JohnC Posted November 11, 2019 Share Posted November 11, 2019 Hi folks, I am getting ready to trade in my PX-160 and upgrade to a PX-360. I have a question about using the LINE OUT outputs. I was hoping to connect a small powered sub to the L/MONO line out connection. My thinking is that using a small sub in addition to the keyboard's built-in speakers will make the sound a little fuller by giving it a little more bottom end. However, there is something mentioned in the user guide that concerns me: "While sound output from the speakers is disabled, the digital piano automatically optimizes sound for headphones and LINE OUT listening. During speaker output, it automatically switches to optimization for listening with speakers." "When using the line out jacks, also connect headphones to the PHONES jacks. This will switch the LINE OUT output to appropriate sound quality." Can anyone provide some insight as to what this sound optimization is doing? Is the sound output being altered that much between the speakers vs. the line out jacks? What can I expect to happen if I hook up a sub as explained above? Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted November 11, 2019 Share Posted November 11, 2019 It's basically applying a preset EQ curve that helps the internal speakers sound better. Inserting a plug in the headphones jack disables the internal speakers and removes that EQ curve. It may also boost the line output level some when the internal speakers are off. I've never heard of anyone using a subwoofer from the line out of a PX-360 before. It seems like an interesting idea. Technically speaking, I think it would work. I don't know what the results will sound like however. Quote Link to comment Share on other sites More sharing options...
pianist.l Posted February 17, 2020 Share Posted February 17, 2020 Hi all, I usually play my PX360 through a Alto Kick 12 amp and this really gives it some bottom end. I tried plugging in a headphone jack but it doesn't seem to make much difference to the sound apart from losing the monitoring affect of the built in speakers. Colin Hogarth. Quote Link to comment Share on other sites More sharing options...
Jokeyman123 Posted February 17, 2020 Share Posted February 17, 2020 So turning the speakers "off" in the menu settings performs the same EQ function as plugging in a headphone? I've never noticed a difference, maybe I better check. I have been turning speakers off when recording to digital recorders with the line out jacks. Quote Link to comment Share on other sites More sharing options...
Brad Saucier Posted February 17, 2020 Share Posted February 17, 2020 It may be more of an output level difference than anything else, but it does make a difference. Quote Link to comment Share on other sites More sharing options...
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