He loaned it to me because it was one of his favorite amps and I can see why. Friedman's designs are a bit odd in that he takes the feedback off the speaker jack rather than off a transformer tap. If you want that chimey AC30 sound you put an EQ before it and suck out some mids. One of them has a different value bright cap than the one with the same Gain pot. No they aren't. ", (Cygnus) "All the Friedman models are now based on the latest amp. When Friedman began building his own amps, he . But the heart and soul of Detroit are its people, who are unwavering in the task of rebuilding it, and who are certain that it can return to the greatness for which it was once known. Since the tone stack is pre-distortion you need to do your post distortion tone shaping using the EQ. G maybe) Dual Rectifier and a new Dual Rectifier. As you increase gain you want less bass into the distortion stages so the idea is you turn the bass down. Iconic sound in a compact, manageable format. I just sounds glorious. This type replicates the active EQ used in the JMP-1 preamp. Mesa always says things like "sounds the same as a IIC+" but the circuits are different and, probably most important, the knob tapers are completely different. I own three of them and they are that fizzy. The tone stack has no treble control. With a 20 watt compact combo, the JJ-Junior lets you take the stage, studio, or jam session with total confidence. ", A Mark V is a greatest hits of the Mark IV and IIC+. [5] In 2010, three Fridmann-produced albums were listed on the Rolling Stone 100 Best Albums of The Decade: MGMT's Oracular Spectacular, The Flaming Lips' Yoshimi Battles The Pink Robots, and Sleater-Kinney's The Woods.[6]. This happens when the pots don't have a flat spot and/or the pot is rotated within the mounting hole. Crude. Too much causes excessive even-order harmonics which makes things fuzzy and indistinct. I emailed Mr Dave Friedman a few months back and I asked if he could build me a simple single channel amp that's built to Ed's spec, something with a variac switch that drops the voltage similar to my Phil X amp. Shared: Presence and Balls, Channels 2 and 3: Gain, Level, Bass, Mid, Treble, Boost switch, Edge switch (changes tone stack). Shared: Master, Presence, Excursion, Boost switch (not modeled), Gain, Bass, Middle, Treble, Master, Presence, Bright switch (Normal channel only), Depth (with Depth mod), Gain, Bass, Middle, Treble, Volume, Bright switch (Clean and Rhythm channels only), Gain, Bass, Middle, Treble, Volume, Bright switch, Resonance, Presence, Bass, Middle, Treble, Master, Gain, Presence, Bass, Middle, Treble, Volume, Gain, Mode, Bass, Middle, Treble, Gain, Power (controls Power Scaling, not modeled), Drive (acts as Master with Power at 10), Power tubes: EL84 (Badger 18), EL34 (Badger 30), Volume, Bass, Middle (Vibrato channel only), Treble, Bright switch, Reverb (not modeled), Vibrato (not modeled), Drive, Gain, Treble, Mid, Bass, Presence, Master, Voicing (not modeled), Vibrato channel: Volume, Bright switch, Treble, Bass, Tremolo controls, Gain, Treble, Mid, Bass, Normal / Tight switch, Presence, Reverb (not modeled), Master, attenuator (not modeled), Custom Fractal Audio model of a generic tube preamp, Treble, Mid, Bass, Gain, Master, Lead Gain, Pull Bright. () It's too much bass for me so I turn down the Depth and reduce Negative Feedback a bit. ", "It does classic rock extremely well and has one of the best clean channels I've ever designed. ", "Maybe the best clean model IMO. My JJ could be made on the moon for all I care =D. It's a wicked amp but not something I would recommend for anything but large gigs. ", "AC-30's have a poorly designed cathode follower. I have to turn the presence way down. ", "I think what people like about this amp is the same reason people like the BE/HBE. It is equivalent to the Drive knob in the Axe. ", Clean channel with PAB (Pre-Amp Bypass) OFF, "The model is of a 100w 6L6 BludoDrive Ojai by Bludotone amps, using Fractal's MIMIC process. You already have all those models., "Having owned multiple Mark IV's, multiple Triaxis's and a variety of other Boogie products, I can tell that the Mark series in general are a bitch to dial in. Mu followers address some of the problems of cathode followers. A centerpiece of the Friedman Amplification lineup, the Dirty Shirley effortlessly blends the old-school rock tones of late '60s England . This amp, however, is liked by many so that just goes to show that some people like that. 7.02 is faithful to the actual amps whereas previous firmwares were more idealized. This page was last edited on 12 April 2023, at 18:49. If you want "active" EQ you need to set the type to Active. The Vibrato channel of an AB763 Twin Reverb has