Seas A33 RE4Y-DC (H 339)

• SEAS woofer A33 13in/33cm dual voice coil 2 x 8 ohms
• Manufacturer: SEAS Norway Model H 339
• Years of manufacture: 1985 onwards

• Technical features:
• Injection molded aluminum, black;
• Rubber surround, paper cone w. inverse dome;
• Voice coil 2-ply, 4 connection terminals;
• Special model similar to A33F-WKA;

• Technical data:
• Recommended frequency range: 25 ... 1,000 Hz;
• Rated power: 70 W (DIN 45573);
• Max. power: 120 W (DIN 45500);
• SPL @1m, 1W: 92.5 dB @4 Ohm;
• Voice coil diameter: 39 mm;
• height: 20 mm;
• - inductance: 2.0 mH @4 ohms;
• - Resistance: 2.8 ohms @4 ohms;
• air gap height: 10 mm;
• flux density: 0.95 T;
• Moving mass: 60 g;
• Eff. area: 550 sq cm;
• Free-air resonance: 23 Hz;
• Volume.as: 302 li;
• Recommended enclosure volume: closed 50 - 70 li;
• Bass reflex: 60 - 100 r.l.;
• Quality: Q.ms: 4,0 ; Q.es: 0,30 ; Q.ts: 0,28 ;
• Mechani. compliance: 2,4 Ns/m;
• Magnet weight: 1.2 kg ;
• Total weight: 5,1 kg;
• Additional information:
• Lab test in 50 li. sealed enclosure @4 ohms:
• Impedance maximum @49 Hz.
• SPL drop from approx. 2 kHz;