Subwoofers: Pay Attention To Coverage, Feasibility, Sound Quality

While the selection process is very subjective, listening to different subwoofer models in your worship space will go a long way toward determining the right fit.

Subwoofers: Pay Attention To Coverage, Feasibility, Sound Quality
Among the best manufacturers of subwoofers in the business are L-Acoustics, d&b audiotechnik, Meyer Sound, Adamson, JBL, and Danley, if your church’s budget allows it to make such a quality investment. From that group includes this dual 18-inch woofer subwoofer by d&b audiotechnik, the B22 SUB, with power handling of 1,000 watts RMS and 4,000 watts peak.
Subwoofers: Pay Attention To Coverage, Feasibility, Sound Quality
Among the best manufacturers of subwoofers in the business are L-Acoustics, d&b audiotechnik, Meyer Sound, Adamson, JBL, and Danley, if your church’s budget allows it to make such a quality investment. From that group includes this dual 18-inch woofer subwoofer by d&b audiotechnik, the B22 SUB, with power handling of 1,000 watts RMS and 4,000 watts peak.

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Technology Resource

Worship Facilities Magazine, July-August 2017
The July-August 2017 issue of Worship Facilities Magazine offers a glance at a Texas church and Colorado church, with regard to recent work completed at each facility.
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Subwoofers are a crucial part of live sound reinforcement, and to be honest, my favorite part. This article will focus more on the coverage options, feasibility, and sound quality aspects with relation to subwoofers. When looking at potential subwoofer configurations, recognize that there are endless ways to get one to the desired result.

Understanding your options pertaining to subwoofers, will hopefully help you going forward come decision time with what you deem will be suitable for your worship space.

Whichever sub box you select, you should make sure that you get coverage in every single seat.

Coverage Considerations

There are many options for subwoofer boxes currently available, with the most common being a double driver arrangement, using 18-inch woofers in the cabinet.

Some companies, though, have designed subwoofers using bigger and smaller sizes of drivers, for example a double 21-inch array, or even a double 15-inch sub box and everywhere in between.

For the most part, subwoofers today are omnidirectional, with the exception of a horn loaded subwoofer, which is pretty directional straight out of the box.

Whichever sub box you select, you should make sure that you get coverage in every single seat.

One such option is the cardioid setup, where one takes one sub box and faces it forward, while taking another sub box and facing it backwards. For such a setup, one needs to delay the front-facing subs just enough to where the back-facing subs have enough time to produce sound. At the exact moment the sound from the back-facing subs aligns with that of the front-facing subs, the fronts would fire. What this does is it sums both subs together in the forward axis and gives you more rejection in the rear axis.

Another option to consider for a subwoofer setup, and probably the most common, is stacking the subs on each side of the stage. Generally, a couple of double 18-inch sub boxes are either ground stacked or flown very close to the left and right main hang of the PA system.

The good thing about such a setup is that the load in and load out typically is very easy if the setup is portable, and you shouldn’t have to do too much time alignment with this setup.

A stacked setup, though, does have its problems though. Usually with this arrangement, you end up with some issues as you walk across the room. In the center of the two sub stacks, you will get a power alley, where the subs will be the loudest. As you go off center, though, you will discover a power valley, where the two sub stacks will suffer some bass cancellation.


More About Sebashtian Warrick
Sebashtian Warrick currently works at Granger Community Church in Granger, Ind., as a production assistant. He helps to coordinate, plan, and execute all things related to audio, video and lighting for the church's weekend experience. He has been doing production work for 10 years, and has had the pleasure of working with multiple artists, including and Grammy and Dove award winners. Sebashtian has been married for a year-and-a-half to his beautiful wife, Ashley.
Get in Touch: [email protected]    More by Sebashtian Warrick

Latest Resource

Worship Facilities Magazine, July-August 2017
The July-August 2017 issue of Worship Facilities Magazine offers a glance at a Texas church and Colorado church, with regard to recent work completed at each facility.


Article Topics

Technology · Audio · Audio · Cardioid · Coverage · Feasibility · In-Fire Setup · Omnidirectional · All Topics

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