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Sony TA-D88B

Electronic Crossover Network (1978-80)

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Sony TA-D88B


The TA-D88B is an electronic crossover network designed for use in multi amplifier stereo systems.

The input audio signal is divided into a number of different frequency bands, each band being amplified independently and passed on to individual speakers.

Each set of crossover frequency filters have been incorporated into separate plug-in type units.

Suitable crossover frequencies for a wide range of speakers available on the market may be set by plugging in an appropriate combination of the 4 different units.

The crossover frequency of each unit is determined by the capacitance of the filters, and the frequency selector switches S1-S4.

For 2-way to 4-way multi-amplifier systems, the crossover frequencies are set by adjusting Sl-S4, and by rearranging the filter units in accordance with the crossover frequencies of the speakers employed.

Levels are also adjusted to match the efficiency of each speaker.


service manual   English - omegahyperion

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