Dayton Audio
Dayton Audio - 5¼" Midbass Driver - ND140-4
Dayton Audio - 5¼" Midbass Driver - ND140-4
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$74.95
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$74.95
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Description
Dayton Audio's 5¼" ND140-8 midbass driver features an efficient, low-distortion Neo-Balanced motor that is combined with a rigid yet lightweight aluminium diaphragm, yielding impressive high-impact audio reproduction. Perfect for single point-source applications, or combined in multiples and line arrays.
Features
- Extended-range 54 Hz to 8 kHz performance
- Rubber-edged aluminium alloy cone
- Large excursion capability 4 mm Xmax, 20 mm peak
- Self-shielded Neo-Balanced motor structure
- 1" 4-layer underhung voice coil with polyimide former
- 40 watts RMS power handling
Specifications
Specifications
General
| Driver type | Mid-Woofer |
|---|---|
| Nominal size | 5.25" |
| Nominal impedance | 4Ω |
| Series | ND |
| Power handling (RMS) | 40 W |
| Power handling (program) | 80 W |
| Sensitivity | 88.4 dB |
| Frequency range | 54 – 8,000 Hz |
| Suggested alignment | Either |
Thiele/Small parameters
| Resonant frequency (Fs) | 59.2 Hz |
|---|---|
| DC resistance (Re) | 3.7 Ω |
| Voice coil inductance (Le) | 0.79 mH |
| Mechanical Q (Qms) | 5.35 |
| Electrical Q (Qes) | 0.72 |
| Total Q (Qts) | 0.63 |
| Equivalent volume (Vas) | 7.22 L |
| Compliance (Cms) | 0.71 mm/N |
| Moving mass (Mms) | 10.1 g |
| Mechanical resistance (Rms) | 0.7022 kg/s |
| Force factor (Bl) | 3.9 T·m |
| Effective piston area (Sd) | 86.6 cm² |
| Linear excursion (Xmax, one-way) | 4 mm |
| Displacement volume (Vd) | 34.64 cm³ |
| Efficiency bandwidth product (EBP) | 82.22 |
Mounting
| Overall diameter | 154.5 mm |
|---|---|
| Faceplate | Not round (see the maker's drawing) |
| Cutout diameter | 120 mm |
| Mounting depth | 62.5 mm |
| Voice coil diameter | 25.4 mm |
| Weight | 0.4536 kg |
| Mounting holes | 4 |
Materials
| Cone | Black Anodised Aluminium |
|---|---|
| Surround | Rubber |
| Voice coil former | Kapton Polyimide |
| Magnet | Neodymium |
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
Downloads
- ND140-4 Specifications Sheet
- ND140-4 Data Files
- ND140-4 Cutout & Recess Template (NB Audio) Every figure is straight off Dayton Audio's own spec sheet. Left out: recess depth not on file, so measure your flange; no bolt holes (positions not on file). Check it against your driver before you cut.
Where do these figures come from? See the source of each one
