A:AnswerThis set much like most Logitech speakers comes with a 3.5mm Aux that connects to a headphone jack. So you can connect it to a device(laptop,phone,etc)the other end then plugs in to the speakers.
A:AnswerAs long as it is being powered it should work in the headphone jack of an iPhone, or a Macbook, I believe an iMac has a speaker port so it should work on that as well.
A:AnswerHello Frankie! If you're connecting your Z323 Speaker System to a laptop computer, usually there's only one 3.5mm port on the side for you to connect the speakers to. If on a desktop computer, these would connect to the the line-out port (usually green-colored).
A:AnswerI would suggest investing in a higher quality speaker system, however there are y-cables that would work to add a second set of headphones or speakers.
A:AnswerIf you projector has an aux out then just plug right in otherwise it will probably have an rca out. In that case just get a female aux to rca cable/adapter and you are set.
A:AnswerIf your projector has a supported 3.5mm aux or RCA audio output port, yes the Z323 will work just fine for you! Here is the getting started guide to help https://www.logitech.com/assets/65849/z323-quick-start-guide.pdf
A:AnswerThe Z323 has both RCA and 3.5mm audio input jacks. So, you could use an RCA to RCA to hook up to your record player, or RCA to 3.5mm. Either way will work!
A:AnswerYes, on the right speaker. Front knob which is also the volume adjust. I just leave them on all of the time.
Bass adjustment is on the top back of the subwoofer.