How does a Zobel network work?

How does a Zobel network work?

John L. Murphy. Physicist/Audio Engineer. A Zobel is a series resistor-capacitor (R-C) network that is connected in parallel with a loudspeaker driver in order to neutralize the effects of the driver’s voice coil inductance L(e).

Do I need a Zobel network?

Zobel network is needed to correct some instabilities of the amplifier, because of (imprevisible) phase variations caused by wires or/and crossovers, drivers, etc. Problems are occuring at high fréquencies (10 Mhz or so…), and cause some sound harshness. This can vary from case to case, from time to time.

How do you hook up a crossover?

Passive Crossovers They each go between your amplifier and a speaker and do not require a power connection, a turn-on lead, or grounding. You connect the speaker wire coming from your amp to the crossover’s input. Then the tweeter gets wired to the tweeter output, and the woofer to the woofer output. That’s it.

What is a Zobel crossover?

Zobel networks for impedance linearization. Useful in some cases for designing crossovers. A Zobel network is a series resistor-capacitor (Req-Ceq) network that is connected in parallel with a loudspeaker driver in order to neutralize the effects of the driver’s voice coil inductance Le (see note below about Le).

How is Zobel network calculated?

The value of the inductor is calculated using this formula (for a Butterworth design): L1 = Z / (2π * fC). L1 = inductance of the inductor (in Henries). Z = rated impedance of the speaker (in ohms).

How is Zobel calculated?

Impedance equalization circuit / Zobel network calculator

1. R = 1.25 * R. e
2. C = Le / R.
3. Re is the DC resistance of the speaker.
4. Le is the inductance of the voice coil of the speaker.
5. R and C are the values of the resistor and capacitor for the impedance equalization circuit.

What is Thiele network?

The main function of the Thiele network is to isolate the external load capacitance, Cload, from the amplifier output at HF.

What should my crossover frequency be set to?

The recommended crossover frequency is 56-60 Hz (high pass). At this frequency, low-end bass, which can cause distortion, is filtered out. This crossover is the perfect middle ground between midrange bass capability and full-range sounds.

What should my subwoofer crossover be set to?

Recommended Crossover Frequencies

1. Subwoofers: 70-80 Hz (low pass), the most essential purpose of a subwoofer crossover is to block midrange sounds.
2. Car main speakers: 50-60 Hz, the most critical element in main speaker crossovers is to block low-end bass (frequencies 80 Hz and below)
3. 2-way speakers: 3-3.5 kHz (high pass)