Reprinted from Stereophile, September 2004
Here is an excerpt from a SubTrap review published in Stereophile. Download the pdf for the complete review.
I had misgivings. A SubTrap is one big, chunky black box—stacking my sub on top of it created a monumental black tower that loomed over the listening position like one of those monoliths from 2001: A Space Odyssey. But it worked like magic. As soon as I’d set it up, it was obvious that the room acoustics had changed for the better. There was less apparent energy from clapping, loud conversation, or just stomping around.
It worked like magic. As soon as I’d set it up, it was obvious that the room acoustics had changed for the better.
When I turned on the system, there was also less apparent bass energy from all widerange signals, even with the sub disconnected!
Clearly, the SubTrap was minimizing the excitation of these room modes. I say “modes” because my multichannel room measures 16’ by 16’ by 8’ (I know, I know… not room dimensions anyone would choose from scratch for audio reproduction), which means that the 70Hz trap was working on the fundamental of the major mode for the height, and the first harmonic of the major mode for the length and width.
Copyright 2004 Stereophile