The 3½” transducers FR090WA01 (4 ohm) and FR090WA02 (8 ohm) were designed especially for high quality multimedia and lifestyle speakers, where sound reproduction without compromises is required while still keeping size small.
FEATURES
True full-range design with on-axis output to beyond 20kHz
Copper cap on center pole to reduce voice coil inductance and to minimize variations in voice coil inductance as a function of voice coil position
Black anodized alu cone for better heat transfer
Vented steel chassis for lower air flow speed reducing audible distortion
Vented voice coil former for reduced distortion and compression
Heavy-duty black fiber glass voice coil bobbin to reduce mechanical losses resulting in better dynamic performance and low-level details
Large motor with 22 mm voice coil diameter for better control and power handling
Low-loss suspension (high Qm) for better reproduction of details and dynamics
Black motor parts for better heat transfer to the surrounding air
Conex spider for better durability under extreme conditions
Gold plated terminals to ensure long-term trouble free connection
Delivered with EVA gasket attached for hassle-free mounting and secure cabinet sealing
SPECIFICATIONS
frequency range = 200-20000 Hz
resonance frequency fs = 113 Hz
impedance R = 4 Ohm
sound pressure level SPL = 86,5 dB (2,83V; 1m)
DC resistance Re = 3,2 Ohm
force factor BL = 2,75 N/A
voice coil inductance L = 0,076 mH
effective piston radiating area Sd = 36 cm2
effective mechanical mass incl. air load mms = 3,45 g
equivalent volume of compliance Vas = 1,14 l
total Q factor Qts = 0,86 (Qms=5,9, Qes=1)
voice coil diameter = 22 mm
maximum peak linear excursion vibration xlin = +/- 2,25 mm
