Looperlative LP1 Gen B User manual

LP1
Gen B
Version 2.49
User Manual
July 26, 2020

Table of Contents
Front Panel.......................................................................................................................... 4
Back Panel........................................................................................................................... 5
Getting Started .................................................................................................................... 5
Quick Start...................................................................................................................... 5
Setting Audio Levels...................................................................................................... 6
Recording your first loop ............................................................................................... 6
Menu Operation .................................................................................................................. 6
Track Display...................................................................................................................... 7
Undo.................................................................................................................................... 9
Recording and Playing Loops............................................................................................. 9
Recording a new unsynchronized loop .......................................................................... 9
Recording a new internally synchronized loop.............................................................. 9
Recording a new MIDI synchronized loop .................................................................. 10
Starting and stopping a recorded track......................................................................... 11
Creating Song Sections ................................................................................................ 11
Switch Record................................................................................................................................. 11
Switch Play ..................................................................................................................................... 11
Switch Play + CKSR....................................................................................................................... 11
Using Switched Commands............................................................................................................ 11
Changing Switch Behavior From End of Part to End of Clock Source.......................................... 12
Changing Switched Tracks ............................................................................................................. 12
Track Bouncing............................................................................................................ 12
Cue Track..................................................................................................................... 13
Replace......................................................................................................................... 13
Quantified Functions.................................................................................................... 13
Q Replace........................................................................................................................................ 14
Q MIDI Sync Rec ........................................................................................................................... 14
Random Restart............................................................................................................ 14
Audio Manipulations......................................................................................................... 15
Volume Control............................................................................................................ 15
Fade/Swell.................................................................................................................... 15
Pan Control................................................................................................................... 15
Feedback Control ......................................................................................................... 15
Audio Level Presets ..................................................................................................... 16
Track Volume Fade/Swell............................................................................................ 16
Reverse......................................................................................................................... 16
Speed Changing............................................................................................................ 16
Stretching/Shrinking..................................................................................................... 17
Mellotron Mode............................................................................................................ 17
Scramble....................................................................................................................... 17
Re-trigger ..................................................................................................................... 17
Configuring the LP1.......................................................................................................... 17
Edit Group.................................................................................................................... 18
MIDI Channel .............................................................................................................. 18

Noise Gate.................................................................................................................... 18
Wet/Dry Mix ................................................................................................................ 19
Time Display................................................................................................................ 19
Pedal Mode................................................................................................................... 19
MIDI Clock Out ........................................................................................................... 20
Programming the LP1 to use MIDI pedals or dials...................................................... 20
CC De-jitter.................................................................................................................. 21
MIDI or USER Button Configuration.......................................................................... 21
Advanced MIDI or User Button Configuration ........................................................... 21
Network configuration ................................................................................................. 22
Assignable Functions ................................................................................................... 22
Tips and Special Techniques: ........................................................................................... 27
Chorus/Verse/Bridge (deprecated)............................................................................... 27
Software Upgrades............................................................................................................ 28
LIMITED WARRANTY................................................................................................. 28

Front Panel
Front panel features:
1. Display shows current LP1 menu item. Initially the display shows “Looperlative LP1”,
hardware generation and software version number.
2. Knob is used to change menu item or menu item value. See “Menu Operation”.
3. Menu Button is used to move to previous menu. See “Menu Operation”.
4. Record/Overdub Button is a multifunction button that:
a. Records if track is stopped or empty,
b. Overdubs if track is playing or recording, or
c. Erases if button is held for 2 seconds.
5. User Buttons are programmable buttons. See “MIDI or USER Button Configuration”.
6. Track Indicator Lights are described in this table:
Light color and action
Track state
Light off
Track empty
Light blinking red
Audio recording to the track
Light blinking green
Audio overdubbing on the track
Light solid red
Audio recorded to the track, but the track is not playing
Light solid green
Audio recorded to the track and it is playing
7. Enter Button is used to select current menu item or select currently showing value on the
display. See “Menu Operation”.
8. Play/Stop Button is a multifunction button that:
a. Changes track to play mode if recording, overdubbing or stopped,
b. Changes track to stopped mode if playing,
c. Creates empty track same length as the clock source track if empty and the clock source
track is playing, or
d. Stops track immediately if button is held for 2 seconds.
9. All Tracks Button selects all tracks.
10. Individual Track Buttons select an individual track. If one of these buttons is held for 2
seconds, it opens a mode for selecting multiple tracks.

