OVERVIEW
Single Driver Loudspeaker
featuring the DFR8 full range driver
in an ultra-flex cabinet design.
Crossover-less wide range
performance from 50Hz ~ 25kHz.
A true 99 dB 1w/1m efficiency!
Incredibly big and open sounding
with no mid range shout.Uncanny speed
makes it comparable to a good
electrostatic panel.Good weight and
balance make it more than usable on
it's own without a sub.
 If
you've steered away from single
driver speakers because of the typical
tipped-up response and in-your-face
sound, this is the exception you've
been looking for.
CABINET TECHNOLOGY
The
Nibbelin Ultraflex are similar in sound
to an open baffle but have bass with
good weight and tone. In the
mid range the cabinet design acts like a
one-way valve (check valve) over a large
band of frequencies. Sound inside
the cabinet exits instantaneously
leaving little to no sound to reflect
back to the driver.
High band frequencies are
handled by foam spheres placed inside
the cabinet in a vertical line to
eliminate all parallel surfaces. The
actual number of spheres can be
adjusted to taste.
The result is simply the most
non-congested sounding cabinet you've
ever heard next to an open baffle.
Very nice balance, non-peaky,
non-beamy, great tone and an
absolutely huge wall of sound with
excellent depth and no holes.
The efficiency
is conservatively rated on this
speaker making it a great choice with
fine low power tube gear. At the
same time it does some
pretty impressive things
with bigger amps.
POWER
REQUIREMENTS
Tube amp friendly with reasonable to
above average performance on our 2 watt
SET amplifiers but electrifying on
higher power.
ON THE SOUND & PERFORMANCE
Besides the elevated performance of
these speakers, their biggest asset is
the smoothness and disappearing
act. Smoothness that is often hard
to find in most high efficiency
speakers... They accurately
reflect the recording source and
amplifier. Imaging is one of these
speakers strong points and they
virtually disappear with good upstream
components. Musicians will
appreciate the accuracy of timbre and
harmonics making it effortless to
identify specific brands and models of
instruments in the recording.
SPECIFICATIONS
- 99 dB
with 1 watt at 1 meter
- 58Hz ~
20kHz flat
- 48Hz ~
25kHz -3dB
- 8 ohm
nominal impedance
- Crossoverless
- 2 ~
60 watts
- Max SPL
115 dB
- Size
12.5" wide, 17" deep,
42.5" high
- Ultraflex cabinet
NFX
DESIGN NOTES
SUPPORT
We also have a support
forum with many people who own
our speakers who's experiences you may
benefit from.
REVIEWS
You may read reviews on our
products here.
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