Dynaudio Esotar2 110, Manual

ø169mm

6holes ø4,3mm on ø158

Mounting hole min ø136mm

67mm

5,2mm

15mm @max cone excursion

Esotar² 650

22μF

4.7Ω

Woofer

  Esotar² 650

The Esotar² 650 is a 17 cm (6.5") diameter mid/bass driver that is built 

on a rigid, die-cast solid aluminum frame and features Dynaudio’s 

characteristic MSP (Magnesium Silicate Polymer) diaphragm. 

The MSP cone is a proprietary Dynaudio innovation, made in-house and 
featuring precisely-shaped, geometrically-optimized form to enable the 
smooth, optimized sound dispersion.

The  voice  coil  diameter  is  exceptionally  large  at  75  mm,  but  by  using 
extremely  light  aluminum  wire  wound  on  a  Kapton  former,  the  coil  re-
mains  extremely  lightweight  to  enable  ultra-fast  movement.  The  large 
coil enables the magnet to be positioned inside the coil, allowing for a 
larger and more homogenous magnetic field to be utilized. In conjunc-
tion  with  the  incredibly  powerful,  high-efficiency  neodymium  magnet, 
this low-mass driver construction provides excellent transient response, 
incredible speed and unmatched precision.

When used as part of a two-way speaker system, the midrange resolution 
of the Esotar² 650 is simply beyond reproach; mid-bass remains taught 
and accurate while always exhibiting perfect control at all volume levels.
The Esotar² 650 perfectly reflects the innovation and performance that 
have  established  the  Dynaudio  Esotar  drivers  as  the  most  advanced 
high-performance transducers available.

Thiele Small Parameters

Nominal impedance

Znom

4 Ω

DC resistance

Re

3.4 Ω

Voice coil inductance

Le

0.33 mH

Resonance frequency

fs

49.6 Hz

Mechanical Q factor

Qms

6.2

Electrical Q factor

Qes

0.47

Total Q factor

Qts

0.44

Mechanical resistance

Rms

1 kg/s

Moving mass (incl. air load)

Mms

20 g

Suspension compliance

Cms

0.52 mm/N

Effective dome diameter

d

123 mm

Effective piston area

Sd

120 cm²

Equivalent volume

Vas

10.5 l

Force factor

BL

6.73 Tm

Recommended frequency range

50–4000 Hz

Magnet and Voice Coil Properties

Voice coil diameter

dc

75 mm

Voice coil height

hc

14 mm

Linear excursion, peak to peak

9 mm

Max. excursion, peak to peak

21 mm

Power Handling

Nominal long term IEC

200 W

Transient (10 ms)

1000 W

Mechanical Properties

Net weight

1.25 kg

Overall dimension

ø 169 x 78 mm

SPL

Red line: on-axis response

Green line: 30° horizontal

Blue line: 60° horizontal

Measurement conditions:

Level: 2.83 V

Distance: 1 m

Box volume: 15.6 l

Facts

Diaphragm and dust cap 

moulded as one piece

Large 75 mm voice coil ensures 

high power handling

Internal double nedymium 

magnet system with vented 

pole piece

Aluminium voice coil wire 

provides for a low moving mass, 

wound on kapton former in a car

Rigid die-cast chassis with 

aerodynamically shaped ribs

Materials and parameters are 

optimized for the harsh environ-

mental conditions in a car

Smooth high-frequency roll-off

Natural midrange reproduction

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