The following external connections are provided by the Unit:
The headphone output provides a 6.3 mm stereo headphone socket with separate, preset-independent adjustable headphone level. The headphone socket is suitable for all kinds of headphones but we strongly recommend to turn down the level when connecting low-impendance ear plugs.
The headphone level is independent from the main output level (see below).
The line output level is adjustable by the potentiometer at the right end of the front bar.
The audio output provides two parallel line-level stereo pairs of audio sockets (6.3mm TRS and XLR). Both pairs of sockets provide identical signals. The signals are transformer-balanced and ground-free, therefore in most cases a DI-box is not necessary. Unbalanced and balanced plugs can be connected. When connecting to unbalanced inputs please use unbalanced cables and plugs.
Note that using both TRS and XLR outputs at the same time may cause hum.
For removing the cable pull the plastic housing of the connector. Avoid to stress the Connector Cable.
Four 6.3 mm pedal sockets are provided for external pedal control. In general, any keyboard controller pedal can be connected. However, we recommend continuous pedals as they allow for the most nuanced performance.
Most factory presets use the mapping shown below. For more information on Sources, and especially modulation aspects, refer to chapter Using Hardware Sources.
The USB connection is used for plugging in the USB flash drive included with the C15. The drive is used for transferring preset Banks and installing Updates. The Bridge as well as external MIDI devices can be connected here as well.
The C15 comes with its own external power adapter, which connects to the power inlet. A small LED next to the inlet indicates the power, boot and shut-down status of the C15.