Variac - Subdecay
Contents
1. INC 2014 Bass Controls the bass content Similar to the bass control found in many tube amplifiers Highly interactive with the pentodes and pre amp controls Typically you will not want to run the bass preamp and pentodes all at maxium but we make pedals not rules m m Pre amp Controls the gain toa simulated hot rodded tube preamp The preamp is situated before the tone stack Use more preamp gain for more modern sounds This is an awkward left over space We re pretty sure you never RTFM anyway Right LED INDICATOR BYPASS SWITCH LIGHNING BOLT Because lightning is freaking awsome PLAY IT LOUD Part of guitar tone is simply turning up and letting it interact with volume in the room The Variac is designed to react like an amp when it s loud It s a great pedal for practicing without waking the neighbors but do yourself a favor and turn it up whenever you can2. SUBDECAY V E R D RI V E USER GUIDE VERSION 1 Q0A Introduction Rock guitar tone has long been defined by overdriven tube amplifiers In the early days those sounds were primarily power tubes the output transformer and speakers being pushed until they had nothing left to give Evolution of amplifier design introduced more preamp distortion and more midrange and treble gain keep the sound focused We set out to capture the tones of AC DC early Van Halen Judas Priest GnR and Tom Morello and even some of those 80 s hair sounds aquanet and pointy neon guitars not included We carefully listened to some of our favorite rock and old school metal We tested and analyzed individual tube circuits at high voltage to figure out what they were really doing We studied the topology of the amps those artists actually used especially variations of Marshall s 1987 and 1959 based circuits More than another amp in a box the Variac Overdrive places an entire era of rock sound right under your foot So turn it up and get ready to ROCK What does the Variac Overdrive do The Variac Overdrive emulates both a hot rodded tube preamp and a power amp with two phase inverter options Chords sound huge Leads sing with clarity It brings pinch harmonics out with ease The Variac Overdrive is an expressive drive pedal with the articulation and touch sensitivity of a tube amplifier The controls are all interactive along with hidden controls l
3. ike the power supply Dynamics and headroom are all affected by the power supply Powering from 7 5 to 18 VDC opens up even more possibilities Preamp controls the preamp gain Pentodes controls the power amp gain Tone Stack The treble and bass knobs control the frequency response The tone stack is situated between the preamp and pentodes gain Cathodyne LTP switch Two common tube amp phase inverters Cathodyne setting has more bass and a looser response LIP long tail pair for tightening up the low end and a more focused sound Volume makes the effect louder or quieter if you are in to that kind of thing Check the last page of this user guide for more information on the control matrix TE Of tube preamp phase inverter tube power amp Simplified circuit architecture PRE AMP GAIN PENTODES GAIN OUTPUT CATHOTYNE LONG TAIL PAIR INPUT Specifications Input impedance 500K Output impedance Less than 5K Power by battery or DC adapter see back for more details Operation and care All the regular stuff here Don t leave it out in the rain or put it in an oven If you want to clean it use a towel don t put it in the washing machine Send it back to us if it stops working Warranty Subdecay Studios offers a 3 year limited warranty from the purchase date to the original purchaser This warranty does not cover polar bear attacks willful destroyment using your pedal as a hammer or the neglec
4. t of the user It does not cover the finish paint or any external superficial damage Any unauthorized repairs or modifications voids the warranty CONTROLS Treble Controls treble content Similar to the treble control in many tube amplifiers Highly interactive with the pentodes and pre amp controls Pentodes Controls the gain the power amp gain Use more pentodes gain for open vintage sounds VOLUME Makes it louder or quieter if you are in to that kind of thing DC input Powered by a dedicated Class Il regulated power supply with a negative center 2 1mm barrel plug Current draw under normal operation at 9VDC is less than 10mA Designed to operate at from 7 5 volts to 18 volts labeled as 9 18VDC to avoid confusion If using a daisy chain power supply all other units on the power supply MUST be negative ground Powering this pedal above 20VDC may cause permanent damage so just dont do it Phase inverter switch Select between cahtodyne and LTP long tail pair Cathodyne has loose dynamics with more bass response and works well with smaller amps LTP is tighter and more focused Set to LTP for larger amps REBLE CATHODYNE OUTPUT SUBDECAY For a more information on using your Variac overdrive please visit http www subdecay com variac overdrive Subdecay Studios Inc support subdecay com www subdecay com SUBDECAY STUDIOS
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