Control for distribution of electric audio signals to connected loudspeakers - comprises electrical circuit with specific output sides for each loudspeaker connected via integral impedance correction

摘要

For each loudspeaker specific output sides (Ausgang 1-5) are connected via an integral impedance correction (L-Regler 1-5 with measurable resistance band) and corresp. relays (relais 3/4, 5/6, 7/8, 9/10, 11/12) in series connection with an impedance corrected controlling appts. on the input side. In order to operate one loudspeaker alone with full volume possibility, it is appropriate that the output side of the speaker (Ausgang a) by by-passing its impedance correction (L-Regler 1) is connectable via a relay (Relais 1/2) with the control appts. If the alternative arrangement is required, whereby only one loudspeaker is to receive the full volume via its output (Ausgang 1), then the impedance correction (L-Regler 1) is by-passed and the electrical audio signals are fed via the first relay (Relais 1/2). The circuit is so formed that each pair of loudspeakers connected to the control appts. receives its own volume adjustment. ADVANTAGE - For the distribution of audio signals to several loudspeakers, overcoming the hitherto experienced disadvantage whereby all speakers received the same volume level.