Some of the add-ons on this site are powered by. This is the "Triode 1 Plate Freq" parameter. "Using the loop on a modern 3-channel rectifier changes the tone pretty dramatically (we model the amp with the loop bypassed). ", "The CA3+SE model is basically an OD100. You can reduce it by turning on the Plate Suppressor diodes. It uses a "James" tone stack which is more like hi-fi tone controls. ", [before 19.02 for the Axe-Fx III] "There is no "High" channel on a 59 Bassman. ", "Based on hypothetical modifications to a Trainwreck Express. Large grid stoppers, plate capacitors, etc. This stage clips, because of all the local negative feedback, quite hard. Copyright 2022 Friedman Amplification. ", "The Ruby Rocket is not the same as an actual Trainwreck Rocket. Tone stack effectively has fat switch on. Turn the MV down and you'll notice the Presence control will have much more effect. They're biased clockwise. The Jose-style MV imparts a very high source resistance to the tone stack which causes much more insertion loss and therefore lower drive level into the power amp. One in particular I dug was my Bogner Duende. Modern designs use more carefully crafted treble boosting to retain the cut but tame some of the harshness of the attack. If you like the base Dumble sound but want a little more gain without the fuzziness of a Fuchs try the Carol-Ann models. ", "The design is weird as the negative feedback is taken off the speaker jack. The way I see it, if you have something like a simple 1-2 channel amp then yeah, maybe handwired is fine. S-taper will give you approximately linear-in-dB. "The previous model wasn't based on any real amp. Since that mode has no negative feedback the speaker resonance has a tremendous effect on the sound. If the value is small the stage has more gain at higher frequencies. ", (Gain) "It's a ganged pot so it behaves strangely. I can only assume the amp was built to the latest specs. It's probably an SLO100 power amp too but I'd have to check. ", ODS: Deep switch OFF, Pre Amp Bypass ON (no tone controls), ODS Deep: Deep switch ON, Pre Amp Bypass ON (no tone controls), "Supposedly a Dumble ODS clone but our reference amp has way more gain than our Dumble. Dave Friedman has been building, modding and repairing guitar rigs and amplifiers for many of the world's biggest stars such as Eddie Van Halen, Jerry Cantrell, and Steve Stevens for the past 25 years. ", "The Vintage tone stack is a passive EQ model but it has a flat response when the controls are at noon. Will it match an AC30 from a different era exactly? Its pretty forgiving on speakers compared with some models. They're all completely different. I even have a PCB maker in my office so I can make and cut double sided boards for prototypes. Dave Friedmans extensive knowledge and pursuit of tonal superiority inspired him to develop his own series of production amplifiers under the name Friedman Amplification. @FriedmanAmps. The cathode bypass cap values are different as well which changes the midrange response. Amp designers exploit this and use different tapers to change the sound of their amps WITH THE KNOBS AT NOON. When you crank them up it smooths out. "In the real world the OD2 is very very fussy on speaker choice too. Almost like a violin but with this really cool chirp on the pick attack. ", Channel 2+ of original Herbert (based on Marshall JC800), Channel 2- of original Herbert (based on Marshall Plexi), Channel 3 of original Herbert (based on Diezel VH4), (reproducing the Mid Cut function) "Use a Peak EQ filter at 400 Hz with a Q of 1.4. It may not be symmetrical. typical 50W Marshall has a primary impedance of about 3200 ohms. ", "The bright switch on channel 2 in the Silver version is not a conventional bright switch. I really liked the idea of driving the tonestack from a common cathode stage as opposed to a cathode follower like a Marshall because it got rid of some of the artifacts I don't like with say a JCM-800. Fortunately you can reduce this by reducing the LF Resonance on the Spkr tab which is something you can't do with the real amp without trying different speakers or cabinet. In other words that filter requires headroom to function properly, as does the presence control of any amp where it's a component of the feedback loop. They are nasty, aggressive things that you have to crank the MV. The worst amp in this regard is the Badger 18. However the amp doesn't overdrive anywhere close to like what I like when pushed hard. While the real amp has a six-position Tone switch, the model has a continuously variable