Music – Instruments – Electrical musical tone generation
Patent
1997-01-15
1998-09-29
Witkowski, Stanley J.
Music
Instruments
Electrical musical tone generation
84741, 84DIG1, 84DIG9, 330126, 330132, 381118, 381120, G10H 146, H03F 368, H03G 500
Patent
active
058147527
ABSTRACT:
A musical instrument amplifier system (FIGS. 1 and 2) with a frequency selective crossover circuit (10) using passive band pass filters (36, 44) to separate the amplified signals from the power amplifier (14) of an amplifier system (12) into low frequency signals on an output connector (42) for a specially adapted bass audio speaker (38) while the higher frequency signals are applied to another speaker (46). The crossover circuit (10) is selectively connected with the normal speaker output (24) in lieu of the speaker (38) to add frequency crossover capability to any amplifier system. In another musical instrument amplifying system (88), the crossover circuit (FIG. 4, 122, 124, 130, 132) is internal to an amplifier system (90) and produces preamplified low frequency signals on a special output terminal (102) for power amplification by an external power amplifier (94) while the preselected low frequency signals are blocked from the internal power amplifier (118) so it produces only the relatively middle and high frequencies at the normal speaker output connector (98). The preselected low frequency signals bypass a special effects section (112) so that special effects is selectively only produced by the internal power amplifier (118) in the relatively middle and high frequency range, while the power of the external bass power amplifier (94) is separately adjustable from the adjustment to the power level of the internal power amplifier (118). When the external power amplifier is disconnected, the internal high pass filter (124) blocking low frequency signals to the internal power amplifier (118) is automatically removed to allow full frequency amplification by the internal power amplifier (118).
REFERENCES:
patent: 3429976 (1969-02-01), Tomcik
patent: 3493669 (1970-02-01), Elbrecht et al.
patent: 4080861 (1978-03-01), Wholahan
patent: 4189971 (1980-02-01), Mantani
patent: 4819537 (1989-04-01), Hayes et al.
patent: 5086686 (1992-02-01), Misawa et al.
patent: 5543579 (1996-08-01), Morinaga et al.
LandOfFree
Musical instrument crossover circuits and method of using same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Musical instrument crossover circuits and method of using same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Musical instrument crossover circuits and method of using same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-687382