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 . MODEL: C390X/PA/8 L T A C N 007 396 705 . 15” BASS-MID MID DRIVER Description The C390X/PA is a n Australian made professional 15" bass/mid loudspeaker with a useful upper limit of 4 KHz. KHz This model offers superb mid-range range performance, high program power handling, and high efficiency, capable of producing extreme levels. The wide frequency range makes this model most suitable for vocal two-way two systems. This model features rigid diecast aluminum frame, CNC precision components. The massive FE optimised ferrite magnet -assembly permit large linear voice coil excursion with efficiency. efficiency Improved BL linearity, lower distortion, less wind noise is achieved with an undercut and flared vented polepiece. The stiff damped curvilinear cone is a product of our OFP technology and is molded in -house house from a blend of premium air dried wood pulp and Kevlar fibres resulting in smooth mid response. The spider is made of Aramid material chosen for its high rigidity and long term stability in demanding applications. The accordion cloth cone surround assures extreme levels with minimal distortion. Efficient driver parameters have been selected to produce big punchy bass in a vented enclosure. Reliable performance and the high 400W rms thermal rating, 800W max. program is achieved with a 4" voice coil and state of art high temperature adhesives coupled to a massive robust diecast aluminium chassis for maximum heat dissipation. These features provide minimum thermal compression in demanding appl ications. The C390X model has been engineered and hand crafted to the highest and strictest tolerances to meet the demanding requirements of professional sound reinforcement applications. Application Professional high -quality quality bass sound reinforcement applications appl in the frequency range 35Hz to 4kHz where extreme sound pressure levels are required i.e. live music clubs, music playback systems for discos, theater public address systems and high power indoor/outdoor PA systems and other general applications. Imminently suitable for two- way vocal foldback enclosure applications. Under controlled conditions we recommend each C390X/PA be driven by a power amplifier capable of delivering between 100 and 800 watts into 8 ohms providing the average rms. program power wer does not exceed 400 watt. This model is not recommended for bandpass or horn loaded applications. Refer: -C390X/PA2 C390X/PA2 application notes for enclosure details. Mounting Details D 800W Technical Data Typical measured Thiele/Small parameters: Maximum program power = 800 watt Thermal power rating = 400 watt rms Rated nominal impedance Z = 8 ohms Rated frequency range = 32 - 5000 Hz Piston sensitivity level = 99 dBSPL Octave band SPL pink noise = 102 dBSPL = 47 Hz Resonance frequency Qm = 1.8 Mechanical Q Qe = 0.27 Electrical Q Qts = 0.23 Total spk. Q Mms = 87 gms Moving mass Effective diaphragm diameter D = 33.5 cm Sd = .088 sq.m. Effective diaphragm area Peak linear vol. displacement Vd = 160 ccm Vol. equiv to spk compliance Vas = 143 litres Cms = 130 um/N Mechanical compliance Bl = 25 T.M. BL product d = 100 mm Voicecoil diameter = copper Voicecoil material Re = 6.5 ohms Voicecoil DC resistance Lvc = 1.2 Voicecoil inductance = 12 mm Voicecoil height Hg = 8 mm Height of air-gap Xpk = 2.0 mm Peak linear displacement = 5.5 % Reference efficiency = 9000 gms Speaker total mass Specifications subject to change without notice. Frequency Response Infinite baffle response recorded at one watt at one meter. Bass Response Baffle opening diameter front mounting 352 mm rear mounting 352 mm Mount ing pattern: eight 7.3 mm holes equi-spaced spaced on a 370mm PCD. Flange thickness 19 mm. Typical bass performance at 1W and one meter including typical box losses for: (a) A 70 litre capacity vented system tuned to 70 Hz, (this being achieved with two 100mm mm PVC ports each 77mm long Options Available in 4, 8 and 16 ohm impedance. Refer C390XPA application notes for more details Copyright Lorantz Audio Services Pty. Ltd.