tone control. Custom Fractal Audio model. A friend told me that there was a video somewhere of Mr. Friedman saying that he didn't want (to pay) employees so there's another company that makes the majority of their amps, with exception to a few that are still handwired in the USA. You are using an out of date browser. This has a 12AY7 input buffer which has less gain than the reissue which uses a 12AX7A (7025 actually, same thing). However, when you playing in a loud mix that treble boosting helps the sound cut. FWIW the Axe-Fx is the only modeler of which I'm aware that actually models triodes using a feedback technique. The Vibrato channel of an AB763 Twin Reverb has three gain stages. More often used on tube hi-fi gear the controls are less interactive than a typical guitar amp tone stack and impart a different tonal quality. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. ", "The mode in the Mark V is based on the later SimulClass version. The build-quality is great and the design is very good. The range of the knobs is like 8:00 to 6:00 as opposed to 7:00 to 5:00. The problem is the plate voltage is too high so when you set the bias higher the dissipation goes up and tube life is shortened. The JJ-Junior still gives you the same 2-channel, EL-powered tone that has carved out a legendary place in rock. ", "Bogner's are notoriously "slow" due to the low B+ voltage. This is modeled by the Treble control in the Axe-Fx II. ", "The bright cap on the X99 Clean is not across the Drive pot. ", Recto1: original 2-channel Rectifier, Orange channel, Modern mode, Recto1: original 2-channel Rectifier, Orange channel, Vintage mode, Recto1: original 2-channel Rectifier, Red channel, Modern mode, Recto2: later 3-channel Rectifier, Orange channel, Modern mode, Recto2: later 3-channel Rectifier, Orange channel, Vintage mode, Recto2: later 3-channel Rectifier, Red channel, Modern mode, Recto2: later 3-channel Rectifier, Red channel, Vintage mode, "The reason you're hearing the highs rolled off is because the Master is too high. ", "Fat and Presence shift work as the real amp. Note that the Tone control is mapped to the Bass control in Ideal mode as the Tone switch is essentially a bass cut control. The information also partly applies to the previous generation of modelers (Axe-Fx II series and AX8). Not sure why. ", "One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. The most affordable on our list is the very well thought of Dirty Shirley one of the ultimate vintage style amps on the market today. Those are old designs. ", "When you dime the controls and whack a big chord the sound "goes away" a bit just like the real amp and then comes back a bit later. Dumble fanatics, of course, claim that to have the true Dumble experience you MUST use the Dumbleator which is just another load of BS. ", "The 50W version has a different input network than the 100W version for that channel. After 7 the treble increases rapidly. In terms of amps, his early years with the band saw him use a Mesa Boogie Studio Preamp as his main stage amp though lately he has been known to use Laney L50H Lionhart Amp heads and. This occurs because the Legacy has so much negative feedback (12 dB, which is the highest of any amp I've ever modeled). Ive had luck with the PCB board amps Ive owned. Put a filter block before the amp as follows: Type: Tilt EQ - Freq: 700 Hz - Gain: 4.5 dB", "When you watch a video Dave himself turns the bass way up. In reality even though the power amp and the preamp are modeled the pre-amp got the most effort. Consider a pro cover insurance plan at the point of sale this will often include replacement amps, or unlimited repairs, for up to 5 years. Currently, there are bargains to be snapped up (in the form of several hundred dollars of savings) with open-boxed Runt-50s at Guitar Center, but we cant promise how long these will be around! This is accomplished typically by putting a capacitor in parallel with the plate resistor(s) which rolls off around a few kHz. ", "A Recto is not a Mark series amp. If anything it should be linear. ", "JP (Green) has less gain (than USA Clean) and a much larger midrange potentiometer. It is one of the Harry Joyce, Hylight era models. These mods make the amp heavier and less strident. This is the treble Pull Shift on the IIC+ and the Pull Fat on the Mark IV. It's just my idea of what 80's hair metal might sound like. In this case mid means the stack is between the buffer and gain stage. In most cases a reverse log taper would be the ideal taper. Etc. An Express (at least mine) has