4ms Quad Pingable LFO Bedienungsanleitung
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4ms Quad Pingable LFO
Eurorack Module User Manual v2013-04-25 (initial release)
The Quad Pingable LFO (QPLFO) from 4ms Company is a compact, playable four-channel tap-tempo, pingable
(clock-syncable) LFO with variable skew and reset. Each channel's speed is set by a Tap Tempo button or an
external clock (Ping). Each channel can be Muted with a latching button and Reset with an external trigger. The
Skew CV and knob allow for a variety of waveshapes without losing sync to the ping clock. A plethora of headers
allows for connection to other modules, including the 4ms Quad Clock Distributor, the 4ms VCA Matrix, the 4ms
SISM, and the Toppobrillo Mixiplexer. Several advanced features are hidden within the QPLFO: Floating Reset
mode, one-shot mode, "mutli-shot" mode, Fire-on-unmute, Bipolar/Unipolar outputs, and more...
The QPLFO is designed to be useful in small portable systems that require maximum functionality in minimal
space, as well as large systems that need maximum modulation sources.
The QPLFO has a variety of uses:
• Four LFOs with mutes
• Master tap clock
• Clock delay (Clock phase shifting)
• Quadrature LFO
• Square/Pulse to Triangle/Ramp waveshaper
• One-shot
DOWNLOAD MOST RECENT MANUAL AT:
http://4mspedals.com/qplfo.php
Basic features:
• Quad “pingable” LFO's – frequency is set by time between pulses ("ping")
• Each of the 4 channels is an independent LFO
• Can produce a variety of waveshapes: triggers, to near-expo "pluck", to ramp-down, to triangle, to ramp-up, and all
shapes in-between
• Channels can easily modulate, trigger, and reset each other for complex and slowly morphing outputs
• Slowest period is 71 minutes (0.0002 Hz), fastest speed is about 500Hz (marginal tracking up to 1kHz)
• Tap tempo button is free-running (LFO runs indefinitely), but external clock/Ping is auto-stopping (LFO stops when
external clock stops)
Controls and jacks:
• Tap tempo button ("Ping") for manually setting the tempo
• Ping jack sets tempo with an external clock (any signal can be used)
• On/mute button enables or mutes the output (latching button)
• Skew knob and CV jack control the waveshape by altering the ratio between rise and fall times
• At 0% Skew (0V of CV), the shape is a 10ms trigger
• At 1% Skew is a near-exponential "pluck"
• As Skew increase to about 3%, it becomes less exponential and more linear
• At about 3% Skew, the shape is linear ramp-down
• At 50% Skew (about 5V of CV), the shape is triangle
• At 100% Skew (about 10V of CV), the shape is ramp-up
• Skew knob provides offset to the incoming CV signal, so any range of CV is acceptable
• Reset jack restarts the LFO without changing the tempo (rising edge triggered)
• OUT jack outputs either a 0 to 10V waveshape, or a -5V to +5V waveshape (jumper selectable)
• LED flashes and dims to the signal on the OUT jack
• Tap tempo button flashes to the internal tap-tempo clock or to incoming pulses on the Ping jack
• On/Mute button lights up when channel is On
Advanced
• Ping and Reset inputs use comparators, so any waveshape can be used for triggering (audio waves, complex LFOs,
even the QPLFO itself!)
• Trim-pot on PCB allows for adjustment of comparator threshold value
• "Fire-on-unmute" jumper per channel:
• When this optional jumper is installed, pressing the On button to turn the channel on will reset the LFO.
• If the jumper is not installed (factory default), pressing On will unmute the LFO without resetting (LFO runs in
the background when muted)
• Bipolar/Unipolar jumper:
• Setting jumper to Bipolar makes the outputs -5V to +5V
• Setting jumper to Unipolar makes the outputs 0V to +10V
• One jumper controls all four channels
• One-shot mode: Reset jack can be used to trigger a one-shot envelope if the external ping clock is stopped. See
section below for detailed discussion
• Floating Reset mode: Holding a high gate on Reset jack allows the waveshape to run freely without automatically re-
syncing to the ping clock. A bare cable plugged into the jack causes a high gate
• Connects to other modules using ribbon cables:
• Outputs can connect to the 4ms VCA Matrix, or the 4ms SISM, or the Toppobrillo Mixiplexer
• Normalization of ping jacks can connect to the 4ms Quad Clock Distributer
Dimensions
• 12 HP Eurorack format module
• 1.57” (40 mm) deep
Power consumption
+12V rail:
89mA max with 5V Source jumper selecting external 5V
154mA max with 5V Source jumper selecting internal 5V
+5V rail:
65mA max with 5V Source jumper selecting external 5V
not used with 5V Source jumper selecting internal 5V
-12V rail:
73mA max
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Produktspezifikationen
| Marke: | 4ms |
| Kategorie: | Klaviatur |
| Modell: | Quad Pingable LFO |
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