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Danieln

My new LaScala crossovers.

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I have a swamping resistor in my DHAs as well, but they don't soak up as much as the ALKs. And I have no problem with output from my 2A3 amps. 

 

Is this a flashback to 2010...? 🙄

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Marvel is right, the swamping resistor is only there to make the midrange an 8 Ohms speaker, as the tweeter and the woofer already are.

Dont worry, if your amp is able to generate 3 watts at 200 Hertz into 8 Ohms, it will also do it in the midrange with the same 8 Ohms without sweating.

Regards, Dan

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But Mark, you are right in the sense that in the absence of the swamping resistor, the amp will effectively see an easier load (40 ohms in many of the old klipsch xovers). it ensue that in the presence of the said resistor, the amp will work harder compared to when there is no resistor. And as you are pointing, some energy will be absorbed by the swamping resistor.

 

The thing is that the swamping resistor (Which we should name an impedance matching resistor) is there to accommodate higher output impedance amplifiers who will have their amplitude perturbed by a high midrange impedance. Simple ohms law in fact that can easily be demonstrated.

 

Dan

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