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BELL C2.200 Speaker System - BELL AUDIO STORE
High Fidelity Amplifier 2200 Ampl/Mixer Bell Sound Systems; | Radiomuseum
BELL C2.200 Speaker System - BELL AUDIO STORE
The Bell System technical journal . follows:Consider first the simulation in the low-frequency range, i.e., 200 cycles to500 cycles. For this region a semicircle may be selected much as in thefirst