Overdrive Amp User`s Manual - Ethos Overdrive Guitar Pedal
Contents
1. Allows Hi end adjustment for given applications ACTIVE Footswitch Selects effect indicated by annunciation of yellow When inactive input signal is LED buffered BOOST Footswitch Activates Boost mode in overdrive channel indicated by annunciation of red LED CHANNEL SELECT Selects between clean and overdrive channel Footswitch indicated by annunciation of red LED for Overdrive and green LED for Clean Unit is powered when input plug is inserted Normal Out Speaker Simulator Output Output Power 30 Watts RMS Used for Effects Send Used for Effects Return Not applicable to Clean Channel Turn CW to cut high frequencies Note Specifications are subject to change without notice Page 3 1noAv1 1vqdad 2 eibi MAIA dO L right hand side Note Hi Cut Knob extends of unit 0 75 beyond OTI s9uo WOISND Anoo Boreuy 95001 amman O 3AUOV JO H A F as HO Saud ssvg 3 1adIIN 3183ul Zr dISSV1D 9 NH3QON S3ud ssvd 3 1QaqdIIN 3183ul T zzyr olssv19 ovo 20H NY30OW aliia LNO IH Ss Manual 3 gt Q x w NOILISOd dN 3ALLOV NOLLVSN3dINOO dINV HVLIND change without are subject to notice Specifications Note ETHOS Ovendnive Amp User s Manual Typical Applications Guitar n Broad DI Band Interface Speaker PC PA etc Standard Guitar Speaker Speaker 8 or 16 ohm Note Specifications are subject to change without notice Page 5 ETHOS Ov2. 8
3. ETHOS Ovetndnive Amp User s Manual Provided to you by www customtonesinc com Email roo customtonesinc com Note Specifications are subject to change without notice Page 1 ETHOS Overdrive Amp User s Manual Overview The Ethos Overdrive Amp was inspired by one of the most sought after boutique guitar amplifiers ever made Extensive time and attention to detail were required to emulate the tone and responsiveness of this amplifier The key to Ethos tone is its ability to transition from clean to overdriven tones just by the articulation of the guitar pick or guitar volume control The Ethos not only offers great tone and touch sensitivity but also provides a high degree of flexibility in one compact package The Ethos provides two independent channels with an integral boost function resulting in 3 different footswitch selectable sounds The Ethos can operate in many working situations as well It can be used as a 30 watt guitar amp a guitar amp pedal a DI interface for broad band systems e g PA studio or PC and a preamp that can feed a power amp speaker combination Key Features Dual Independent Channels with EQ Overdrive Clean 30 Watt RMS Output Power into 8 ohms Preamp Boost OD Channel Speaker Simulation Output Guitar Amp Compensation Circuit with Hi Cut Tone Stack Toggles including Brite Modern Classic Jazz Rock Buffered Inactive Mode Mitigates Loading Effects Co
4. endnive Amp User s Manual Power Adapter Included e Input 100 240VAC 47 63 Hz e Wall Outlet Plug Type US 3 prong Note The Ethos Overdrive Amp must only be powered using the power adapter furnished with the unit Use of other power adapters can result in poor performance or damage the Ethos Overdrive Amp Note Specifications are subject to change without notice Page 6 ETHOS Overdrive Amp User s Manual Preamp ToneTips and Frequently Asked Questions TONE TIP When to Use the GAC Switch Using the ETHOS with a Guitar Amp The Guitar Amplifier Compensation or GAC Switch is designed to reduce the degree the guitar amp colors the Ethos Tone so the combination Ethos Guitar amp sounds more like the amp itself The GAC circuit design is based on compensating for tone stacks found in typical Fender and Marshall amps In some cases quitar amps have a more flat response than a Fender or a Marshall For example the Normal Channel on a VOX AC30 has no tone stack In this case the amp is relatively flat and the GAC switch does not need to be engaged Amps that sound like they have more midrange may sound better with the GAC switch off If you are looking for more lows and highs in your ETHOS tone turning off the GAC switch will provide this as well The 90 s version amp has a post OD tone stack In an interesting way turning off the GAC switch can approach this effect where now the amp s tone stack is acting like the po
5. h the Classic TLE switch Yes all previous versions of the Ethos will be available in the Amplifier format What are the speaker impedance requirements The Ethos Overdrive Amp can use speaker impedances 8 ohms and higher The unit is not compatible with 4 ohm speakers What guitar speakers do you recommend using with the Ethos Overdrive Amp Favorite speakers include Celestion G1265 EV12s and Eminence RWB How does the FX port work The FX port provides a signal break point between the output of the Ethos preamp and the input of the power amp This allows the user to post process the Ethos preamp signal before going into the power amp To insert an effect connect the PREAMP OUT to the input of the effect and then connect the output of the effect to the PWR AMP In What happens when the unit is bypassed When the unit is bypassed the input signal is buffered and fed to the power amp In this mode the Ethos operates as a flat band power amp Can the normal Preamp outputs and Power amp run simultaneously Yes all outputs can operate at the same time For example the unit could be used to drive an on stage monitor or guitar speaker while feeding the board with a SPK SIM signal or another guitar amp or power amp with the normal output How should set the GAC switch when I m using the amp The GAC switch should be turned off or in the down position when using the amp Note Specifications are subject to change without notice Page