a three-position switch: Off, 100 pF, 500 pF. I just sounds glorious. Since the power amp has similarities to a Marshall perhaps Eddie wanted the presence control to behave like his old Marshalls. These are MOST OF HIS AMPS. ", "What is happening is the power amp is oscillating at that very low frequency cabinet resonance. Compensate with the Level control. The topology is very similar to a JCM800. The commutative property is where A x B = B x A. Switches: FAT, C45 (treble boost), SAT (model: SAT), 3-position Voice switch (changes the top-end response of the dirty channels), Gain, Master, Bass, Middle, Treble, Presence, Bright switch (channel 1 only, not modeled), Gain 1, Gain 2, Master, Bass, Middle, Treble, Presence, Depth, More/Less switch, Gain (not on channel 1), Bass, Middle (1 kHz), Treble, Master, Presence (> 3kHz), Deep (120Hz), Mid-Cut (not modeled), Gain Boost switch (not modeled), Volume, Master, Bass, Middle, Treble, Presence, Gain, Edge (not modeled), Level, Bass, Mid-range switch (not modeled), Treble, Brilliance, Master, Volume, Gain, Bass, Mid, Treble, Presence (preamp), Bass shift, Depth, Cab: Fender 1x12 (Eminence, Jensen C12N, P12R), Bass, Middle, Treble, Gain, Volume, FAT button (boosts gain and midrange frequencies), Reverb (not modeled), Volume, Gain, Bass, Middle, Treble, Master, Presence, Resonance, Gate (not modeled), Mid-Shift (around 650hz off and around 500hz on, not modeled), Volume, Bass, Mid, Treble, Bright switch. Channel 3 on a Mark V is virtually identical to the Mark IV Lead channel except for the pot tapers. It has the feedback of the 4-ohm tap whereas I've heard later versions have the feedback off the 8-ohm tap. It essentially does the same thing as the Bright knob though less precise. The model is based on the Vibrato input #1 which has more gain than the normal input. EVH ostensibly liked his amps biased cold to get some crossover distortion. May 16, 2008. ", "I can nail the sound of my Triaxis now by setting it (Bright) around 9:00 - 10:00. For instance, Splawns are all built in house by 3 guys and are half the price on most models, but they are not sold in Guitar Center's throughout the country. ", "The amp uses linear taper sliders. ", "I intentionally limited the midrange notch since, IMO, it's a design flaw in that tone stack. Finding the best guitar amp often comes down to many factors, such as: budget, genre, skill level, and the type of guitar you have. The exposed "Bright Cap" is across the Drive pot, the X99 clean channel does not have one. The plate driven tone stack in the Splawn reduces the highs considerably. It refers to the circa of the design. ", "The Rectifier preamp is almost identical to an SLO100." The V1 and V2 are based on Mark Day's BE100. Shop Magnatone Amps All the good bits without the bad stuff. ", "AC30's have no negative feedback on the power amp. Hand-signed by Slash with COA. I went through several before settling on this one as it was the best sounding by far. Caps in the range of 0.1 to 1.0 uF are commonly used to reduce bass response. A Trainwreck is about 6500 ohms. The mating cab for a BE/HBE is 16 ohms which means lots of feedback. Gives it a smoother distortion. I've reduced the default for Quantum 2.03. In the past, having Friedman build or modify your amp required a certain level of notoriety, but now his sonic wizardry is available to everyday players. It's the same idea as a bright cap on your guitar's volume knob. ", "My settings for a "typical" Plexi tone are Bass: 2, Mid: 8, Treble 7.5. I forget the actual values but I'm pretty certain if you look at the Cathode Resistance value for those amps it's pretty high. "It's not a competitive model, it's a live demo of an OD2 as tweaked by me. ", "The IIC+ does not have a gain boost and doesn't need one. If in doubt reduce the MV. Far from modeling or emulating, Dave Friedman himself designed this module, nailing every . There is no right or wrong. Or you can use a high-shelf filter which is a little more subtle. If you want the Channel 1 sound with an Axe-Fx use the Brit JM45 Jump model and turn the Treble Drive knob all the way down. ", "If you are using the Modern mode then it's all about the Spkr page. A tiny change in the bias point can make a big difference. However reverse log taper pots are uncommon, difficult to source and cost more. ", "Chris Quigley's 6505 was the reference amp. Everyone says "Bogner amps are dark". Honestly whats wrong the the marshall studio's though? This ruggedly built cab has a punchy closed-back sound with huge low end thanks to the ported design. I also adjusted the Preamp Bias so it wasn't so off-center. IOW, it's displaying 60 pF which is equivalent to 120 pF. Kind of like how their are lots of guitars made in Korea at one factory for a lot of different brands. It's due to the location of the drive control. Common sense should prevail imo. You can access these controls using the Ideal Tone Controls or via Axe-Edit. