Seas T18REX/XFC H1353-08/06, the PP/TPX based cone matches ideally with the adaptive rubber surround. The result is an outstandingly smooth frequency response from the mid woofer.
The coaxially arranged precoated fabric dome high frequency unit has a low resonance frequency, and integrates with the cone driver to a point source.
The cone of the woofer acts as a horn loading for the tweeter, and the chassis of the dome unit represents the throat of this horn.
Extremely stiff and stable injection moulded metal basket, keeps the critical components in perfect alignment.
Large windows in the basket both above and below the spider reduce sound reflection, air flow noise and cavity resonance to a minimum.
T18REX/XFC Specifications
Woofer
power handling (continuous/programme) = 80/250 W
frequency range = 30-3000 Hz
resonance frequency fs = 30 Hz
impedance R = 8 Ohm
sound pressure level SPL = 87,5 dB (2,83V; 1m)
DC resistance Re = 6,2 Ohm
force factor BL = 7,8 N/A
voice coil inductance L = 0,70 mH
effective piston radiating area Sd = 126 cm2
effective mechanical mass incl. air load mms = 13,3 g
equivalent volume of compliance Vas = 42 l
total Q factor Qts = 0,24 (Qms=1,64, Qes=0,29)
voice coil diameter = 39 mm
maximum peak linear excursion vibration xlin = +/- 6 mm
mounting diameter d = 145,2 mm
overall diameter d = 176 mm
mounting depth (not countersunk) t = 83,5 mm
Tweeter
power handling (continuous/programme) = 125/250 W
frequency range = 2000-25000 Hz
resonance frequency fs = 1200 Hz
impedance R = 6 Ohm
sound pressure level SPL = 88,5 dB (2,83V; 1m)
DC resistance Re = 4,8 Ohm
force factor BL = 2,3 N/A
voice coil inductance L = 0,05 mH
effective piston radiating area Sd = 7 cm2
effective mechanical mass incl. air load mms = 0,3 g
voice coil diameter = 26 mm
maximum peak linear excursion vibration xlin = +/- 0,5 mm
