Speakers and crossover circuit

Claim 2

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a series resonant circuit coupled in parallel to the woofer and woofer circuit impedance constancy; b. a first capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; c. a first resistor coupled in series with the first capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; d. a second capacitor coupled in shunt relationship to the first resistor for boosting the signal to the tweeter at higher frequencies; e. a second resistor coUpled in parallel with the first resistor, second capacitor and tweeter for tweeter circuit impedance constancy; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 3

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a first inductor coupled in series with the woofer and a first capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a series resonant circuit coupled in parallel to the first inductor, first capacitor and woofer for woofer circuit impedance constancy; c. a second capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; d. a first resistor coupled in series with the second capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; e. a third capacitor coupled in shunt relationship to the first resistor for boosting the signal to the tweeter at higher frequencies; f. a second resistor coupled in parallel with the first resistor, third capacitor and tweeter for tweeter circuit impedance constancy; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 4

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a first inductor coupled in series with the woofer and a first capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a series resonant circuit coupled in parallel to the first inductor, first capacitor and woofer for woofer circuit impedance constancy; c. a second capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; d. a first resistor coupled in series with the second capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; e. a third capacitor coupled in shunt relationship to the first resistor for boosting the signal to the tweeter at higher frequencies; f. a second resistor coupled in parallel with the first resistor, third capacitor and tweeter for tweeter circuit impedance constancy; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 5

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a series resonant circuit having in series a first capacitor, first inductor, first resistor and second inductor all coupled in parallel to the woofer for woofer circuit impedance constancy; b. a second capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; c. a second resistor coupled in series with the second capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; d. a third capacitor coupled in shunt relationship to the second resistor for boosting the signal to the tweeter at higher frequencies; e. a third resistor coupled in parallel with the second resistor and tweeter for tweeter circuit impedance constancy; f. a fourth capacitor coupled at one end between the first inductor and first resistor and at the other end between the second resistor and the tweeter for boosting the signal to the tweeter at lower tweeter frequencies and for additional attenuation to the tweeter at mid-range tweeter frequencies; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 6

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a series resonant circuit having in series a first capacitor, first inductor, first resistor and second inductor all coupled in parallel to the woofer for woofer circuit impedance constancy; b. a second capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; c. a second resistor coupled in series with the second capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; d. a third capacitor coupled in shunt relationship to the second resistor for boosting the signal to the tweeter at higher frequencies; e. a third resistor coupled in parallel with the second resistor and tweeter for tweeter circuit impedance constancy; f. a fourth capacitor coupled at one end between the first inductor and first resistor and at the other end between the second resistor and the tweeter for boosting the signal to the tweeter at lower tweeter frequencies and for additional attenuation to the tweeter at mid-range tweeter frequencies; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 7

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a first inductor coupled in series with the woofer and a first capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a series resonant circuit having a series a second capacitor, second inductor, first resistor and third inductor all coupled in parallel to the first inductor, first capacitor and woofer for woofer circuit impedance constancy; c. a third capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; d. a second resistor coupled in series with the third capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; e. a fourth capacitor coupled in shunt relationship to he second resistor for boosting the signal to the tweeter at higher frequencies; f. a third resistor coupled in parallel with the second resistor and tweeter for tweeter circuit impedance constancy; g. a fifth capacitor coupled at one end between the second inductor and first resistor and at the other end between the second resistor and the tweeter for booSting the signal to the tweeter at lower tweeter frequencies and for additional attenuation to the tweeter at mid-range tweeter frequencies; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 8

A woofer and tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a first inductor coupled in series with the woofer and a first capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a series resonant circuit having a series a second capacitor, second inductor, first resistor and third inductor all coupled in parallel to the first inductor, first capacitor and woofer for woofer circuit impedance constancy; c. a third capacitor coupled in series with the tweeter for directing the higher input frequencies to the tweeter; d. a second resistor coupled in series with the third capacitor and tweeter for attenuating the tweeter at mid-range input frequencies; e. a fourth capacitor coupled in shunt relationship to he second resistor for boosting the signal to the tweeter at higher frequencies; f. a third resistor coupled in parallel with the second resistor and tweeter for tweeter circuit impedance constancy; g. a fifth capacitor coupled at one end between the second inductor and first resistor and at the other end between the second resistor and the tweeter for booSting the signal to the tweeter at lower tweeter frequencies and for additional attenuation to the tweeter at mid-range tweeter frequencies; whereby the lower input frequencies are directed to the woofer and the higher input frequencies are directed to the tweeter with circuit impedance constancy and with woofer and tweeter frequency response constancy.