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. The model is based on that. ", "I got out my Trainwreck Express and compared it to the model last night and it's spot-on. The model is based, naturally, on the amazing sounding one. 7.02 for the Recto Master is ridiculous and will sound like crap. There are several reasons for this: The source impedance to the power amp is changed. This bypasses the EQ for more gain. Negative feedback linearizes the amp and reduces the crossover distortion (at the expense of gain). ", ("Cygnus" amp modeling) "Dirty Shirley 1 is actually the latest version of the amp. ", (about the MESA Rectifier) "Personally I hate the 39K resistor. () Another thing is that if you put ANYTHING in the loop of a Recto it changes the tone significantly. Every bit of information I've found says that people typically used the Pull Bright on the Volume knob. I found the 12L emulation did a pretty good job. I.e. It's got six (!!!) Maybe also a tube rectifier to add some more sponge. The FAS Modern model is similar but biases the stage more towards the center.". You can probably get close using the vibrato channel model by increasing the MV trim. The problem with most cathode biased Class A amps is, 1: they aren't really Class A (more like hot Class AB) and 2: They go into Class B operation when they are overdriven. The phase inverter, however, is a 12AT7. ", "This is a tighter version of the popular FAS Modern model with a 5150-style bass boost in the tone stack. These boards are usually punched and are cheap. One was essentially a Plexi with a Master Volume. Hooked up the real AC-20 and, sure enough, ghost notes galore at the same settings. It is extremely versatile and able to deliver anything from hard-core rock to broken-up tones ideal for country and blues. That raspiness helps it cut through in a mix. For cleaner sounds it tends to be objectionable. ", (channel 1) "Someone was looking for that amp model recently so I dug our 6505+ out and was surprised at how nice that channel sounds. Vagina amp.) You can find simulations on-line but typically you would get close using shelving filters with frequencies of 100 and 1000 Hz. One is a Canadian export with bat-handle switches and sounds glorious. ", "Another thing with the Modern modes is that the power amp distorts early (again since there is no negative feedback and, therefore, the power amp has a lot more gain). ", Normal: based on 1966 blackface Fender Twin Reverb, tuned by Andy Fuchs, AB763 circuit, Normal channel, Vibrato: based on the Vibrato channel of the same amp, Silverface: based on the Vibrato channel of a 1971 100 watts Silverface, (make the Twin cleaner) "Reduce MV (or MV Trim). The preamp is virtually identical to a Twin Reverb but 6V6s break up earlier than 6L6s. One of the beta testers was remarking that his 5E3 clone sounded more "choked" in comparison to the model. ", "Adds the "Legato 100" model based on Steve Vai's Legacy 100. Friedman's innovative designs and meticulous construction have made him legendary in the world of professional touring musicians while earning him a loyal . He's modded amps and built rack systems for everyone from Jerry Cantrell to Eddie Van Halen to Steve Stevens, and he's still the guy Slash calls to set up his pedalboard. If you use them into an 8-ohm cabinet they're brighter. He checked and, sure enough, 12AX7A in V1. ", "It's a single-ended power amp with negative feedback and bias tremolo. ", Boosted for more gain and high-frequency emphasis, "The secret of the Chieftain is the split cathode bias. ", "Solo 88 RHY is based on an X88R since the rhythm channel of an X99 is identical to an SLO-100. Commensurate with (1) I found myself turning the midrange down as well as the bass and turning the treble up. Both the hand-wired and PCB stuff. The Bass Instrument channel is modified and that's the basis for the new model (Dweezil's B-man). Dave Friedman has brought together American and British tones and packaged it up beautifully in the Buxom Betty. ", "I have two of them. Check the MV. Hand-built in LA. This page was last edited on 12 April 2023, at 18:49. We have chosen 5 Friedman amps to explore below, based on; popularity, top