First of all, I have to say thanks again for
sharing your design and your experience with me.
The sound is quite promising and theyve
only been playing for 3 days but are opening up
with lot of details and kicks. The sound is
pretty balance with a touch of warm and lush. I
enjoy the lower spectrum the most and it makes
the double bass, kick drum and cello so
admirable. The track 11 of Café Blue
Patricia Barbar was the reference to
compare with my horn set-up. The PMS obviously
win that for a noticeable margin. This speaker
has the ability to draw my attention to music. It
also has the ability to let me hear the authentic
impact of a full scale big orchestra.
I put more vertical bracing for interior
reinforcement and stuffed the entire box and the
4.3 liter mid range box with 100% wool. The size
of the box is exactly the same as per your
I certainly will give a detail report after
careful listening and tweaking if necessary.
Please do forward your advice if there is
anything I could make them better.
- some months later:
As promised, here comes the detail report after
some good critical ears listening with various
music, from pop to classical. The speakers since
been running for almost a month and the speakers
were driven by my new built moskido
38w rms per channel.
The sound overall is nicely
balanced with admirable sweet, warm mids and very
delicate, smooth highs. The lower spectrum is one
of the particularly outstanding area with lots of
powerful kicks. Tested with the Audiophile CD, we
confirmed it goes down to 35hz, and we could feel
the air movement when playing down to 20hz.
These speakers work extremely well
on live recordings. You could almost touch the
stage as if youre very close to the
performers and you can feel the airy sound around
you. Thanks for the good design that we
dont have to spend much time as usual to
find the sweet spot for the speakers, just simple
positioning will do the trick.
What surprises us more than
expected is its ability to make the listening
room completely disappears. They play the
recorded ambience as recorded, not in a
falsely-echo kind of way, and simply allow you to
identify what's on the recording. The
big-sounding instruments like piano, kick drums,
double bass and cello sound real. Patricia Barber
live in Paris comes alive. We almost
could touch and see what was going on the
performing stage. The sense of impact and
coherence was there.
To compare with my horn set-up,
the PMS is a bit inferior in dynamic to horn.
Unfortunately horns still sound
like horns, they sound more forward and edgy to
my ears. Luckily the PMS cabinet coloration is
not much noticeable, it confirms the concept
works not only in theory but also works in
practice. I enjoy every minute with it.
Anyway, if anyone reading this
report is ambitious, dont hesitate to try
building one for yourself. They are hard to
build, but you wont be disappointed. Couple
of my friends, after listening, asked me to build
them the speakers. I imagine Id be damn
busy if I promise.
Albert, thanks for your thorough
report on your PMS project. I'm pleased the
intentions behind the project seem to be
fulfilled. A speaker has to experiences over a
certain period of time and with a wide range of
musical sources. It's very easy to be taken by a
newly finished project. All the hours going into
it and the joy of seeing the finished self-made
After some weeks you start to realise strengths
and weaknesses with your project and that every
speaker is the result of a lot of compromises as
has been discussed particularly during the JA8008
Considering the cost of the PMS drivers, I still
think it amazing the quality of sound we can get
these days from a modest investment.
Best regards, Troels