Acoustics Haydn Grand - Symphony Edition Loudspeakers
Haydns music is known for its lyricism, from which vibrant tonal
colors and brilliant harmonic structures are drawn out of deceptively
Similarly, the Haydn Grands deceptively simple driver complement
of a 6 X3P mid-bass driver and refined 1 triple stacked
silk-dome tweeter centers around the groundbreaking airflow control
wedge bass reflex port (also found on the Bach Grand) that serves to
virtually eliminate port noise, allows for increased placement flexibility,
and provides an extraordinarily compact driver configuration by positioning
the tweeter on the front of the wedge.
A compact 2-way monitor, Haydn Grand features exceptional imaging, resolution
and linearity, challenging the performance of the finest floor standers.
$2,198.00 pr (Piano Black, Cherry)
$2,498.00 pr (Rosewood, Piano White)
Tweeter: 1" Silk Dome
Bass/Midrange: 6" X3P Transparent Cone
Bass System: Bass Reflex, Front Ported
Bass Function: Impulse Optimizing QB 3 (Quasi Butterworth)
Crossover Components: MKP capacitors, 1% tolerance
Air Coils 0.7% tolerance
Metal Film Resistors, 1% tolerance
Crossover Function: 2-way, 6dB and 12dB Bessel
Impedance: 4 ohms
Frequency Response: 42Hz - 20kHz
Recommended Amplifier Power: 25 - 180 watts
Weight: 44 lbs per pair
Dimensions (W x H x D): 6.85 x 14.2 x 10.4 inches,
174 x 361 x 265 mm
Most notable of the many unique technological features found in
the Haydn Grand is the ground breaking bass reflex port air-flow control
wedge. Not only does this assembly allow for a front port configuration
that increases placement flexibility, by virtually eliminating port
noise, but it also provides an extraordinarily compact driver arrangement
by positioning the tweeter on the front of the wedge. Both features
contribute to an unrivaled level of performance in its class.
The unique construction works by way of an inner reflex port that vents
air towards a wedge positioned at the throat of the port. The cutting-line
of the wedge devides the airflow into two streams, which then flow in
a specially designed and extensively optimized flare. The relationship
of the wedge and the flare is of critical importance, and are precisely
determined to achieve
a) maximum bass support for the system, and
b) the reduction of all standing waves in the port (or port noise) by
The wedge fulfills additional and very welcome functions in the design.
As mentioned above, the large size of the wedge allows the tweeter to
be mounted within the throat of the port, resulting in a very compact
driver arrangement that improves phase coherency and overall performance
by creating a near point-source configuration. In addition, the large
internal volume allows for a chamber to vent the back wave of the driver.
To optimally use the chamber, a unique circular back wave pass through
slot runs the entire circumference of the back of the driver, as opposed
to a central hole. Because of this feature, the specially designed tweeter
for this assembly profits from unconstrained air-decompression that
approaches the theoretically ideal conditions of free field construction.
As a result, the tweeter dome operates unconstrained, even as it descends
into the lower midrange.
The entire assembly is constructed of aluminum, produced by expensive
high pressure die-cast tools.