three gain stages. Since V1 is running clean you can get more gain by simply increasing Input Trim. When you hit the note there's this blast of high end that rapidly decays so it has an almost vocal quality. Both in mint condition. Made from Baltic Birch, and handcrafted with pride in the USA this is a sturdy build that can be relied upon on stage or the road. ", "Mesa claims it's based on the IIC+ but it's different. This is equivalent to the Bright switch under the Treble control on the model. "I gigged a Triaxis for years and I would have the knobs pretty much at noon (5.0). ", "The values for the Deluxe Reverb model are based on measurements of an actual 65 Deluxe Reverb, not some hypothetical values on some spec sheet. There may be minor differences in tone due to circuit layout but nothing a few tweaks to the EQ can't fix. ", "The FAS models typically remove or minimize the undesirable characteristics of those old amps. Turns out the snubber cap is the wrong value. 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. 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. ", "A signal divider, which is more correctly called a voltage divider, is calculated by taking the resistance to ground divided by the sum of the resistances. Increase the Damping parameter to increase the negative feedback. Another option is to use the FAS Express model which puts some resistors between the last triode stage and the PI to reduce the bias excursion. Will it match an AC30 from a different era exactly? ", "The actual amp has no grid stopper resistor on the second stage and therefore has LOTS of blocking distortion. Dave has been building, modding and repairing amplifiers for many of the world's biggest stars for the past 25 years. Most issues I have seen involved the shipping company punting these amps around like footballs. I had a live show I did with the Bogner recorded and its one of my favorite shows (for tone) I have had recorded. The second-to-last triode is associated with "Triode 1 Freq" in the advanced parameters. David Friedman was born and raised in Detroit, Michigan. In real life that is tough on tubes as it makes them run very hot. In these cases the Depth knob will default to a value that corresponds to the fixed circuit. ", "So-called Class-A amps (like the AC30) don't actually exhibit much power supply sag because, well, they're Class-A (or nearly). Then if they mount anything to the board the solder area is small and weak. Weve taken the time to draw up 5 highly popular tube amps, from 5 different brands, that are suitable for live performers: Supro Black Magick Reverb 25W 112 Tube Guitar Combo Amp Fender Blues Jr IV Marshall DSL5CR 5W 110 Tube Guitar Combo Amp Orange Amplifiers TremLord-30 30 Watt 1X12 Combo Vox Custom AC15C1 15W 112 Tube Guitar Combo Amp. ", "I did the Buttery model by ear. Poor cathode follower design. I always use the Presence Shift. I bought it off a lawyer (surprise, surprise) some years ago who was in trouble with the IRS. The Devil Put Dinosaurs Here ( . When the grid conducts it shifts the bias point and in those old amps it can shift so much that the tube goes into cutoff prematurely. When it comes to finding the best Friedman amps it can be challenging to determine whether its worth looking at high-end Friedman Amps or if a lower-priced amp would be sufficient for you. By combining the tonal pallet of his BE and HBE circuits, as well as the sparkling cleans of the Buxom Betty in his all-new BE-50 Deluxe amplifier head, Dave Friedman is unleashing his most flexible design yet. Fridmann is an occasional faculty member of SUNY Fredonia, teaching sound recording techniques in the Fredonia School of Music. Dave Friedman is the man behind the signature tones of rock icons Eddie Van Halen, Steve Stevens and Jerry Cantrell. That raspiness helps it cut through in a mix. ", "The real amp is known for it's tremolo so that's why we used the bias trem on the preset. ", "If you want that Recto crunch but not so flubby and fizzy try the SOLO models. The 1x12 Deluxe Tweed Mix cab is the IR. This technique gets around the problem of trying to digitally control a tone stack. Cab Pack 17 has many choices (full disclosure, I produced 5 of the 6 Cabs in that Cab Pack). For typical power amps with reasonable amounts of feedback this isn't an issue. ", (about the difference between the "JP Green" and "USA Clean") "JP has less gain and a much larger midrange potentiometer. Friedman cleverly designed this miniature amp to ensure it is usable in all situations and with its internal load box it isnt necessary to always use the speaker. It's biased too cold. The impedance ratio is about twice that of other amps. The baby sister to the critically acclaimed BE-100, the Friedman Pink Taco was created for guitarists who were craving the Friedman sound in a lightweight, small, compact, and manageable format. And thanks to a handful of Friedmans most requested mods, this 3-channel head is chock full of tone-shaping possibilities and power. The group disbanded in 2022.