SB Acoustics
SB Acoustics - 1¼" SDAC Tweeter - SB29SDAC-C000-4
SB Acoustics - 1¼" SDAC Tweeter - SB29SDAC-C000-4
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$88.95
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$88.95
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Stock status is updated regularly from my distributor. If the full quantity ordered isn’t available, I’ll get in touch.
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Description
Features
- Large surround dome for increased acoustic output
- Dual balanced compression chamber for improved dynamics
- Copper cap for reduced voice coil inductance and minimum phase shift
- Saturation controlled motor system for low distortion
- Non-reflective rear chamber with optimised damping for improved dynamics
- Flow optimised vented pole piece for optimum coupling to rear chamber
- CCAW voice coil for low moving mass
- Long life silver lead wires
- Low resonance frequency
- Cast aluminium faceplate
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1.25" |
| Nominal impedance | 4Ω |
| Power handling (RMS) | 60 W |
| Sensitivity | 93 dB |
Thiele/Small parameters
| Resonant frequency (Fs) | 600 Hz |
|---|---|
| DC resistance (Re) | 3 Ω |
| Voice coil inductance (Le) | 0.05 mH |
| Mechanical Q (Qms) | 2.94 |
| Electrical Q (Qes) | 1.09 |
| Total Q (Qts) | 0.8 |
| Compliance (Cms) | 0.1564 mm/N |
| Moving mass (Mms) | 0.45 g |
| Mechanical resistance (Rms) | 0.577 kg/s |
| Force factor (Bl) | 2.4 T·m |
| Effective piston area (Sd) | 9.6 cm² |
| Linear excursion (Xmax, one-way) | 0.25 mm |
| Displacement volume (Vd) | 0.24 cm³ |
| Efficiency bandwidth product (EBP) | 550.5 |
Motor
| Voice coil height | 2 mm |
|---|---|
| Air gap height | 2.5 mm |
| Magnetic flux density | 1.1 T |
| Magnet weight | 0.22 kg |
Mounting
| Overall diameter | 103.8 mm |
|---|---|
| Cutout diameter (suggested) | ≈ 71.0 mm |
| Mounting depth | 33.3 mm |
| Bolt circle diameter | 93 mm |
| Mounting holes | 4 |
| Mounting hole diameter | 4.2 mm |
| Voice coil diameter | 29 mm |
| Weight | 0.5 kg |
Materials
| Cone | Fabric |
|---|
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
Downloads
- SB29SDAC-C000-4 Datasheet
- SB29SDAC-C000-4 Cutout & Recess Template (NB Audio) Straight off SB Acoustics' spec sheet: flange outline, bolt holes. Scaled from SB Acoustics' drawing, so close but not guaranteed exact: cutout. Left out: recess depth not on file, so measure your flange. Check it against your driver before you cut.
Where do these figures come from? See the source of each one
