Compensation network for loudspeakers

DETAILED DESCRIPTION What is claimed is: 1.
A system for extending and smoothing base response of a loudspeaker which has an impedance characteristic in the low base frequency range exhibiting a first impedance peak at a first particular frequency and a second impedance peak at a second particular frequency in the mid base frequency range, comprising: a passive frequency compensation network including a series resonant circuit having an inductor, capacitor and resistor connected in series, said series resonant circuit being tuned to the frequency of the first impedance peak of said loudspeaker, a second inductor loosely inductively coupled to said first inductor to provide a tuned transformer tuned to the frequency of said second impedance peak in the mid base frequency range, said loudspeaker being coupled to said network whereby the impedance of the loudspeaker is effectively reduced to provide a desired acoustic output from said loudspeaker.
2.
A system for extending and smoothing base response of a loudspeaker which has an impedance characteristic in the low base frequency range exhibiting a first and second impedance peak at a first and second frequency comprising: a series resonant circuit having an inductor, capacitor and resistor connected in series, said series resonant circuit being tuned to the frequency of the impedance peak of said loudspeaker, said loudspeaker being connected in parallel with the series connected inductor and resistor, and a second inductor loosely inductively coupled to said first inductor to provide a tuned transformer, said tuned transformer being tuned to the second frequency at which the speaker exhibits said second impedance peak to reduce the second impedance peak.




Description:
The invention is directed to an improved loudspeaker system and in particular to loudspeaker systems having extended and smooth base response.
A major design goal of any high fidelity loudspeaker system is the optimization of the flattest and deepest base response