Radial Engineering JCR User Manual

Radial™ Smart Sheet

Order No. R800 1030

Patent No. 6,005,950

Reamp® JCR

™

THE ORIGINAL REAMP

The Reamp JCR is the ‘next generation’ Reamper that precisely follows the original design by
inventor John Cuniberti and used on countless recording by artists as diverse as Joe Satriani,
U2, the Rolling Stones, Van Halen and many others. The design begins with a balance line level
input that feeds Cuniberti’s original ‘made in the USA’ custom wound transformer and circuit that
together act as the audio engine while converting the signal to a hi-Z output for the guitar amp or
pedals . A fully variable level control allows precise signal level matching. A 3-position fi lter switch
adds extra fl exibility by either taming extra bright amps, eliminating excessive low frequency reso-
nance are simply bypassed to produce the original Reamp tone. A mute switch lets you turn off
the signal locally without altering level controls. This comes in handy when conversing with other
techs or answering a cell phone!

Features

• 100% passive design, does not require local power

• Variable level control to match signals

• Transformer isolation to eliminate ground loops

• Handy fi lter to tame excessive highs or reduce lows

Applications

• Lets you re-amplify guitar and bass tracks

• Used to replace poorly recorded live tracks

• Works equally well on pedals or amplifi ers

• Used to add extra character on vocals or keys

Cool Stuff

• Improves tracks as the recording progresses

• Retains the original design by John Cuniberti

• Phase switch lets you invert the polarity

• Plug and play easy to use

1/4” TRS INPUT: Connects from your recording
workstation and is suitable for both lo-Z and hi-Z
sources. Wired in parallel with the XLR input.

MUTE: silences the 1/4” output from the
Reamp JCR going to the guitar or bass
amplifi er.

LEVEL: Used to control the signal level going from
the Reamp JCR to the guitar or bass amplifi er.

FILTER: Three position switch with high-cut to warm
overly bright amps; low-cut to clean up low end mud
or bypass to go back to the original Reamp circuit.

¼” OUTPUT: Unbalanced instrument level output
connects from the Reamp JCR to amps and effects.
Transformer isolated to eliminate hum and buzz
caused by ground loops.

180° PHASE INVERT: Flips the polarity at the
output to compensate for amps or effects that
invert the phase of the signal.

BOOK END DESIGN: Creates a protective
zone around the jacks and switches.

XLR INPUT: balance input, connects from the
output of your recording system to the Reamp JCR.

John Cuniberti built the fi rst prototype in 1993. The
formal production Reamp came in 1994 with a red
anodized box featuring a Re-Amp logo that was
later changed to Reamp. In 2010 Radial takes the
helm and issues the JCR original Reamp circuit.

RECORD DIRECT

1 2

Record a clean track with a high quality direct box. The player listens
to their amp while the direct signal goes to the recorder. You may
want to record the amp to another track with a microphone.

Direct Sound

Radial J48

Active Direct Box

Radial Engineering Ltd. • © Copyright 2014 all rights reserved • www.radialeng.com • email [e-mail] • Subject to change without notice • Made in Canada

NO SLIP PAD: Provides electrical and mechanical
isolation and keeps the unit from sliding around.

GROUND LIFT: Disconnects ground at the input to
eliminate hum and buzz caused by ground loops.

TRANSFORMER: Custom USA made, isolates
and converts the impedance to properly feed the
guitar amp. Mu-metal shielded for low noise.

I-BEAM CONSTRUCTION: Welded internal
enclosure features ultra rigid I-beam construction
to protect the PC board.

RE-AMPLIFY

Connect the recorders output to the JCR Reamper. Connect effect ped­als between the Reamper and your amp. Play the clean track and mic
the amp. Record as many different amp setups as you like.

Direct Sound

Effect pedals

Amp sound is recorded to a new track

Mic