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Roland Spd-S Sampling Percussion Pad System - Page 5 Questions & Answers
I have a roland keyboard mixing amplifier, KC-550.
The KC-550 is a MONAURAL amp and since the Ipod emits STEREO you have to use a special cable to MIX both the left and right from the Ipod into a single, monaural signal.
You can MAKE a cheapy mixer that will serve your purpose by using a series resistor, say 1K from each of the two Ipod output channels to go to the single mono input to the KC-550.
I would build it this way: Find an old IPOD cable or any 1/8 inch stereo cable and seperate the two wires and the shield. In a 1/4 inch plug, connect the shield from the Ipod cable to the shield (barrel sleeve) of the 1/4 inch plug. Connect one lead of each of TWO 1K resistors to the TIP connection of the 1/4 inch plug. Connect each of the two signal leads from the Ipod to the two remaining floating resistor leads. Insulate the splices.
DON'T forget to put the shell for the 1/4 inch plug over the cable before connecting the cable to the 1/4 inch jack. All parts should be readily available at Radio Shack.
I don't know that I have ever seen a suitable ready made mixer cable for this function.
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