Altec 446a brochure

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TOUCH

WHEN RELIABILITY IS A PREREQUISITE

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/ 9446A Anniversary Series Power Amplifier

- THERMALLY-EOUALIZED DESIGN MINIMIZES THERMAL GRADIENTS ACROSS HEATSINK
' IMMUNE TO THE EFFECTS OF REACTIVE OVERLOADING
- N0 SOFT KNEE DISTORTION PROBLEMS

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' Auditoriums The 9446A Anniversary Series power amplifier, Each channel delivers 400 watts of continuous average
0 Arena/Stadiums power into 80 or 600 watts into 40 over the full audio frequency range. In the bridge mode, the
0 Concert Sound amplifier can deliver more than 1200 watts at typically less than 0.01% THD.

. DISCO f h' Thirty-two metal output transistors are utilized for a total device power dissipation of 8,000 watts.
' Houses 0 WOFS ID A dual speed fan is incorporated as an added reliability measure for the most thermally stressing

' Portable SOUHd situations. The massive heatsink assembly 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
- Shorted output terminals

- Startup/shutdown transients - Subsonic signals
- DC faults

The 9446A has electronically balanced inputs and powered octal accessory sockets for plugvin trans-
formers and electronic modules. The level controls are mounted on the rear panel to reduce the
risk of accidental changes as well as the bridge switch, Two 70 volt output balancing transformers,
models 15524A (300 watt) and 15525A (600 watt), and a 300 watt autoformer, model 1556, are
also available.

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