Patent ID: 8085952

Claim:
A combination equalizer and calibrator circuit assembly, comprising: an equalizer set and a calibrator, said equalizer set comprising a plurality of adjust circuits, said calibrator being connected to a front end of said equalizer set and comprising a frequency control circuit, a signal generator, an amplifier circuit, a compare circuit, and a display circuit, wherein said signal generator is electrically connected to said adjust circuits of said equalizer set and said frequency control circuit; said frequency control circuit provides a reference frequency and a plurality of test frequencies; said amplifier circuit is connected with a microphone and electrically connected to said compare circuit; said compare circuit is electrically connected to said display circuit through a comparator thereof, and is capable of inputting a reference voltage; and said equalizer set is connected with a speaker, whereby said frequency control circuit is controlled to output said reference frequency for receiving by said microphone, for enabling said reference frequency to be amplified by said amplifier circuit and then provided to said compare circuit for comparison with said reference voltage so that said display circuit displays the comparison result; when the comparison result is nonzero, one respective sound level control circuit of said amplifier circuit is adjusted to zero point as the reference point for comparison, and then said frequency control circuit is controlled to output said test frequencies for adjustment through the respective adjust circuits of said equalizer set so that said display circuit indicates the respective zero point, and then an audio player is allowed to output a sound signal through said equalizer set for causing said speaker to produce sound.