Back Panel
1. Power accepts the connector from the adapter supplied with the LP1. The LP1 requires a 9
VDC power supply capable of supplying at least 1A of power.
2. Network is used to connect a standard Ethernet cable. The LP1 GenB does not require cross-
over cables because it autodetects cable connection type. By default, the LP1 is configured to
automatically obtain its network configuration from a DHCP server or use an auto IP address if
there is no DHCP server on the network. Auto IP allows connecting an LP1 directly to a
computer Ethernet port without an additional router. The computer must support auto IP
configuration. For DHCP, the LP1 must be connected to a network with a DHCP server. This
is often your home router. You may instead manually configure the IP address, gateway
address, DNS server address, and netmask. All of these must have a value other than
000.000.000.000 otherwise the LP1 will attempt automatic configuration. Manual
configuration is described in “Network configuration”.
3. MIDI in is used to provide MIDI control and clock to the LP1.
4. MIDI through sends back out everything received on MIDI in.
5. MIDI out is used to send MIDI clock out to another device.
6. Audio In is two ¼ inch unbalanced audio connectors that accept line level inputs.
7. Audio Out is two ¼ inch unbalanced audio connectors that are the main outputs.
8. Aux 1 Out is two ¼ inch unbalanced audio connectors that are the aux 1 outputs.
Getting Started
Quick Start
⚫Unpack the LP1 from shipping carton. Please save shipping carton.
⚫Mount the LP1 in an empty space in your rack. The LP1 is not designed for desktop use. Please
properly mount your LP1 in a rack case or floor-standing rack.
⚫Connect the audio source to the audio inputs on the rear panel. The LP1 accepts unbalanced tip-ring
1/4” connectors. The audio inputs accept line levels or in some cases instrument levels. Never
connect an audio source that exceeds 5V peak-to-peak.
⚫Connect the audio outputs to line-level inputs on your amplifier, mixing console, or other effects
boxes.
⚫If you are using a remote MIDI controller, attach it with a MIDI cable to the MIDI input connector
on the back of the LP1.
⚫Plug the cable of the supplied power adapter into the power connector on the back of the LP1. The
LP1 requires 9VDC 1A power.
⚫Plug the power adapter into an appropriate power outlet.

⚫Turn on the power to your LP1.
⚫Your LP1 will display “LP1 booting ...”
⚫After about 8 seconds, the LP1 will display “Looperlative LP1” on the top line and the software
version on the bottom line.
Setting Audio Levels
To get the best possible audio from your sound system. It is important to correctly set audio levels.
When the display is left at the top menu where the software version is displayed for 10 seconds, then
the display will show input level on the top line and output level on the bottom line. These are the
levels of the digital audio within the unit. If possible, adjust signal levels with other equipment. If this
is impossible, then it is possible to adjust the trimmer pots within the LP1 GenB. There are 6 trimmers:
right and left input, right and left output, and right and left aux out. These trimmers require a small
screw driver to adjust the gain. You should always unplug the LP1 before removing the lid.
If the input audio level is too low or too high, adjust the volume on your audio source. Audio levels
should be set as high as possible without distortion.
When using multiple tracks or overdubbing it is possible to overdrive the output of the LP1 and cause
distortion. If this occurs, adjust the “All Main Level” from the “All Tracks” menu. A setting of -1 or -
2 is often enough.
Recording your first loop
⚫Press “REC/DUB” to begin recording.
⚫Play your musical phrase that you want looped.
⚫Press “REC/DUB” to end the loop and enter overdub mode.
⚫When you have completed overdubbing to the track, press “REC/DUB” one more time to change
from overdub mode to play mode.
⚫Press “PLAY/STOP” to stop playback of the loop.
Menu Operation
The selector knob allows you to scroll through menu items and to change the value of a menu item.
Menu items are displayed on the second line of the panel. To select a menu item:
⚫Turn the knob until the menu item is displayed.
⚫Press ENTER.
To change the value of a menu item:
⚫Select the menu item.
⚫Turn the knob until the value you want to select is displayed.
⚫Press ENTER
The MENU button returns the display to the previous menu.

