Dayton Audio ND90-8
4Ω
8Ω
Full-range
3.5″ / 104 mm
Nominal diameter
71 Hz
Resonance
0.65
Q factor
81 dB
Sensitivity
± 4 mm
Linear excursion
40 W
Program Power
- Parts Express
- $$
- Amazon.com
- $$
- Sensitivity (1W, 1m, infinite baffle)
- SPL1W
- 81.1
- dB
- Frequency response
- 80 - 15000
- Hz
- Resonance frequency (free air)
- fS
- 70.7
- Hz
- Mechanical quality factor
- QMS
- 4.71
- Electrical quality factor
- QES
- 0.75
- Total quality factor
- QTS
- 0.65
- Maximum linear excursion
- xmax
- 4.0
- mm
- Air volume displaced at xmax
- VD
- 13
- cm³
- Power handling
- P
- 20
- W
- Program power
- Pmax
- 40
- W
- Nominal impedance
- Z
- 8
- Ω
- DC resistance
- RE
- 7.5
- Ω
- Inductance (1kHz)
- LE
- 1.08
- mH
- VC Diameter
- 19
- mm
- Winding material
- Copper
- Former material
- Kapton® / Polyimide
- Force factor
- Bl
- 4.3
- N/A
- Motor constant
- Bl/√RE
- 1.57
- N/√W
- Material
- Neodymium
- Effective diameter
- 63
- mm
- Effective area
- SD
- 31
- cm²
- Moving mass
- MMS
- 4.2
- g
- Moving mass (without air load)
- MMD
- 4
- g
- Material
- Black Anodized Aluminum
- Stiffness
- KMS
- 0.82
- N/mm
- Compliance
- CMS
- 1220
- µm/N
- Equivalent volume to the compliance
- VAS
- 1.77
- L
- Mechanical resistance
- RMS
- 0.4
- N·s/m
- Surround material
- Rubber
- Nominal diameter
- 3.5
- ″
- 104
- mm
- Overall diameter
- 104
- mm
- Baffle cutout diameter
- 85
- mm
- Overall depth
- 61
- mm
- Volume occupied by the driver (estimated)
- 0.18
- L
- Frame material
- Steel