 
Subwoofers add greatly to the realism of most performances. When Stanley Clark thumps his bass there is a very low frequency transient that systems without adequate low end gloss over. Transients like these are common with many instruments and percussion. When they are present it adds greatly to the sense of "being there." 
Some of us want to stay pure analog I guess because it is tradition and very nostalgic and I understand that. But, there is so much you can do in the digital world that is virtually impossible on the analog side. The benefits can be simply amazing and IMHO outweigh the problems.

Nice system whart. I'd love to hear it some day. 
 
redwoodaudio, I think you might need a new dealer. If subs are set up correctly that is nonsense. I never feel the need to change my subs in any way. The correct set up of a system is the right set up for all music with the exception of balance. Balance does change slightly from one record to another so you might have to adjust the balance a dB or two to get the image perfect.
The subs are either integrated correctly or they are not. The problem is in most cases they are not. One of the major attractions of swarm systems is it is easier to get an acceptable result. Integrating subwoofers without measurement tools can be a real frustrating endeavor and many systems are worsened by their addition. Yes, you get more bass at the expense of detail. Many subwoofers are still quite audible in the lower midrange. You can't make their analog filters steep enough even with silly low crossover points.