GPX c1600 CD + G karaoke party machine. How do hear myself sing thru the speaker? I only hear music. mic volume is up, the mic is switched on, balance is set to Voice.

Does a Ipod Work in this for sure?

You MUST use SPECIAL Karaoke disks that have the lyrics... Is that what you are using?

You MUST use a specially prepared Karaoke CD, not just a plain music CD.

The mics on the singing machine are very low end mics and MAY not work on your other unit. The Voco has very sensitvie inputs to use with "professional" type microphones. The Singing machine mics are going to be fairly high output and likely to overload the voco inputs. Procure some professional mics like Shure, AKG, Sennheiser or others and don't forget to use a balanced to unbalanced adapter or cable on the mics.

From the FAQ for this unit:

Make sure that you are in either CDG or AUX mode and then adjust the BRIGHT, CONTRAST, AND V-HOLD knobs, on the back of the unit, if needed

You MUST use a special Karaoke CD disk to show lyrics on the screen. Plain music CD's will play music but NOT display the lyrics. Karaoke disks can be expensive... so shop online for Karaoke CD's. Some music stores, including Costco and other warehouses sell some Karaoke disks, but they are usually in a very small section of the displays.

You would connect the IPOD to the RCA jacks on the back, HOWEVER the audio through there cannot be used for Karaoke. Te only other possibility is to mix the stereo channels of the IPOD and run them into one of the MIC inputs.

To get words, you must buy special Karaoke CD's that have the music and the lyrics. Search for sellers of the disks using Google.

The music to sing along with apparently MUST come from a disk played on the unit. It appears that the external audio jacks are just to use the unit as either a boombox or to drive a larger sound system. You will have to convert your IPOD music into a Karaoke compatible CD to be able to sing along with it... They probably detect MIC input and mute any incoming signals from the RCA jack inputs,

look for an option on it that un-mutes the the background sound.

Make sure you have the input, upper right of front, set to CD-G not CD.