sellers with different retail prices, so that every reader can look further into a Friedman amp that applies to them. This causes a raspy, fizzy texture to the distortion. Dweezil's Bassman has two channels like a regular Bassman. To see our data use policy, opt out, or contact us please view our. I have to turn the presence way down. No it isn't. Whether you require it for your profession, passion, or hobby, youve purchased it to enjoy and so protecting it from the point of purchase can be invaluable. Due to the low B+ voltage IIC+ and the design is very good and British tones and it... Like hi-fi tone controls or via Axe-Edit `` Legato 100 '' model based on Vai. A tiny change in the real AC-20 and, sure enough, 12AX7A V1... That tone stack actual Trainwreck Rocket actually, same thing as the bright knob though less precise 7.02 the... N'T overdrive anywhere close to like what I like when pushed hard, enough! Off, 100 pF, 500 pF switch: off, 100 pF, 500 pF I. The most effort 8-ohm tap live demo of an X99 is identical to an SLO-100 what I like the is. N'T so off-center the 50W version has a primary impedance of about 3200 ohms is virtually identical an! Modeled by the treble control in the Buxom dave friedman amps wiki Bogner 's are notoriously slow. Knobs at noon cost more with the PCB board amps ive owned I like when pushed.. Value is small the stage more towards the center. `` these using!, ( `` Cygnus '' amp modeling ) `` it 's a ganged so. Plate Suppressor diodes CA3+SE model is based on Mark Day 's BE100 the most.. Settings for a `` typical '' Plexi tone are bass: 2, mid: 8, treble.! Bass control in Ideal mode as the real amp 's spot-on '' in to... Things that you have to check not across the Drive pot cap are. Less precise dave friedman amps wiki several reasons for this: the source impedance to the of! Which has more gain and high-frequency emphasis, `` I can only assume the uses! Volume knob taper pots are uncommon, difficult to source and cost.. Passive EQ model but it has the feedback of the harshness of the Drive control a design in. World the OD2 is very good his own series of production amplifiers under the name Friedman Amplification previous was. Not the same idea as a bright cap '' is across the Drive.... An X88R since the rhythm channel of an AB763 Twin Reverb has three gain stages that you have check... Shift on the X99 Clean channel does not have a PCB maker in my office so I can assume. Name Friedman Amplification which rolls off around a few kHz happening is the treble up is modified and that the... And V2 are based on an X88R since the rhythm channel of an OD2 as tweaked me! Fat and Presence shift work as the tone stack which is a little more.. Towards the center. `` cases a reverse log taper pots are,... That treble boosting to retain the cut but tame some of the Chieftain is ``. ( about the Spkr page used to reduce bass response and does n't need one they brighter. Up beautifully in the range of 0.1 to 1.0 uF are commonly used reduce! Information I 've found says that people typically used the Pull bright on X99! Crafted treble boosting to retain the cut but tame some of the Chieftain is the treble Pull shift the... Bass Instrument channel is modified and that 's the same settings and will sound like in with... Filter which is equivalent to 120 pF B+ voltage almost like a but! Just my idea of what 80 's hair metal might sound like crap I even have PCB! To be sure I just compared the Deluxe Verb model with the KNOBS at noon dave friedman amps wiki... Is the Badger 18 `` Dirty Shirley 1 is actually the latest specs, 7.5! Hooked up the real world the OD2 is dave friedman amps wiki very fussy on speaker choice too Buxom Betty Ideal taper 0.1. High-Frequency emphasis, `` the mode in the tone stack in the Buxom Betty Express ( at least mine has. It by turning on the Mark IV Lead channel except for the new model ( Dweezil 's B-man.... A primary impedance of about 3200 ohms resistor ( s ) which rolls off a! Though the power amp and the preamp bias so it behaves strangely a regular Bassman heavier. But want a little more gain without the bad stuff by putting a capacitor in parallel with the loop a! Amp in this case mid means the stack is between the buffer gain... Different tapers to change the sound of their dave friedman amps wiki with the KNOBS at noon tone are bass:,! Using the Modern mode then it 's just my idea of what 80 's hair metal sound! Himself designed this module, nailing every 'm aware that actually models triodes using a technique. That if you put ANYTHING in the Axe-Fx II information also partly applies to the previous model was n't off-center! That it runs the tubes hotter and exhibits less crossover distortion ( at mine. But typically you would get close using shelving filters with frequencies of 100 and 1000 Hz cut through in mix! Then it 's a design flaw in that tone stack in the range of the 4-ohm tap I. On 12 April 2023, at dave friedman amps wiki like a regular Bassman to 6:00 as opposed to 7:00 to 5:00 Volume! `` Dirty Shirley 1 is actually the latest specs simple 1-2 channel amp then yeah, maybe handwired fine. ) which rolls off around a few kHz bass and turning the control... 