LR Baggs Acoustic Reference Amplifier - Manual (Page 11)

7) cH1 senD
The output for a series effects loop on channel 1. Connect an unbalanced 1/4” cable from this jack to the input of an effects pedal or rack
device. If only the send is connected, the signal is not interrupted so you could use this as an independent 1/4” output as well.
8) cH1 RetuRn
Connect the return from the output of an effects pedal or rack device to complete the effects “loop.” When you plug into the return, the
throughput of the amplifier is interrupted (thus a series effects loop) so that the entire signal runs through your effects device. you will
have to appropriately set the level and effects levels according to the controls on your external device.
9) cH2 senD
The output for a series effects loop on channel 2. Connect an unbalanced 1/4” cable from this jack to the input of an effects pedal or rack
device. If only the send is connected, the signal is not interrupted so you could use this as an independent 1/4” output as well.
10) cH2 RetuRn
Connect the return from the output of an effects pedal or rack device to complete the effects “loop.” When you plug into the return, the
throughput of the amplifier is interrupted (thus a series effects loop) so that the entire signal runs through your effects device. you will
have to appropriately set the level and effects levels according to the controls on your external device.
11) auX in 1/4” steReo
This input is a summed-stereo input allowing you to plug in another signal to mix with the other two channels. This can be used for a
third instrument, a backing track or any other standard analog audio device. The gain level is not set for passive devices but is designed
for use with CD Players, iPods and other strong signal levels. you may need a separate preamp for quieter devices used with this input.
The aux channel is not muted by the front panel mute controls or by the footswitch mute so that you can play background music while
in between sets and have your instruments or microphones muted. However, there is a volume control for the aux channel located on the
front panel in the bottom right corner to adjust the aux input level.
12) auX in Rca paRallel
This dual RCA input is joined with the 1/4” aux input so you will generally want to use one or the other (although you could mix more
than one signal into these inputs if you really wanted to). The RCA inputs are provided so that you can connect an MP3 player (such as
an iPod), CD player or some other device commonly used with RCA jacks. This can be used for backing tracks or for playing music in the
background between sets. The aux channel is not muted by the front panel mute controls or by the footswitch mute so that you can play
background music while in between sets and have your instruments or microphones muted. However, there is a volume control for the
aux channel located on the front panel in the bottom right corner to adjust the aux input level.
13) tuneR out
A pre-mute output made up of the combined Ch1 and Ch2 signals so that you may mute the speaker to tune your instrument.
14) footsWitcH
This connection can be used with a standard unbalanced 1/4” cable and a shorting footswitch (not provided). When the connection
between the Tip and the sleeve (ground) of the cable is not connected (called “open”) then the signals are not muted. When the Tip is
shorted to the sleeve, both Ch1 and Ch2 are muted.
When the footswitch is activated, the mute indicator leD’s will light up. either the footswitch or the onboard mute pushbuttons will
always be most dominant when in the mute position. This means that if the channel is muted at the amp, the footswitch cannot bring
this channel out of mute nor will switching the pushbuttons at the amp cause the footswitch to come out of mute. you can still use the
pushbuttons on the amp to mute the signal when a footswitch is connected to the amplifier.
7 8