Claim 9

A woofer, mid-range tweeter and high-range tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a series resonant circuit coupled in parallel to the woofer for woofer circuit impedance constancy; b. a first capacitor, first inductor and first resistor coupled in series with the mid-range tweeter, the first capacitor directing the mid-range frequencies to the mid-range tweeter, and the first resistor attenuating the mid-range tweeter at medium mid-range frequencies, with the first inductor for cutting off the high-range frequencies to the mid-range tweeter and also attenuating the input to the mid-range tweeter at medium mid-range tweeter frequencies; c. a second resistor coupled in parallel to the first resistor and mid-range tweeter for mid-range tweeter circuit impedance constancy; d. a second capacitor coupled to the apparatus input signal and coupled in series with the high-range tweeter for directing the high input frequencies to the high-range tweeter; e. a third resistor coupled in series with the second capacitor and high-range tweeter for attenuating the high-range tweeter at medium high-range frequencies; f. a third capacitor coupled in shunt relationship to the third resistor for boosting the signal to the high-range tweeter at higher high-range frequencies; g. a fourth resistor coupled in parallel with the third resistor, third capacitor and high-range tweeter for high-range tweeter circuit impedance constancy; whereby the lower input frequencies are directed to the woofer, the mid-range input frequencies are directed to the mid-range tweeter and the high-range input frequencies are directed to the high-range tweeter with circuit impedance constancy and with woofer, mid-range tweeter and high-range tweeter frequency response constancy.

Claim 10

A woofer, mid-range tweeter and high-range tweeter coupled in parallel and a crossover circuit apparatus which comprises: a. a series resonant circuit coupled in parallel to the woofer for woofer circuit impedance constancy; b. a first capacitor, first inductor and first resistor coupled in series with the mid-range tweeter, the first capacitor directing the mid-range frequencies to the mid-range tweeter, and the first resistor attenuating the mid-range tweeter at medium mid-range frequencies, with the first inductor for cutting off the high-range frequencies to the mid-range tweeter and also attenuating the input to the mid-range tweeter at medium mid-range tweeter frequencies; c. a second resistor coupled in parallel to the first resistor and mid-range tweeter for mid-range tweeter circuit impedance constancy; d. a second capacitor coupled to the apparatus input signal and coupled in series with the high-range tweeter for directing the high input frequencies to the high-range tweeter; e. a third resistor coupled in series with the second capacitor and high-range tweeter for attenuating the high-range tweeter at medium high-range frequencies; f. a third capacitor coupled in shunt relationship to the third resistor for boosting the signal to the high-range tweeter at higher high-range frequencies; g. a fourth resistor coupled in parallel with the third resistor, third capacitor and high-range tweeter for high-range tweeter circuit impedance constancy; whereby the lower input frequencies are directed to the woofer, the mid-range input frequencies are directed to the mid-range tweeter and the high-range input frequencies are directed to the high-range tweeter with circuit impedance constancy and with woofer, mid-range tweeter and high-range tweeter frequency response constancy.

Claim 11

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a second inductor coupled in series with the woofer and a fourth capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer.

Claim 12

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a fourth capacitor coupled in parallel with the first resistor for boosting the signal to the mid-range tweeter at high mid-range frequencies.

Claim 13

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a fourth capacitor and fifth resistor coupled in series and coupled at one end between the first capacitor and first inductor and at the other end between the mid-range tweeter and the signal input for mid-range tweeter and high-range tweeter circuit impedance constancy.

Claim 14

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a second inductor coupled in series with the woofer and a fourth capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a fifth capacitor coupled in parallel with the first resistor for boosting the signal to the mid-range tweeter at higher mid-range frequencies.

Claim 15

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a second inductor coupled in series with the woofer and a fourth capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a fifth capacitor and fifth resistor coupled in seRies and coupled at one end between the first capacitor and first inductor and at the other end between the mid-range tweeter and the signal input for mid-range tweeter and high-range tweeter circuit impedance constancy.

Claim 16

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a fourth capacitor coupled in parallel with the first resistor for boosting the signal to the mid-range tweeter at higher mid-range frequencies; b. a fifth capacitor and fifth resistor coupled in series and coupled at one end between the first capacitor and first inductor and at the other end between the mid-range tweeter and the signal input for mid-range tweeter and high-range tweeter circuit impedance constancy.

Claim 17

A woofer, mid-range tweeter and high-range tweeter and a crossover circuit apparatus as recited in claim 5 further comprising: a. a second inductor coupled in series with the woofer and a fourth capacitor coupled in parallel with the woofer for directing the lower input frequencies to the woofer; b. a fifth capacitor coupled in parallel with the first resistor for boosting the signal to the mid-range tweeter at higher mid-range frequencies; c. a sixth capacitor and fifth resistor coupled in series and coupled at one end between the first capacitor and first inductor and at the other end between the mid-range tweeter and the signal input for mid-range tweeter and high-range tweeter circuit impedance constancy.