Description
The SB Acoustics SB26STCN-C000-4 is one of the most popular and highly regarded soft dome tweeters in the SB Acoustics lineup. It strikes an outstanding balance between performance, size, and value, making it a favorite for both DIY speaker builds and commercial loudspeaker designs.
Features
- Copper cap on pole piece for reduced voice coil inductance and minimum phase shift
- Fine weave soft fabric dome for smooth frequency response
- Inherently shielded neodymium motor system
- Internal pressure equalization and flow resistor for non-resonant coupling of cavities
- Compact design
- CCAW voice coil for low moving mass
- Long life silver lead wires
- Low resonance frequency
Specs
- Nominal Impedance 4 Ω
- DC resistance, Re 3.2 Ω
- Voice coil inductance, Le 0.04 mH
- Effective piston area, Sd 6.2 cm2
- Voice coil diameter 25.4 mm
- Voice coil height 1.3 mm
- Air gap height 2.5 mm
- Linear coil travel (p-p) 1.2 mm
- Moving mass incl. air, Mms 0.3 g
- Free air resonance, Fs 960 Hz
- Sensitivity (2.83 V / 1 m) 92.5 dB
- Mechanical Q-factor, Qms 1.6
- Electrical Q-factor, Qes 1.77
- Total Q-factor, Qts 0.84
- Force factor, Bl 1.8 Tm
- Rated power handling* 120 W
- Magnetic flux density 1.2 T
- Magnet weight (neo) 21 g
- Net weight 0.1 kg
* IEC 268-5, high-pass Butterworth, 2600 Hz, 12 dB/oct.
✅ Why It’s a Standout
-
Compact form factor – the neodymium motor allows a smaller faceplate, ideal for narrow baffles or MTM/MTMW designs.
-
Natural and balanced sound – soft dome smoothness without dullness or sizzle.
-
Excellent dispersion – maintains clarity off-axis.
-
High sensitivity – ~91 dB is great for pairing with less efficient woofers.
-
Budget-friendly – punches far above its price point in clarity and refinement.
🔧 Best Use Cases
-
2-way and 2.5-way bookshelf or tower speakers
-
MTM speakers or narrow front-baffle designs
-
Compact speaker systems requiring a tight layout
-
Projects demanding high-value, natural-sounding treble
🛠️ Crossover Guidance
-
Recommended crossover point: ≥2.0–2.5 kHz
(With 12 or 18 dB/octave slopes) -
Works well with:
-
SB13PFC25-4 / SB15NRX2C30-4 (4–6.5″ woofers)
-
Many Dayton Audio, Scan-Speak Discovery, and Peerless midwoofers
-
-
If you use a higher-order filter (like 4th order), you can cross slightly lower.
⚖️ Comparison: SB26STCN vs SB26ST-C000-5
| Feature | SB26STCN-C000-4 | SB26ST-C000-5 |
|---|---|---|
| Magnet Type | Neodymium | Ferrite |
| Faceplate Size | 72 mm | 104 mm |
| Impedance | 4 ohms | 6 ohms |
| Fs | ~1.6 kHz | ~1.3–1.5 kHz |
| Sensitivity | ~91 dB | ~90 dB |
| Size Advantage | More compact | Standard size |
Reviews
There are no reviews yet.