SEAS Prestige MR18REX/XF 7" Coaxial
Speaker Drivers · SKU: H1699-08/06 · Brand SEAS
฿13,000 (incl. VAT) · Pre-order
SEAS Prestige MR18REX/XF 7" Coaxial specifications
| Diameter Cone diameter — larger cones move more air and reach deeper bass | 7" |
|---|---|
| Impedance Voice-coil electrical resistance — must match your amplifier (e.g. 4Ω/8Ω) | Woofer 8 Ω / Tweeter 6 Ω |
| Power (RMS) Continuous power the driver handles safely (RMS) — not peak power | Woofer 80 W / Tweeter 90 W |
| Sensitivity (SPL) Sensitivity — loudness at 1W/1m; higher means louder with less amplifier power | Woofer 89 dB / Tweeter 91 dB |
| Fs Free-air resonance frequency — lower generally means deeper bass extension | Woofer 126 Hz / Tweeter 1600 Hz |
| Qts Total Q at resonance (electrical + mechanical) — guides the sealed vs ported choice | 0.69 |
| Qes Electrical Q at resonance — comes from the magnet motor strength | 0.96 |
| Qms Mechanical Q at resonance — from damping of the surround and spider | 2.49 |
| Vas Equivalent air volume of the suspension compliance — used to size the enclosure | 3 L |
| Sd Effective cone area that actually moves air | Woofer 126 cm² / Tweeter 7 cm² |
| Xmax Maximum linear excursion — more travel means louder bass without distortion | 3 mm |
| Re DC resistance of the voice coil | Woofer 6.2 Ω / Tweeter 5 Ω |
| Le Voice-coil inductance — affects high-frequency response | Woofer 0.43 mH / Tweeter 0.05 mH |
| Mms Total moving mass, including the air load | Woofer 11.8 g / Tweeter 0.3 g |
| BL Motor force factor (magnetic flux × coil length) — higher means tighter cone control | Woofer 8.3 T·m / Tweeter 3.1 T·m |
| Weight Driver weight | 2020 g |