KarouselRotary / Drive
Karousel puts a spinning rotary speaker on your board. Slow, vibey pulse or fast shimmer, with the push and pull of real air moving past the mics. Tap the footswitch to change speed, hold it to brake the rotor to a stop, and add drive when you want the motor to work.
Left footswitch · Slow / Fast / Brake
Speed is the instrument
One footswitch runs the rotor. Tap it to move between your slow and fast speeds; hold it to brake. Pick a speed here to watch the horn and the sound it throws.
Select
A slow rotor, set anywhere from a deep 0.1 Hz pulse to a lively 4 Hz swirl with the Slow knob. Gentle movement and slow speaker bloom behind whatever you play.
Audio demos
Listen
Straight from the pedal. Headphones help.
Rotor at its slowest, into Kavern's plate freeze, in a huge room.
Varying speeds inside a full track.
Straight in, no fuss.
The swirl moving across the stereo field.
Watch Karousel in action on YouTube.
Watch the videoControls
The panel
Six knobs shape the rotor and the cabinet around it; three switches set the ramp, the cabinet voice and where the mics sit.
- Pot 1
- SlowSlow rotor rate, from a 0.1 Hz pulse to a 4 Hz swirl.
- Pot 2
- FastFast rotor rate, 4 Hz to 10 Hz.
- Pot 3
- Drum:HornHow tightly the virtual drum and horn speeds lock together. Higher separates them for a wobblier feel.
- Pot 4
- DrivePost-effect boost or cut. Up amplifies what the rotor is doing, with a little grit.
- Pot 5
- IntensityTremolo depth, from subtle movement to full, pulsing amplitude.
- Pot 6
- DepthThe Doppler pitch motion, 0.3 to 0.7 ms. Higher moves the sound toward and away from the mics.
- Switch 1
- AccelerationHow quickly Karousel moves between slow and fast: slow, medium or fast ramp.
- Switch 2
- CabinetVintage (500 Hz), Classic (800 Hz) or Modern (1200 Hz) cabinet voice.
- Switch 3
- Mic PositionFront, rear or both. Front or rear alone gives more pronounced Doppler.
- Left switch
- Slow / Fast / BrakeTap to change speed, hold to brake.
- Right switch
- BypassTurns Karousel on or off.
Specifications
Built for your whole rig
- Rotor
- Slow 0.1–4 Hz, fast 4–10 Hz, speaker brake
- Cabinets
- Vintage, Classic and Modern voicings
- Mics
- Front, rear or both
- Drive
- Post-rotor boost with added grit
- Audio
- 24-bit / 96 kHz, mono or stereo on TRS
- MIDI
- Type-A TRS In and Thru, full CC control
- Expression
- APEX: assign any supported knob to an expression pedal
- Presets
- 128 onboard, managed in Keystone Control Center
- Updates
- Free lifetime firmware over USB
- Power
- 9V DC center-negative, regulated
- Warranty
- One year
Karousel is one of seven dynamic effects from Keystone Musical Instruments, an American company based in Bensalem, PA. Every Keystone pedal shares the same small enclosure, MIDI control, APEX expression and free firmware updates, so they work together on one board. Its LED glows purple, its signature color.
Put Karousel on your board
Try it in your rig for 30 days. If it isn't for you, send it back.