Audio Upgrade - Does anyone know what specific load the amp is looking for?

[mikevoth]

I didn’t see a thread on this already, so here goes. Forgive me if I missed it/them. I’m engineering a large audio upgrade on my '24 RTL. I have everything planned and mapped out, but one question remains. I’m assuming the factory amp is looking for a signal/load when powered on. I know Harley’s have to install 47-ohm inline load resistors on each channel to trick the factory amp into thinking all is good. Also, I'm assuming I will need to do the same for all 6 channels of my Spyder. Does anyone know what specific load the amp is looking for? If I had some kind of variable load tester, I’d experiment, but I do not. There’s not a whole lot of information on the web about this, and the service manual is very lacking in this department for diagnostics. TIA

 

[Albec]

I know very little about the audio system on the Spyder, so please forgive this question.

Are the speakers connected directly to the amp(s)? If so, you can measure the resistance of each speaker to determine the load. Yes, I know that measuring the resistance of a speaker with a DMM isn't exacting, but it's close enough for this I believe.

To test the impedance of a speaker, this is the actual variable needed, normally an impedance bridge is required.