| 摘要 |
A surround system comprising front, center, and rear amplifiers which respectively drive front, center and rear speaker units. The system operates in a surround sound environment with low impedance (4 OMEGA ) speaker units. When high impedance speaker units are connected, the system automatically cuts the center and rear speaker units and operates in a non-surround sound environment by the front amplifier only. Accordingly, the system does not require a excessive large power supply unit.
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