Subwoofers with trigger input
prices on 30 models— the trigger input allows an active subwoofer (see "Type") to turn on automatically when it receives a service signal from an external device such as a turntable. Such a signal is usually sent at the moment this device is turned on — thus, the owner does not have to turn on the “sub” separately, which is especially convenient when it is located in a hard-to-reach place.
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