Dynaudio Esotar2 110, Руководство пользователя

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1.2μF
8.2Ω
Esotec MD 102 Soft Dome Tweeter
Esotec MD 102
The Dynaudio Esotec mobile loudspeakers follow in the longstanding
tradition of the company’s renowned home audio driver designs.
The new Esotec MD 102 tweeter is a soft-dome design as characteristic
of Dynaudio. The fine soft dome features a special coating to facilitate an
extended high frequency response free of distortion. The compact, shallow
depth MD 102 tweeter features a 28 mm (1.1 inch) diameter surface area that
is approximately 60% greater than that of conventional car audio tweeters.
The optimized dome geometry provides greatly improved dispersion char-
acteristics, enabling the MD 102 tweeter to offer exceptional performance
even when mounted off of the listening axis. The dome coating serves to
eliminate any high frequency break-ups, while providing improved damping.
To eliminate high frequency distortions caused by reflections from inside the
structure, the MD 102 tweeter rear chamber is also sealed and acoustically
damped to eliminate high frequency distortion, which could be caused by
back-wave reflections, while ferrofluid cooling adds damping and additional
power handling.
The extremely smooth and incredibly detailed high frequency reproduction
characteristic of the Dynaudio sound is ensured by the all-new Esotec soft-
dome tweeter, which features the latest Dynaudio technological innovations.
For the most authentic high-frequency reproduction – powerful Neodymium –
one of the most efficient but also most expensive magnetic materials for
loudspeaker construction is used in the tweeter magnet systems.
The soft-dome tweeter design topology allows unrestricted dynamics and a
linear frequency response with extremely low distortion. The MD 102 fea-
tures an aluminum voice coil, another Dynaudio hallmark, which has been
updated and improved via an increased coil height with additional windings
to allow an increased range of linear excursion within the magnetic field.
Furthermore, as a result of the low moving mass of the new voice coil, a
higher maximum output level and increased dynamics are achieved, while
the frequency range has been expanded, thus allowing a better integration
with the upper midrange frequencies to deliver a more natural sound with
an open and detailed, and incredibly transparent reproduction of the high
frequencies.
Thiele Small Parameters
Nominal impedance Znom 8 Ω
DC resistance Re 5.6 Ω
Voice coil inductance Le - mH
Resonance frequency fs 1300 Hz
Mechanical Q factor Qms -
Electrical Q factor Qes -
Total Q factor Qts -
Mechanical resistance Rms - kg/s
Moving mass (incl. air load) Mms - g
Suspension compliance Cms - mm/N
Effective dome diameter d - mm
Effective piston area Sd 7.7 cm²
Equivalent volume Vas - l
Force factor BL - Tm
Recommended frequency range 2200–30000 Hz
Magnet and Voice Coil Properties
Voice coil diameter dc 28 mm
Voice coil height hc 1.7 mm
Linear excursion, peak to peak - mm
Max. excursion, peak to peak - mm
Power Handling
Nominal long term IEC 100 W
Transient (10 ms) 500 W
Mechanical Properties
Net weight 0.126 kg
Overall dimension ø 62.2 x 43 mm
SPL
Red line: on-axis response
Green line: 30° horizontal
Blue line: 60° horizontal
Measurement conditions:
Level: 2.83 V
Distance: 1 m
Measured in a large baffle
Facts
Coated textile dome eliminates
any high frequency break-ups
Powerful neodymium
magnet system
Protective grille
Open and detailed high
frequency reproduction
Damped cavity beneath
the dome
Ferrofluid adds damping and
increases power handling
Aluminium voice coil wire
results in a low moving mass
Shallow mounting depth
Strong 6.4 mm terminals
Impedance
(with and without impedance
correction circuit)
Red line: impedance, free air
Green line: impedance,
free air with compensation.
Measurement conditions:
Level: 3.16 V, 50 ohm
Driver in free air
Impedance compensation circuit