SB Audience
SB Audience - 8" Rosso Coaxial - ROSSO-8CX250
SB Audience - 8" Rosso Coaxial - ROSSO-8CX250
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$344.95
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$344.95
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Description
The ROSSO-8CX250 is a compact yet powerful 8" coaxial loudspeaker from SB Audience, designed for full-range audio reproduction in space-conscious professional setups. It integrates a low-frequency woofer and a high-frequency compression driver into a single unit, delivering coherent sound from a unified source.
Features
- Integrated high precision machined HF horn
- Cast aluminium chassis and HF rear chamber
- Common HF/LF ferrite magnet motor structure
- Minimum damping fibre glass voice coil former
- Ribbon voice coil wire for high efficiency of HF section
- Bifilar woofer voice coil technology for optimised BL and lower mass
- Weather-proof coated paper cone made in house with sisal and manila fibres
- Crossover not included.
Specifications
Specifications
General
| Driver type | Coaxial |
|---|---|
| Nominal size | 8" |
| Nominal impedance | 8Ω |
| Power handling (RMS) | 250 W |
| Power handling (program) | 500 W |
| Sensitivity | 94 dB |
| Frequency range | 70 – 9,200 Hz |
| Suggested alignment | Ported |
| Cone surround | Cloth triple roll |
| Spider profile | Single constant height waves |
| Weather resistant | Yes |
| Recone kit | 1P000OPSB043 |
Thiele/Small parameters
| Resonant frequency (Fs) | 70 Hz |
|---|---|
| DC resistance (Re) | 5.3 Ω |
| Minimum impedance (Zmin) | 6.2 Ω |
| Voice coil inductance (Le) | 0.72 mH |
| Mechanical Q (Qms) | 2.19 |
| Electrical Q (Qes) | 0.37 |
| Total Q (Qts) | 0.32 |
| Equivalent volume (Vas) | 15.8 L |
| Compliance (Cms) | 0.25 mm/N |
| Moving mass (Mms) | 20.8 g |
| Mechanical resistance (Rms) | 4.17 kg/s |
| Force factor (Bl) | 11.4 T·m |
| Effective piston area (Sd) | 211.2 cm² |
| Linear excursion (Xmax, one-way) | 5.4 mm |
| Mechanical excursion (Xmech) | 12 mm |
| Displacement volume (Vd) | 114 cm³ |
| Efficiency bandwidth product (EBP) | 189.2 |
| Reference efficiency (η0) | 1.39 % |
Motor
| Voice coil height | 13.4 mm |
|---|---|
| Air gap height | 8 mm |
| Magnetic flux density | 0.88 T |
| Voice coil wire | EISVCAW |
Tweeter (coaxial)
| Nominal impedance | 8Ω |
|---|---|
| Minimum impedance (Zmin) | 7.1 Ω |
| Sensitivity | 102 dB |
| Power handling (RMS) | 50 W |
| Power handling (program) | 100 W |
| Frequency range | 1,100 – 19,400 Hz |
| Voice coil diameter | 44.3 mm |
| Voice coil height | 2.25 mm |
| Air gap height | 2.5 mm |
| Magnetic flux density | 1.41 T |
| Voice coil wire | PSVCAR |
| Voice coil former | Kapton |
| Diaphragm | PEEK |
| Replacement diaphragm | 1P000OPSB032 |
Mounting
| Overall diameter | 208 mm |
|---|---|
| Cutout diameter | 179.2 mm |
| Mounting depth | 119.2 mm |
| Flange thickness (estimate) | ≈ 5.0 mm |
| Bolt circle diameter | 195 mm |
| Mounting holes | 8 |
| Mounting hole diameter | 5.5 mm |
| Volume displaced by driver | 2 L |
| Voice coil diameter | 49.5 mm |
| Weight | 4.32 kg |
| Flange and gasket thickness | 6.8 mm |
Materials
| Cone | Coated Paper |
|---|---|
| Voice coil former | Fibreglass |
| Basket | Cast Aluminium |
| Magnet | Ferrite |
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
- On this coaxial, the Thiele/Small parameters are the woofer's; the tweeter's are listed separately.
- Power handling (RMS) is the AES rating: 2 hours of pink noise (6 dB crest factor), Fs to 10 × Fs, in free air, on the minimum impedance. Program power is SB Audience's maximum power, 3 dB above the RMS rating.
- Sensitivity is averaged over 100 Hz–2 kHz.
Downloads
- ROSSO-8CX250 Datasheet
- ROSSO-8CX250 Drawing
- ROSSO-8CX250 Cutout & Recess Template (NB Audio) Every figure is straight off SB Audience's own spec sheet. Check it against your driver before you cut.
Where do these figures come from? See the source of each one
