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Help please Laser FX Sound to light device

Hi


 


I have just dug out my old but working fine Laser FX sound to light effect.


This needs a mono audio input either line or speaker and its input impedance seems to be around 50K


My Denon DM37DAB has a mono output for a sub woofer I guess.


Can I connect to this device using that? would any harm come to the Denon?


I could add a resistor in the line etc.


 


Thanks for advice


 


Mike