Haut-parleur **Vintage** SEAS W21EX001
[E0004 W21EX001] Avis/Critiques

The W21EX-001 is an 8" cone driver developed for use as a high fidelity Woofer. Choose it when you want piston-like behavior without resonance, smooth extended frequency response, linearized
driving force, and low.

SPECIAL FEATURES:
- Natural rubber surround and a specially treated, hard paper cone which is designed to be very stiff without losing the damping capability of paper and requires no additional coating.
- Perfectly matched moving parts for a smooth, extended frequency response.
- Large magnet system for improved sensitivity and transient response.
- Heavy copper rings mounted above and below the T-shaped pole piece, to reduce non linear and modulation distortion and increase overload margin.
- Copper plating of the top and bottom plates and a solid copper phase plug, which enhance the
performance of the copper rings and improve heat conduction away from the pole piece.
- Gold plated terminals mounted on a stiff bakelite plate to reduce contact resistance and improve
reliability.
- Stiff and stable injection moulded metal basket to keep the critical components in perfect alignment.

Technical speacifications :

NOMINAL IMPEDANCE 8 ohms
RECOMMENDED FREQUENCY RANGE 30-3000 Hz
SHORT TERM MAXIMUM POWER * 250 W
LONG TERM MAXIMUM POWER* 120 W
CHARACTERISTIC SENSITIVITY (1W, 1m) 91.0 dB SPL
OPERATING POWER ( 96 dB SPL ,1 m ) 3.2 W
VOICE COIL DIAMETER 39 mm
VOICE COIL HEIGHT 18 mm
AIR GAP HEIGHT 6.0 mm
LINEAR COIL TRAVEL ( p-p ) 12.0 mm
MAXIMUM COIL TRAVEL ( p-p) 19 mm
MAGNETIC GAP FLUX DENSITY 1.0 T
MAGNET WEIGHT 0.64 kg
TOTAL WEIGHT 2.16 kg
VOICE COIL RESISTANCE 6.4 ohms
VOICE COIL INDUCTANCE (EQUIVALENT) 0.32 mH
FORCE FACTOR 8.5 N/A
FREE AIR RESONANCE 31 Hz
MOVING MASS 26 g
AIR LOAD MASS IN IEC BAFFLE 2.0 g
SUSPENSION COMPLIANCE 1.2 mm/N
SUSPENSION MECHANICAL RESISTANCE 2.0 Ns/m
EFFECTIVE PISTON AREA 220 sq-cm
VAS 63.8 Litres
QMS 2.73
QES 0.48
QTS 0.41

* IEC 268-5

Response curve recorded in anechoic chamber (Free-field, 4 pi radiation) with 0.5m microphone distance. The loudspeaker is mounted in a closed box of 20 l net. volume

Distortion on axis in % between 25 and 2000 Hz at operating power.