Celestion TSQ1845

Low frequency

18″ / 457 mm
Nominal diameter
35 Hz
Resonance
0.29
Q factor
94 dB
Sensitivity
± 15 mm
Linear excursion
3600 W
Program Power
Celestion TSQ1845 Low frequencyCelestion TSQ1845 Low frequency
Impedance
Excursion
Velocity
SPL
Phase
Group delay
Step response
Tone Burst
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply
Sensitivity (1w, 1m, infinite baffle)
SPL1W
93.8
dB
Frequency response
30 - 1000
Hz

Thiele & Small parameters

Resonance frequency (free air)
fS
35.0
Hz
Mechanical quality factor
QMS
8.71
Electrical quality factor
QES
0.30
Total quality factor
QTS
0.29

Large signal parameters

Maximum linear excursion
xmax
15.0
mm
Maximum excursion before damage
xlim
40.0
mm
Air volume displaced at xmax
VD
1701
cm³
Power handling
P
1800
W
Program power
Pmax
3600
W

Voice Coil

Nominal impedance
Z
8
Ω
DC resistance
RE
5.0
Ω
Inductance (1kHz)
LE
3.06
mH
VC Diameter
115
mm
Winding height
HVC
36
mm
Winding material
Round copper
Former material
Glass Fibre

Magnet

Force factor
Bl
33.8
N/A
Motor constant
Bl/√RE
15.1
N/√W
Air gap height
HAG
12
mm
Material
Neodymium

Diaphragm

Effective diameter
380
mm
Effective area
SD
1134
cm²
Moving mass
MMS
316
g
Moving mass (without air load)
MMD
288.7
g
Material
Glass loaded cellulose, water-resistant

Suspensions

Stiffness
KMS
15.39
N/mm
Compliance
CMS
65
µm/N
Equivalent volume to the compliance
VAS
119
L
Mechanical resistance
RMS
7.99
N·s/m
Surround material
Triple roll, cloth sealed

Dimensions

Nominal diameter
18
″
457
mm
Overall diameter
460
mm
Baffle cutout diameter
414
mm
Overall depth
235
mm
Flange thickness
17
mm
Mounting depth
218
mm
Volume occupied by the driver (estimated)
7.2
L
Net weight
11.8
kg
Frame material
Cast aluminium
SPL & Impedance
Stiffness
Celestion TSQ1845 SPL & Impedance
Celestion TSQ1845 Stiffness
DatasheetDatasheet

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