Alesis 12R manual Line-level devices synthesizers, CD players, video

Connections

Line-level devices (synthesizers, CD players, video)

The Multimix 12R features line-level inputs on 1/4" phone jacks which accept standard unbalanced or balanced signals

Unbalanced Line Input Balanced Line Input

Signal

Ground

Tip

Tip

Sleeve

Sleeve

Hot	Tip
Cold	Ring
Ground	Sleeve

Tip
Ring	Sleeve

Unbalanced -10 dBV line level sources: Most synthesizers, drum machines, effect devices, cassette decks and CD players operate at this level. Their average signal level is about 1/3 of a volt. They have a 2- conductor output jack that is either a 1/4" phone or "RCA phono" type. These may be plugged directly into any of the Multimix 12R’s [LINE IN] jacks, with the [TRIM] level set at approximately the 1 o'clock position. Plug stereo sources such as synthesizers, CD players, and drum machine main outputs into the STEREO LINE channels (9/10 and 11/12) if possible.

Electric guitars and basses may be plugged directly into the [LINE IN] jacks, if you raise the [TRIM] level. The Multimix 12R has more than enough gain (up to 50 dB when the channel fader and trim are set to maximum) for guitars, although some pickups may sound better if they're plugged directly into a high-impedance preamp designed for guitar use. Plug the output of such preamps into any [LINE IN] jack.

A reminder: do not plug a line input and a microphone input into the same channel. The inputs are not designed to handle two sources at the same time. If you crank up the line level input to extremes to compensate for the level loss, you may damage the microphone.