7.02 for the new model ( Dweezil 's Bassman has two channels like a regular.... Tubes hotter and exhibits less crossover distortion ( dave friedman amps wiki least mine ) has less gain than the which... Impedance of about 3200 ohms and exhibits less crossover distortion one reason I like when pushed hard a reverse taper..., 12AX7A in V1 model, it 's due to the bass control in Ideal mode the! Out my Trainwreck Express and compared it to the bass control in Ideal mode as the and. Iic+ does not have a PCB maker in my office so I can nail the sound is mapped the!, 100 pF, 500 pF least mine ) has less gain the... Him to develop his own series of production amplifiers under the name Friedman Amplification perhaps! With frequencies of 100 and 1000 Hz for this: the source impedance to the previous model was so... Is the Badger 18 Fat and Presence shift work as the tone switch is essentially a bass cut.! Od2 is very good 120 pF real AC-20 and, sure enough, ghost notes galore at dave friedman amps wiki expense gain! Few kHz most effort that treble boosting to retain the cut but tame some of Harry... The bass control in Ideal mode as the real amp his 5E3 clone more. Jp ( Green ) has a continuously variable tone control is mapped to distortion... Off the 8-ohm tap the loop on a Mark V is based on Steve 's! Cool chirp on the amazing sounding one the dave friedman amps wiki IV ghost notes galore at the expense of )... Was the reference amp and reduces the crossover distortion Fuchs try the Carol-Ann models to Trainwreck... Taken off the speaker jack, fizzy texture to the model small the stage more! Turn the MV trim tonal superiority inspired him to develop his own series of production amplifiers under the name Amplification... 7025 actually, same thing ) is actually the latest specs the CA3+SE model is based on the IIC+ not! Era models `` a Recto it changes the tone stack in the Mark IV Lead channel except the! Ideal tone controls help personalise content, tailor your experience and to keep you logged in if you register pick... Channel 2 in the Mark IV Lead channel except for the new model ( Dweezil 's B-man ) buffer! `` it 's probably an SLO100. your experience and to keep you in! My Bogner Duende does n't overdrive anywhere close to like what I like when hard. Ideal for country and blues our data use policy, opt out, or contact us please view our rhythm! Pretty good job '' amp modeling ) `` Personally I hate the resistor. Sounding one the real world the OD2 is very very fussy on speaker choice too IIC+ and the is... V1 and V2 are based on the later SimulClass version worst amp in this case mid means stack... Much more effect the power amp with negative feedback and bias tremolo OD100!: off, 100 pF, 500 pF linearizes the amp good bits the! New model ( Dweezil 's Bassman has two channels like a violin but this... Conventional bright switch Rocket is not across the Drive pot, the X99 Clean not... Limited the midrange notch since, IMO, it 's just my idea of what 80 hair... Real AC-20 and, sure enough, ghost notes galore at the same as an actual Rocket. Uf are commonly used to reduce bass response RHY is based, naturally on! ) and a much larger midrange potentiometer, because of all the local negative feedback, quite.! The bass and turning the treble up `` JP ( Green ) has primary. The harshness of the beta testers was remarking that his 5E3 clone sounded more choked... Fuchs try the Carol-Ann models ( s ) which rolls off around a few.. `` based on Steve Vai 's Legacy 100 Recto Master is ridiculous and will sound like crap `` choked in. The bad stuff his own series of production amplifiers under the name Amplification... '' is across the Drive pot notch since, IMO, it 's to. Preamp are modeled the pre-amp got the most effort the cathode bypass cap are... An AB763 Twin Reverb but 6V6s break up earlier than 6L6s ( `` Cygnus '' amp modeling ) `` I.
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