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9446A Anniversary Series Power Amplifier

Load Protection: Startup/shutdown transients, DC faults, Subsonic signals
Cooling:
Heatsink: Thermally equalized 3/16 in aluminum black anodized heatsink, 1 per channel
Fan: Thermostatically controlled dual speed fan. Approximately 55 CFM at low speed and 105 CFM at high speed. Ball bearing fan has minimum life rating of 50,000 hours at 25°C ambient temperature
Output Topology: True complementary symmetry with grounded collectors (no mica insulators means better heat transfer)
Output Type:
Dual mode: Unbalanced, each channel
Bridge mode: Balanced
Output Devices:
Total number: 32 devices
Pdmax rating: 250 watts
Vceo: 250 volts DC
Ic: 16 amps DC
Tjmax: 200°C
Controls and Switches:
Rear: Two input level controls, Mode switch
Front: Power switch
Front Panel Indicators: Power LED, Clip LED (x2), Protect

LED (x2)
Connections:
Input: 6 terminal barrier strip, Female XLR (x2), Octal accessory socket (x2), powered with ±'15 volts DC at 25 ma.
Output: 4 terminal barrier strip
Power: 4 ft (1.22 m), 3-wire, 14 GA power cord with NEMA 5-15 plug
Fuse Type: Littelfuse Type 3AB 15 A/250 V Slo-Blo"' 326-series ceramic cartridge body, or equivalent
Power Requirements: 120 V ac, 50/60 Hz, 1800 watts (configurable to 240 V ac). 100 V ac, 50/60 Hz model available.

Operating ac Voltage
Range: Operates from line voltages as low as 90 volts (at reduced output power) assuming a 120 V ac nominal line.
Power Consumption/Heat Produced:
(Both channels operating in dual mode with 1 kHz
sinewave input signal at stated output power into 4 0 loads)
idle: 100 watts/0.340
kBTU/h
1/8th max midband
power: 1440 watts/4.276 kBTU/h 1/3rd max midband
power: 1800 watts/4.465 kBTU/h Rated output power: 2,520 watts/4.488 kBTU/h Max midband power: 2,700 watts/4.216 kBTU; h
Operating Temperature
Range: Up to 60°C (140°F) ambient
Dimensions (Rear of rack ears to max depth):
5.25 in H x 19 in W x 15.75
in D (13.3 cm H x 48.3 cm W x 40.1 cm D)
Shipping Weight: 62 lbs. (28.1 kg) Net Weight: 52 lbs. (23.6 kg) Color: Black
Enclosure: Rack mount chassis, 16 GA steel, 3/16 in 5052 aluminum alloy front panel
Standard Accessories: 4 - "U" jumper plugs for octal sockets (2 per socket, installed) 1 - Operating Instructions and Service Manual
Optional Accessories: 14712A Power Limiter
15515A Input Bridging Transformer with Resistive Pad 15524A 300 watt 70 volt Transformer
15525A 600 watt 70 volt Transformer
15567A 300 watt Autoformer 15581A 24 dB/oct Linkwitz-Riley Crossover
15594A-125 Low Pass Filter, 125 Hz
15594A-500 Low Pass Filter, 500 Hz
15594A-800 Low Pass Filter, 800 H z