Description
Speaker Driver #8C10DVCA-2T72 (8? 15W single cone, xfmr) |
| Single cone driver (8 in. 15W) with dual voice coils and two transformers is made for systems where individual speakers must be connected to two separate or piggy-backed systems, typically used for retrofit applications. IMPORTANT: DO NOT USE this driver when one voice coil is fed from a local or zoned sound system because there will be a cross-talk problem. That application requires two separate drivers. |
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FEATURES • Driver: 8 in. 15W cone speaker with two voice coils allows for mechanical mixing of two circuits, such as music and paging, at the speaker. Highly efficient magnetic structure energized by 10oz ceramic magnet. • Frame: 20-gauge stamped steel with zinc-plated finish. • Mounting Bolt Circle: 7.625 in. • Transformers (2): 25V/70V dual voltage transformers with taps at .25, .5, 1, 2, 5W • Assembly Frequency Response: 54Hz-9kHz (±6dB) and 50Hz-20kHz (±13.4dB) • Assembly Mounting Depth: 2.84 in. • Assembly Dispersion Angle: 90 degrees conical • Assembly Average Sensitivity: 95.8dB APPLICATION NOTE Dual voice coil speakers should not be used when one voice coil is fed from a local (or zoned) sound system. For example, an application where a dual voice coil speaker is installed in a classroom with one voice coil connected to the school’s all-call paging system and the other voice coil connected to a local sound system that is used only in that classroom. When the local sound system is playing, the all-call voice coil will also be traveling across the speaker’s magnet which induces a small cross-talk voltage on the all-call speaker line. In the speakers in all other classrooms that are connected to the all-call speaker line, this will result in the audio from the local classroom sound system being heard softly. Only use dual voice-coil speakers when all of the speakers on the line are fed by the same two all-call amplifier systems. COMPLIANCE & CERTIFICATION • Made in U.S.A. with global components • Meets or exceeds industry standards A&E SPECIFICATIONS The dual voice coil 8 inch driver shall be Lowell Model No. 8C10DVCA-2T72. It shall be of the permanent magnet type with a dual voice coil with dispersion angle of 90 degrees conical @ 2000Hz (–6dB). Rated power handling capacity shall be 15 watts RMS. Each voice coil shall have a diameter of one inch and operate in a magnetic field derived from a ceramic magnet having a nominal weight of 10 oz., and an impedance of 8ohms. The driver shall have a round, stamped 20 gauge steel frame with 8.062 inch diameter, featuring eight obround holes equally spaced on 7.625 inch diameter mounting bolt circle. External metal parts shall be zinc plated. The driver shall include two dual-voltage (70V/25V) factory-wired transformers with primary taps at 5, 2, 1, .5 and .25 watts.. |
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