6. mpact Size packaged in a rugged die cast aluminum chassis Figure 1 Ethos Overdrive Block Diagram Guitar Amp O Compensation GAC Select Clean Channel Channel Select PREAMP POWER OUT AMP Output IN Select Note Specifications are subject to change without notice Page 2 ETHOS Ovendnive Amp User s Manual Specifications Refer to Figure 2 Description IN Jack 1 4 Inch 1Megohm Input Impedance OUT Jack 1 4 Inch 1kohm Source Impedance SPK SIM OUT Jack 1 4 Inch 1kohm Source Impedance SPEAKER OUT Jack inch 8 ohms or 16 ohms PREAMP OUT Jack Y inch 1kohm Source Impedance POWER AMP IN Jack Y inch 1Mohm Input Impedance GAIN Control Determines Gain Level of Preamp BRITE Switch Activate HF Boost in Preamp MODERN CLASSIC Modern Mode 80 s 90 s Tone Stack Switch Classic 70 s Tone Stack JAZZ ROCK Switch Jazz Hi Fi Style Tone Stack Rock Aggressive Mid Range Tone Stack TREBLE Control Controls Treble Response in Preamp Stage MIDDLE Control Controls Midrange Response in Preamp Stage BASS Control Controls Bass Response in Preamp Stage PRESENCE Control Controls Hi Frequency Response Post OD stage VOLUME Control Controls Overall Output Volume of OD channel OUTPUT Select Selects Output Type to Speaker SPK SIM or Select SPK SIM for driving Flat Band Norm Speakers eg PA or Monitor type GAC Switch Activates the guitar amp compensation circuit when placed in the up position HC Control Hi Cut control
7. no trimmers or adjustments as part of this circuit FAQ can t seem to get much difference between the MODERN and CLASSIC switch setting is it only noticeable on certain settings Yes you will notice a significant difference in the settings when the MIDDLE control is set between full CCW and 12 00 In this range the voicings are very different This switch was included since it can offer a great diversity to the pedal The CLASSIC switch setting configures the tone stack to what was used in the early amps Its voicing can be more Fenderish sounding where there is a less low mids The MODERN switch setting reconfigures the tone stack to be more like the 80 90 s amps Here the voicing has more low mids resulting in a thicker tone When the MIDDLE control is turned up greater than 12 00 the difference in settings are not noticeable Note Specifications are subject to change without notice Page 7 ETHOS Overdrive Amp User s Manual Amplfier Frequently Asked Questions How loud is it In comparison to other guitar amps the Ethos Overdrive Amp has approximately the same loudness as a Fender Deluxe Reverb Can I use it as a preamp alone like the original Ethos Yes all features of the original Ethos are available to the user The unit can run safely with no speaker attached Can it be powered using baiteries No The Ethos Overdrive Amp can only be powered by the power adapter supplied with the unit Will the unit be available wit
8. st OD tone stack Using the Ethos Direct or into a Flat Band Power Amp When you are using the Ethos in a DI application or going into a power amp turn off the GAC switch In this application no compensation is required TONE TIP Smoothing Your Tone The ETHOS tone stack is extremely diverse in nature If you are trying to obtain a smoother or silkier OD tone turn down the middle control Some great tones can be had by setting it between 8 00 and 10 00 The higher the middle control is set the more aggressive tone you ll get TONE TIP Using the HI CUT control The Hi Cut HC control is a very effective control that tapers the highs as it is turned clock wise If you need to warm up your tone simply turn up the HC control The HC control affects both the OD and Clean channels Popular settings range between 10 00 and 1 00 FAQ Does the ETHOS use a True Bypass No when the ETHOS is in the in active mode the signal runs through a unity gain buffer The buffer is flat band in response having an input impedance of 1 Megohm and an output impedance of 1k ohm The buffer is very effective in mitigating loading effects downstream of the ETHOS FAQ What does the BOOST switch do and is it adjustable The boost function is set up just like the amp s circuit topology When engaged it reconfigures the tone stack actually isolates portions of it from ground so less mid frequencies are attenuated to ground resulting in a boost effect There are
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