User manual ALTEC LANSING 205 CEILING SPEAKER

[. . . ] The new Altec Lansing Professional CD912 is an excellent choice for hotel meeting spaces, convention centers, airports & transportation facilities, and any high ceiling applications that require reproduction of high fidelity music and intelligible speech. [. . . ] A 1, 500 Hz second order crossover provides smooth high fidelity transitions. The optional transformers (16 and 32 Watts) feature a low < 0. 6 dB insertion loss. CD912-8A SPECIFICATION Frequency Response 75 ­ 15, 000 Hz +/- 5dB Low frequency limit (-10 dB) 45 Hz Power Handling 125 W EIA, 500 W peak Sensitivity (SPL - 1 W 1 m) 100 dB Maximum Output (Peak SPL) 127 dB Magnet Weight 2. 4 lb (1. 1 Kg) Impedance Nominal - 8 Ohms Minimal - 4. 6 Ohms Crossover 1, 500 Hz Dimensions: CD912-8A Height: 4. 92 in (125. 7 mm) Diameter: 12. 24 in (311 mm) Net Weight: CD912-8A 14 lbs 1 oz (6. 4 kg) SHIPPING Weight: CD912-8A 17 lbs 3 oz (7. 8 kg) Optional Transformer: T516-71 16 Watt, 70 V / 100 V with 70 V taps @ 16 W, 8 W, 4 W and 2. 0 W T532-71 32 Watt, 70 V / 100 V with 70 V taps @ 32 W, 16 W, 8 W and 4. 0 W repair parts: Diaphragm/Voice Coil Assembly: R-912-8HF Kit 12" Driver Recone Kit: R-912-8LF Kit 1000 W. Wilshire Blvd. , Suite 362 · Oklahoma City, Oklahoma 73116 · Phone: 1-405-848-3108 · Fax: 1-405-848-3217 · www. altecpro. com ARCHITECTS & ENGINEERS SPECIFICATION The loudspeaker shall be an Altec Lansing Professional CD912-8A Duplex® with a 12 inch (300 mm) diameter moisture resistant woofer, a broad dispersion dome tweeter with heat resistant voice coil and a die-cast corrosion-resistant speaker frame. The speaker shall have a power rating of 125 W EIA / 500 W peak. Please note that larger volume enclosures will result in altered low frequency performance. SAFETY CONSIDERATION 1. Appropriate connectors with suitable ratings must be used to make all installation connections. All unused taps must be insulated with suitable insulation. Transformers and speaker combinations must be supplied by a suitable amplifier incorporating ungrounded outputs only and reinforced insulation (as per IEC60065) from output to mains. ACCESSORIES Altec Lansing recommends use of our 12 inch (300 mm) square metal enclosures and grilles. [. . . ] The CD912 Series will also fit on standard industry ceiling speaker hardware. Frequency Response (1 W 1 m on-axis) Beamwidth Impedance Q & Directivity Index MOUNTING DIMENSIONS A CD912-8A 12. 24 in (311 mm) B 4. 92 in (125 mm) A B One Octave Polar Response Charts 6 dB/Division 250 Hz 500 Hz 1 kHz 2 kHz 4 kHz 8 kHz As we are continually striving to improve Altec Lansing products, specifications are subject to change without notice. TRANSFORMER CHART CD912-8A Premium 16 W Transformer (T516-71) Primary 16. 0 W 8. 0 W 4. 0 W 2. 0 W Premium 32 W Transformer (T532-71) Primary 32. 0 W 16. 0 W 8. 0 W 4. 0 W 70. 7 V Primary Tap Color Code Brown Red Orange Yellow Black 100 V Primary Tap Color Code Red Orange Yellow N/A Primary Common WIRING DIAGRAM YELLOW 1. 0 dB ORANGE RED BROWN COMMON COMMON 0. 5 dB + 8 BLACK/WHITE BLACK LEAD - PROFE S S IONA l © 2002 Altec Lansing Professional 1000 W. [. . . ]