TREX SpinDoctor User manual

SPINDOCTOR
USER MANUAL
OVERDRIVE / PREAMP

CONGRATULATIONS
on your purchase of SpinDoctor, the revolutionary analogue overdrive preamp
from T-Rex Engineering.
Whether you use it as an intelligent distortion pedal or a preamp for live per-
formance or studio recording, SpinDoctor gives you a wealth of options.
Read this manual carefully to learn how to make the most of SpinDoctor in any
situation. Get to know your SpinDoctor well – and it will reward you with all the
gorgeous tube-driven tone your playing deserves.
USING SPINDOCTOR
You’ll find your SpinDoctor’s main controls on the top of the unit.
And using them couldn’t be easier. Here’s what you do:
1. Use the channel switches (A, B, C and D) to select a channel.
2. S et the controls for the channel you’ve selected.
3. Hit STOR E to save your settings.
Main controls
You’ll find the following controls on the top of your SpinDoctor:
CHANNEL switches: Select the channel (A, B, C, D) you want to play
through or edit.
TUBE DRIVE knob: Turn it down for a clean tube sound
– crank it up for more overdrive.
TONE CONTROL knob and BASS, MID, TREB, PRES buttons:
Press a parameter button and use the knob to set the level.
OUT LEVEL knob:
Control the channel’s overall volume.
BOOST button: Hit this for even more overdrive gain.
STORE button: Press to store your channel’s settings.

SETUP OPTIONS
TO MIXER LINE INPUT
GUITAR
GUITAR
GUITAR
FROM GUITAR
FROM GUITAR
CABINET
CABINET
POWER AMP
POWER AMP
TO POWER AMP INPUT
(SET HIGH/LOW BUTTON TO HIGH - BOTTOM POSITION)
TO POWER AMP INPUT
(SET HIGH/LOW BUTTON TO LOW - TOP POSITION)
FROM GUITAR
MIXER
STUDIO PREAMP:
PREAMP WITH
HOWER AMP:
OVERDRIVE PEDAL
WITH COMBO AMP:
INPUTS AND OUTPUTS
Your SpinDoctor features all the input and output options you need to get
the perfect sound in any situation.
Plug your guitar into the INPUT jack, and run a cable from the OUTPUT jack
to your combo amp or power amp, or from the SIM. OUT to a studio mixer or
your computer’s AD converter.
When running SpinDoctor into a combo amp, make sure the HI/LOW button
on the bottom of the unit is in the “up” position (this lowers output).
If you use SpinDoctor as a preamp – either with a power amp or running into
a mixer/AD converter – keep the HI/LOW button in the “down” position.
SpinDoctor makes a great preamp for recording guitar in the studio.
When you’re in the studio, try using the SIM. OUT to simulate the sound
of real speaker cabinet. Use the SIM. LEVEL knob to adjust volume, and the
FREQUENCY button to define the character of your “cabinet”.
Your SpinDoctor also features a MIDI input for controlling the unit
remotely via an external MIDI device. Read on to learn how to use these MIDI
capabilities.

TECHNICAL SPECS
INPUT: 1/4” standard jack
OUTPUT: 1/4” standard jack
SIM. OUT: 1/4” standard jack
MIDI input
Power supply connector
CAUTION!
Use included T-Rex power supply only
Input impedance: >1 MOhm
Output impedance: <10 kOhm
Power supply: 100–240 V AC, 50–60 Hz
Power consumption: max. 30 watts
Size: 255 x 186 x 65 mm
(in box: 370 x 230 x 110 mm)
Shipping weight: 3 kg
Powered by 2 high-grade
T-Rex 12AX7 triode tubes
MIDI SETUP
Your SpinDoctor features a logical, easy-to-use MIDI implementation that lets you extend
the number of SpinDoctor channels from 4 to as many as 127. These channels can be cre-
ated, stored and selected remotely via an external MIDI controller.
SpinDoctor is programmed to communicate via MIDI channel 1. On your MIDI board, use
MIDI programs 5–127 to create and store your additional SpinDoctor channels. When you
switch to one of these channels via your MIDI board, all 4 SpinDoctor channel indicator
lights will light up.
You can also use MIDI to control SpinDoctor channels from your computerbased recording
software. For example, you can store the SpinDoctor channel you used when recording a
song, and call it up automatically each time you open the song for further recording or edit-
ing. For help with using a MIDI controller or recording software, please see the instructions
that came with your controller/software.
TO AMP INPUT
GUITAR
FROM GUITAR FROM MIDI BOARD
FROM MIDI BOARD (CH. 1)
MIDI BOARD (CH. 1)TO SPINDOCTOR
AMP

RoHS
REACh
ABOUT T-REX
Based in Vejle, Denmark, T-Rex Engineering makes classic and sig-
nature eects pedals for the world’s best musicians. Our approach
blends hi-tech innovation with old-world craftsmanship – always
in the service of killer tone.
EU REGULATIONS • ENVIRONMENT PROTECTION
T-Rex accepts and follows the regulations and directives issued
by the EU. We nd these environment protecting regulations very
good, and we are happy to follow them.
T-REX WARRANTY CONDITIONS
T-Rex oers a 2-year warranty on all our products. In the unlikely event of a
malfunction, please contact our technical support at info@t-rex-eects.com
before sending us the product for repair. When the product has been sent to
us at sender’s cost, we will repair or replace your product and send it back to
you - free of charge and usually within 3 weeks (shipping not included). The
product needs to be accompanied by a copy of your receipt, serial number,
return address, phone number, e-mail address and a brief explanation of
the problem. Please note that we cannot replace a product until we have
received it here in Denmark.
The warranty is lost if the product has been damaged by alteration, misuse,
accident, or neglect; or if the product has been repaired or serviced by
persons not authorized by T-Rex. Read more about warranty conditions at
www.t-rex-eects.com.

Steen Meldgaard Laursen
Managing Director
ISSUED IN VEJLE, 2007
Lars Dahl-Jørgensen
Development Director
Sebastian Jensen
Production Director
T-Rex Engineering ApS
www.t-rex-eects.com