SB Acoustics
SB Acoustics - 1¼" RDAC Tweeter - SB29RDAC-C000-4
SB Acoustics - 1¼" RDAC Tweeter - SB29RDAC-C000-4
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$98.95
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Description
Features
- Non-resonant diaphragm design for minimum high frequency break-up
- 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
- Cast aluminium faceplate
- Low resonance frequency
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1.25" |
| Nominal impedance | 4Ω |
| Power handling (RMS) | 100 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) | 2.2 |
| Electrical Q (Qes) | 0.9 |
| Total Q (Qts) | 0.64 |
| Compliance (Cms) | 0.1564 mm/N |
| Moving mass (Mms) | 0.45 g |
| Mechanical resistance (Rms) | 0.7711 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) | 666.7 |
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 | 104 mm |
|---|---|
| Cutout diameter (suggested) | ≈ 71.0 mm |
| Mounting depth | 33.25 mm |
| Flange thickness | 4 mm |
| Bolt circle diameter | 93 mm |
| Mounting hole diameter | 4.2 mm |
| Voice coil diameter | 29 mm |
| Weight | 0.54 kg |
Materials
| Cone | Fabric |
|---|
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
Downloads
- SB29RDAC-C000-4 Datasheet
- SB29RDAC-C000-4 Cutout & Recess Template (NB Audio) Straight off SB Acoustics' spec sheet: recess depth. Scaled from SB Acoustics' drawing, so close but not guaranteed exact: cutout. Not yet checked against SB Acoustics' drawing: flange outline. Left out: no bolt holes (positions not on file). Check it against your driver before you cut.
Some figures here aren't checked against SB Acoustics' datasheet yet. See which
