12/28/2004, by Ben Sullivan
of Proto 2000 GP9 w/ QSI sound
just received one of the new Proto
2000 GP9s with factory installed QSI sound. I'm less than
impressed. Below is my view of the P2K/QSI sound against the
SoundTraxx EMD first
By sound element:
Bell -- It's a toss-up between the two.
Horn -- The P2K horn doesn't sound like anything I've ever
It's not quite a single trumpet "blat," yet is doesn't
sound like a multi-trumpet horn either. SoundTraxx gives you
the option to select various horn types and number of trumpets
by setting CVs on the decoder. For example, you can select
a single trumpet blat, 3-chime Nathan, or 5-chime Nathan.
The sound they emit is a better representation of the prototype
to my ear.
Prime mover -- The P2K unit sounds ok, but it's not
quite true to my ear. What bothers me most is that it doesn't
provide "transition" from series to parallel as
the throttle increases. With SoundTraxx, there's a point between
the 3rd and 4th throttle notch where you hear the prime mover
throttle back, some relays kick in, then it automatically
throttles back up with a change in the prime mover/generator
sound now that the traction motors are running in parallel.
Dynamic brakes -- P2K's sound is slightly better
because it provides not only the resistance grid "humm"
but also the cooling fan sound.
Coupler "clank" -- Edge to P2K. In DCC
is provides different sequence modes. For example, for uncoupling
you first hear cut-lever sound, followed by the knuckle opening,
followed by the air dump sound. SoundTraxx only provides the
linkage and knuckle noise.
Air compressor -- Slight edge to SoundTraxx.
Track speed indication message -- P2K wins this hands
down (not provided by SoundTraxx). When you press function
10 on your throttle the P2K emits an audible message about
your scale track speed. For example, it will say "one
seven" for 17mph or "two two" for 22mph. Of
course, the message changes throughout the speed range. You're
going to find that you've been running trains way too fast!
For me, the two most important sounds are the prime mover
and the horn, and SoundTraxx wins here hands down in my opinion.
As a result, I'm sticking with SoundTraxx for future sound
purchases. Your results/opinions may vary.
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