Harley Benton Double Jammer Quick Start Manual

Safety instructions

Intended use
This product is meant to be used as a drum machine and looper pedal. Any other
use or use under other operating conditions is considered to be improper and may
result in personal injury or property damage. No liability will be assumed for damages
resulting from improper use.
Danger for children
Ensure that plastic bags, packaging, etc. are disposed of properly and are
not within reach of babies and young children. Choking hazard! Ensure
that children do not detach any small parts from the product. They could
swallow the pieces and choke!

Features

• Dual drum machine and looper pedal for guitar and bass
• Rhythm and loop functions can be used simultaneously or individually and in any
order
• Drum machine with tone, drum level and speed controls, 11 genres of drum
patterns, a total of 121 drum beats
• Tap tempo functionality

Operating elements

1 TONE Rotary control to adjust the tone colour of the drum machine.
2 DRUM LEVEL Rotary control to adjust the volume level of the drum machine.
3 SPEED Rotary control to adjust the drum machine tempo, as long as
the LOOPER is not active. Range goes from 40 to 260 bpm. If a
LOOPER file exists, the drum machine tempo cannot be adjusted.
4 9 V 300 mA Socket for power supply (PSU not included).
5 LOOP LEVEL Rotary control to adjust the playback volume level of the LOOP-
ER. 12 o'clock for 0 dB, 5 o'clock for +6dB, 7 o'clock for -∞.
6 MODE Switch to select one of three operation modes.
7 GROOVE Select from 11 different rhythm types according to the currently
selected style.
8 INPUT 1/4" jack socket for instrument connection.
9 LOOPER Footswitch to control the Looper for PLAY, DUB, UNDO, REDO,
PAUSE, DELETE. See the detailed information in the instructions
below.
10 DRUM/TAP Footswitch to turn the drum machine and tap tempo function
on or off.
11 OUTPUT 1/4" jack socket for amp connection.
12 STYLE Switch to select from 10 different drum machine styles and 11
metronome types.
Thomann GmbH • Hans-Thomann-Straße 1 • 96138 Burgebrach • www.thomann.de • info@thomann.de
Quick Start Guide
This quick start guide contains important information on the safe operation of the
product. Read and follow the safety advice and instructions given. Retain the quick
start guide for future reference. If you pass the product on to others please include
this quick start guide.
Double Jammer
Where to use the product
Never use the product
• in conditions of extreme temperature or humidity
• in extremely dusty or dirty areas
• at locations where the unit can become wet
General handling
• To prevent damage, never use force when handling the product.
• Never immerse the product in water. Just wipe it with a clean dry cloth. Do not use
liquid cleaners such as benzene, thinners or flammable cleaning agents.
• Looper with up to 30 minutes of loop time, undo / redo function and unlimited
repetitions
• Normal / Sync / Sync + counter switch
• Power supply via 9 V
supply unit: item no. 409939, no battery operation)
power supply unit (not included), suitable optional power
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DocID: 522104_01.02.2022
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