The SandTrap Story
Custom Installed In-wall/ceiling
Speaker Tuning System
It's a sunny January California morning. I'm living a comfortable retired
life; drinking coffee with my daughter and three sons at a favorite haunt.
We're engaged in the great American pastime of concocting new product
ideas. Some have a thread of credibility. Then I offered, "Isolating baffles
for custom speakers." That comment produced baffled looks that asked,
"Why would anybody want one?
Consumers spend premium dollars for speakers that can't be seen.
Well --- they're less visible. The audio industry promotes these speakers
as custom installed speaker systems. The good versions are not cheap.
They range from $600 to well over $1000 per pair --- plus installation.
The issue -- They are installed in sheet-rock walls and ceilings.
Sheet-rock is made of paper, glue, and chalk. This is not a good
material for reproducing sound from any speaker.
Mounting a speaker in sheet-rock is much as selecting a set of guitar
strings for their potential increased volume and greater sustain; then
stringing the set on an acoustic guitar made of corrugated cardboard.
This is not recommended. Similarly, sheet-rock compromises the sound
of custom installed speaker systems. Sheet-rock mounted speakers
generate muddy mid-bass, harsh vocals, and forfeit decibel level.
"OK Dad", they asked, "What are you proposing?" I propose to add an
isolating mounting surface behind the sheet-rock and speaker; a surface
that minimizes sheet-rock induced distortion by re-tuning the speaker
system resonance. This will result in tighter mid-bass, warmer vocals,
and higher decibel level. This is particularly well suited for the $600
to $800 per pair speaker category. My isolating baffle will squeeze
enough improved performance to compete with much more expensive
To my surprise they were still listening. So I continued. I would offer
this solution to custom audio/video dealers at a dealer price that would
make it impracticable for the dealers to build baffles themselves. They
will be easy to install; and I would offer the baffles at a retail price that
makes consumers and dealers smile. I then outlined how it could be
They looked at me and said, "Dad, it's a no brainer ---- do it." That's
how I exited retirement and became the captain of SandTrap Audio.