The track selection buttons select a track for recording or changing. After selecting a track, turn the
knob to select a menu choice. Selecting a track also allows you to record, overdub, start or stop that
track.
Track Display
When a track is selected, the menu shows information about the track. The basic display which is the
default looks like this:
From the main menu item “Simple Display”, you can choose the option “Expert” instead of “Basic”.
The expert display is slightly different as can be seen in the following images.
Tracks that are designated in the configuration as switched tracks (see Creating Song Sections) will
have a small “s” to indicate the track will be switched.

MIDI synchronized tracks will indicate the MIDI clock on the display.
Tracks that were recorded using Sync Record will be indicated on the display.
Tracks recorded with the normal Rec/Dub show up as an asynchronous track. This also includes a
clock source track because clock source tracks are recorded as asynchronous. The subsequent child
tracks will show as synchronous as shown in previous picture.

Undo
Undo is available in the LP1. It is per-track and there are multiple undos per track. This feature is
limited by the available memory in the LP1. For a Gen B LP1, this is around 10 minutes of total audio
time. Many manipulations can be undone such us overdub, replace and scramble. Undo layers are
created when a track changes. If a track changes another time before the undo layer is completed, then
the incomplete layer is abandoned and a new layer is created. This means that changes made in close
succession may be saved together on a single undo layer.
If the audio memory runs out, the oldest undo layer from any track is thrown away. The LP1 always
maintains preference on retaining the newest undo layers.
Recording and Playing Loops
Recording a new unsynchronized loop
To record a loop to a track:
⚫Select an empty track (track light is off).
⚫Press the REC/DUB button or press the MIDI button assigned to this function.
⚫Play the audio that you want to record.
⚫Press the PLAY/STOP button or the MIDI button assigned to this function to begin looping the
audio.
Recording a new internally synchronized loop
Synchronized loops are loops that are locked in time with each other. In other words, if you have two
tracks, the music in those tracks will always stay together. You synchronize a loop to the clock source
track. By default, the clock source track is the first loop recorded. You can change the clock source
track at any time, which will not affect previous synchronizations.
Any track can be selected as the clock source track using the track menu. To select a clock source
track:
⚫Press the track number button.
⚫Turn the knob until the front panel displays, "Set As Clock Src."
⚫Press ENTER.
Or,
⚫Do nothing, and the first loop recorded will be the clock source track.
There are two methods available to create new synchronized tracks. The first method creates a
synchronized track that is the same length as the clock source track.

Method 1 for creating a new synchronized track:
⚫Select an empty track.
⚫Press the PLAY/STOP button or equivalent MIDI button. This will create an empty loop of the
same length as the clock source track.
⚫Press the REC/DUB to begin overdubbing on the new empty track.
⚫Play the audio that you want to record.
⚫Press the PLAY/STOP button to end overdubbing and continue looping.
Method 2 for creating a new synchronized track:
⚫Select an empty track.
⚫Choose the Sync Rec/Dub function or equivalent MIDI button. This begins the recording of a new
synchronized track.
⚫Press REC/DUB or the same button as in the last step to end the track and enter overdub mode on
the new track.
⚫Press REC/DUB or the same button as in the last step to stop overdubbing and simply replay the
loop.
Recording a new MIDI synchronized loop
It is possible to use an external MIDI clock source such as a drum machine to create loops that stay
synchronized. Recording new MIDI synchronized tracks is very similar to method 2 of recording
internally synchronized tracks. However, before you record a MIDI sync track, you need to tell the
LP1 how many beats per measure there are. This allows the LP1 to create loops which consist of only
complete measures. To set the number of beats measure:
⚫Press the ALL button on the front panel.
⚫Turn the knob until the bottom line reads “Beats / Measure”.
⚫Press the ENTER button.
⚫Turn the knob until the current number of beats per measure are displayed.
⚫Press the ENTER button.
After the measure length has been configured and the MIDI clock source is sending clock messages to
the MIDI input port of the LP1, you may now record a MIDI sync track. To do this:
⚫Select an empty track.
⚫Choose the MIDI Sync Rec function or equivalent MIDI button to start recording.
⚫To end recording and enter overdub mode, press the same button used in the last step.
⚫Finally, press the same button one last time to exit overdub mode.
⚫Your new loop will now be synchronized with the MIDI clock.
If your MIDI clock fluctuates a bit, the LP1 will adjust playback to remain synchronized. The LP1 will
try to remain synchronized even if you alter the MIDI clock speed. The results of changing speed are
unpredictable and if the speed is changed by a large enough amount the LP1 will lose synchronization.
However, this can be an interesting musical technique.