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Multi-Way Conventional loudspeakers with crossovers

Crossover questions
Crossover questions
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Old 11th September 2019, 09:15 PM   #11
Draki is offline Draki  Macedonia
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Location: Macedonia
Quote:
Originally Posted by wolf_teeth View Post
The woofer has a damped 12dB electrical network (ie- coil plus zobel), and the tweeter has a 1st order electrical with ladder delay plus some padding and a tilt down via the CR filter.

The CR in front of the circuit 15uF/22 ohm lends to having a rising system impedance without it. With a CR across both the woofer and tweeter, this would not be the case, save for a lowpass induced rise or an impedance peak at Fo in lieu of the xover. Having that CR directly across the amplifier terminals should likely have a higher power resistor in tow to keep it from over heating. I would think those 2 components could be omitted as all they are doing is changing the impedance of the system. Typically an LCR is used for this purpose to suppress xover impedance humps, and far reduced bandwidth flows through the circuit if a LCR vs a CR is used.

Later,
Wolf
This, of course, is correct. Not a deep notch EQ in the tweeter leg, but a delay lattice. I should have used the zoom (and not watched Euro qualifiers at the same time)...
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Old 12th September 2019, 02:08 AM   #12
AllenB is offline AllenB  Australia
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If the RC in the woofer circuit was impedance compensation (Zobel) then it would be pure first order. However the resistor is 4r7, so whether this is a 4 or 8 ohm woofer may make the difference there.

The tweeter has a non-flat impedance so it is more difficult to tell.
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