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Altec 9444B & 9444B/SA Anniversary Series Power Amplifier

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Altec 9442A Amp page 1

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RUGGEDLY RELIABLE
DESIGNED FOR HIGH POWER/EXTENDED USE
9444B and 9444B/SA

Anniversary Series Power Amplifiers


•16 Metal Output Transistors Provide a Total Device Dissipation of 4,000 watts
*Patented Output Protection Circuitry (U.S. Patent No. 5,029,299)
• Superior Amplifier Cooling Provides Long Term Reliability
*UL and CSA Rated for Commercial Audio Systems


DESCRIPTION


The 9444B and 9444B/SA Anniversary Series power amplifiers are identical except for the addition of precision stepped attenuators on the 9444B/SA. Each channel delivers 200 watts of continuous average power into 8Q or 300 watts into 4Q over the full audio frequency range. In the bridge mode, the amplifier can deliver more than 600 watts at less than 0.01 % THD.

Sixteen metal output transistors are utilized for a total device power dissipation of 4,000 watts. A dual speed fan is incorporated as an added reliability measure for the most thermally stressing situations. The massive 3/16 inch heatsink was specially engineered to minimize thermal gradients, as a result, the amplifier runs cooler enabling it to operate under more adverse environmental conditions without failure.

Each channel is independently protected against:
• Over-temperature • Radio frequency interference
• Excessive output voltage • Shorted output terminals
• Excessive phase shift

The load is protected from:
• Startup/shutdown transients • Subsonic signals
• Low ac line voltage • DC faults

The 9444B and 9444B/SA have electronically balanced inputs and powered octal accessory sockets for plug-in transformers and electronic modules. The level controls and the bridge switch are mounted on the rear panel to reduce the risk of "accidental" changes. Two 70 volt output balancing transformers, models 15524A (300 watt) and 15525A (600watt), and a 300 watt autoformer, model 15567A, are available as accessories.

 


 

 

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