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Changing the resistance of a speaker

TheArchitect

Member
Joined
Jul 6, 2003
Messages
490
You can change the ohm rating of a pot by adding a resistor of the appropriate value. Can you do the same or something similar with a speaker?
 

Diablo1

New member
Joined
Jan 20, 2008
Messages
597
Absolutely. You can change the voice coil of the speaker. The other way to change the resistance is to pair the speaker up with another speaker in series or in parallel. You could also add in a large wattage resistor - which will absorb a portion of the amp's power and act as an attenuator. Something else to consider is that the impedance rating of the speaker on the label is only approximate. The impedance changes with the frequency because of the dynamic effect of the cone and voice coil movement. The voice coil generates a voltage that opposes the voltage supplied by the amp.
 

PearlyGates59

New member
Joined
Apr 26, 2004
Messages
1,281
Absolutely....You could also add in a large wattage resistor - which will absorb a portion of the amp's power and act as an attenuator.

+1

A technique that I have used with success on several amps.
I've even made them switchable to go back to full power at gigs etc.
 
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