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Plexitube

True to the Music

Radial Engineering

INTRODUCTION

Like the original Tonebone Hot British, the Plexitube’s tone and 
distortion philosophy follows the tradition set by legendary Brit-
ish high gain tube amps. 

The Tonebone Plexitube is a two channel tube distortion pedal 
that combines the natural warmth and harmonic generation 
of a 12AX7 tube with the control and saturation of our unique 
multi-stage solid-state drive circuit. This combination provides 
incredible gain with tons of overtones and, when combined with 
our unique passive-interactive EQ, produces four generations of 
Marshall Plexi tones without ever getting muddy. 

The Plexitube has three operational modes. The fi rst mode is 
true-bypass. In true-bypass mode, the clean sound of your amp 
comes through without alteration. The second and third modes 
are distortion channels 1 and 2. For the purposes of this manual 
we will refer to channel-1 as rhythm and channel-2 as lead, as 
this is how most players will use the Plexitube. 

Designed to enhance on-stage functionality, the Plexitube fea-
tures two distinct distortion channels for on-the-fl y transitions be-
tween rhythm and lead settings. Channel-1 has been optimized 
for rhythm with chunky rhythm tones and scooped out mids for a 
thunderous wall-of-sound. Channel-2 closely follows the original 
Hot British for a wide sonic landscape that lets you go from brute 
force rhythm textures to an "in-your-face" screaming solo that 
cuts like a machete.

Lead channel-2 is supplemented with a built-in effects loop that 
enables the guitarist to toggle from a 'dry' rhythm to a 'wet' lead 
with a single foot stomp. For added control, lead channel-2 is 
equipped with a separate drive gain tweaker for fi ne-tuning the 
amount of distortion. 

Using the Plexitube will become second nature as you become 
accustomed to the functions of each control. The best way to get 
there is to experiment, and above all, have fun!

Summary of Contents for TONEBONE PLEXITUBE

Page 1: ...Radial Engineering Ltd 1638 Kebet Way Port Coquitlam BC V3C 5W9 Tel 604 942 1001 Fax 604 942 1010 email info radialeng com www tonebone com PLEXITUBE Owners Manual TUBE DISTORTION...

Page 2: ...ich to explore new sonic landscapes and spur on creativity This manual shows how to operate and maintain your Tonebone To take advantage of all of the wonderful features that have been incorporated in...

Page 3: ...r the purposes of this manual we will refer to channel 1 as rhythm and channel 2 as lead as this is how most players will use the Plexitube Designed to enhance on stage functionality the Plexitube fea...

Page 4: ...n switch used to fatten up the mid range frequencies for more cut and sustain Great for single coil pickups Setting are 12dB 12dB increase at 620Hz 7dB 7dB increase at 390Hz OFF no boost 5 Ch 1 2 CONT...

Page 5: ...kHz compensates for overly bright amps 10 12AX7 vacuum tube The Plexitube uses a tube valve to create harmonically rich bone crushing saturation 11 Ch 1 2 LEVEL controls Used to adjust the overall out...

Page 6: ...e signaling the Plexitube is switched OUT of your signal chain The second footswitch labeled TOGGLE selects between the two Plexitube distortion channels Each channel has its own LED to indicate the P...

Page 7: ...7 and 12dB of mid boost TOGGLE FOOTSWITCH This is used to toggle between distortion channels LED indica tors light up to display the active channel status Note that the Plexitube s channels may be tog...

Page 8: ...sts or cuts the signal by 14 5dB at 100Hz These are very powerful EQ controls and small adjustments will make a big impact TOP END The TOP END switch controls the Plexitube s overall high frequency re...

Page 9: ...ue lead tone but the cool part is that it only takes one foot stomp to get there To use the Plexitube s effects loop you will need an insert cable Insert cables are commonly used to insert an effect i...

Page 10: ...ce the tube To do this gently loosen the 12AX7 tube in the socket by wiggling it back and forth Reassembly 1 Install the PC board to the chassis top Carefully align the potentiometers LEDs and footswi...

Page 11: ...e sure pedal is not connected backwards by reversing the input and output If ok check tube If the problem persists see your Tonebone dealer The LEDs do not light up Check the power adaptor to make sur...

Page 12: ...i pedal power supply with the Plexi tube Please check with the manufacturer and your dealer on this mat ter to be sure Some pedalboard power supplies are equipped with 16VDC outputs and the Tonebones...

Page 13: ...y ear to nd the spot that sounds best with your setup Q Can I use the Plexitube for two different lead tones Yes of course We only refer to channel 1 as the rhythm chan nel for reference sake The Plex...

Page 14: ...12 Radial Engineering Plexitube True to the Music EXAMPLE SETTING...

Page 15: ...13 Radial Engineering Plexitube True to the Music...

Page 16: ...14 Radial Engineering Plexitube True to the Music...

Page 17: ...USER SETTINGS 15 Radial Engineering Plexitube True to the Music...

Page 18: ...16 Radial Engineering Plexitube True to the Music USER SETTINGS...

Page 19: ...17 Radial Engineering Plexitube True to the Music USER SETTINGS...

Page 20: ...product must be returned prepaid in the original shipping container or equivalent to Radial Engineering or to an authorized repair centre and you must assume the risk of loss or damage A copy of the...

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