Lorantz Lorantz - Melbourne Music Centre

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LORANTZ A U D I O S E R V I C E S P T Y . L T A-C304U/W2/8 D A C N 007 396 705 . 12" SUBWOOFER - 400W Description Technical Data The C304U/W2 is an Australian made high fidelity 12" woofer loudspeaker with a useful upper limit of 1 -KHz. This model offers superb bass performance, high power handling, high efficiency and large linear cone excursion . Computer optimized design, leading Australian technology, and advanced materials produce superior performance. The C304U range features a large ferrite magnet with engineered components to achieve maximum magnet efficiency. This model features our stifff highly rigid ribbed cone of made from selected softwood paper using OFP technology. The cone body is terminated with a rubber roll -surround surround which ensures smooth midmid band performance and provides the necessary cone excursion at high power; this model iss also fitted with a large paper dustcap to prevent air leakage via the voice coil and enhances the midrange. This driver features efficient driver parameters that produce a full rich sub-bass bass in a vented enclosure and band-pass band enclosures. Reliable performance and high 200W rms. thermal rating, 400W max. program is achieved with a 2" voice coil and state of art high temperature adhesives. The C304U model is engineered and hand crafted to the highest and strictest tolerances to meet the demanding requi rements of professional sound monitoring applications. Typical measured Thiele/Small parameters: Maximum program power = 400 watt Thermal power rating = 200 watt rms Rated nominal impedance Z = 8 ohms Rated frequency range = 30 - 1000 Hz Piston sensitivity level = 92. dBSPL Octave band SPL PL pink noise = 92 dBSPL = 38 Hz Resonance frequency Qm = 3.4 Mechanical Q Qe = 0.436 Electrical Q Qts = 0.386 Total spk. Q Mms = 74 gms Moving mass Effective diaphragm diameter D = 25.4 cm Sd = .051 sq.m. Effective diaphragm area Peak linear vol. l. displacement Vd = 205 ccm Vol. equiv to spk compliance Vas = 86 litres Cms = 235 um/N Mechanical compliance Bl = 15.7 T.M. BL product d = 50 mm Voicecoil diameter = copper Voicecoil material Re = 6.1 ohms Voicecoil DC resistance Lvc = 1.2 mH Voicecoil inductance = 16 mm Voicecoil height Hg = 8 mm Height of air-gap Xpk = 4 mm Peak linear displacement = 1.05 % Reference efficiency = 3800 gms Speaker total mass Specifications subject to change without notice. notice Application Low frequency driver in high -quality quality monitor or sub-bass sub sound reinforcement applications in the frequency range 30Hz to 1 -KHz where moderate sound pressure levels are required, i.e. Monitor, home HI-FI, subwoofer applications.. In the correct enclosure and under controlled conditions we recommend each C304U/W2 be driven by a power amplifier capable of delivering 50 to 400 watts into 8 ohms providing the average RMS. program power does not exceed 200 watt. Refer: -C304U/W2 C304U/W2 application notes for enclosure details. Frequency Response Mounting Details Baffle opening diameter front mounting 273 mm rear mounting 273 mm Mounting pattern: eight 6 x 9 mm holes equi -spaced spaced on a 291 mm PCD. Flange thickness 9 mm Typical infinite baffle response recorded at one watt at one meter. Infinite baffle response with recommended correction filter. Impedance Typical impedance plot. Copyright Lorantz Audio Services Pty. Ltd.