[7]. If in doubt reduce the MV. AC-30's are very sensitive to the tube type and part tolerances. For all the hoopla surrounding Trainwrecks they're actually pretty bad designs. They are NOT clean amps by any stretch. Fixed bias is just that, the bias point is fixed so the amp doesn't shift into Class B operation when overdriven (not as much anyways, depends on the bias circuit, grid stoppers, etc.). It leaves no room for boards flex and chassis do flex so the board needs a little flex or it puts stress on the parts attached to the board like if there are tube sockets or pots. ", "With the presence control at noon it's roughly neutral. This results in the amp sounding more open and smoother. It uses a "James" tone stack which is more like hi-fi tone controls. However, you'd be surprised that a Twin isn't nearly as clean as you think. The JJ-Junior still gives you the same 2-channel, EL-powered tone that has carved out a legendary place in rock. The Bass and Mid controls are functional and recreate the amp when set to noon. The exposed "Bright Cap" is across the Drive pot, the X99 clean channel does not have one. The JB100 model is basically an OD2 with the entire OD circuit on the board with predefined filters made up of quality components without adjustment through fragile trimmers. The Dirty Shirley has been used by famous guitarists such as Clapton and Hendrix, who solidified aggressive Rock and Blues during the 60s and 70s. ", Marshall Studio Vintage 20 (20W version of 1959 Super Lead Plexi), "The schematic doesn't show it but there's a cathode bypass cap on one of the triode stages. ", "The bright cap value is normalized to a Drive pot of 1M. [13] Match made in heaven with a Strat. As such there's a lot of bass going into the power amp. Certain Bogners and Diezels have a unique type of feedback circuit. I.e., with BMT at 5.0 on the Triaxis the MKIV would be something like 1.0, 6.0, 6.0. Pristine condition. Lowering the Cathode Resistance reduces the crossover distortion as it keeps the amp in Class A operation longer but the tubes run hotter and don't last as long. ", "The BE has very light power supply filtering like old Plexis. The AFS100 models are based on the actual amp but I think my version of #34 sounds more like AFD. The old Dual is the best sounding of the bunch. Los Angeles, California friedmanamplification.com Joined September 2014. The breakup range/tones between is wide and dynamic and can respond to your playing dynamics, getting crunchier as you dig in and cleaner as you play lighter. ", "Added Matchbox D-30 EF86 amp model. Not sure if you watched the video, but Dave says that the Runts (which are PCB) have less issues than the rest of his line. There are no signs it was removed. A Recto preamp is very similar to a SLO100. Just to be sure I just compared the Deluxe Verb model with the reference amp and it's correct. 5.0 for left position (default). 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 probably an SLO100 power amp too but I'd have to check. A quick glance through the extensive roster of Friedman Amplification reveals a who's who of musicians from Eddie Van Halen, Steve Stevens and Jerry Cantrell, to Richie Sambora, Joe Bonamassa, Dave Grohl and Bill Kelliher. If you want the amp to feedback effortlessly on a note, raise the overdrive setting higher combined with the gain, provided you have sufficient volume coming out your speakers to hit your guitar pickups in a reinforcing loop, it will do it! Friedmans amps guts I've seen are nicely made, but nothing to write home about. Takes the guesswork out. ", "Based on a 1981 JMP 50W Master Volume head. ", "What is happening is the power amp is oscillating at that very low frequency cabinet resonance. The Runt-50 works with just about any pedal producing crystal clear effects, loops, and sound. Classic American Clean sound To a classic British crunch. Unique tone stack. - Dave Friedman - Friedman Amplification CEO. It's supposed to be a 12AY7 but many clones have a 12AX7A in V1." IMO it doesn't have enough feedback (100K off the 4-ohm tap). As with the majority of musical instruments and equipment, an amp can be seen as a significant investment. This preserves the treble boost in the upper midrange but softens the attack. It does classic rock extremely well and has one of the 6 Cabs in that takes... All the hoopla surrounding Trainwrecks they 're actually pretty bad designs trying to digitally a! Decays so it has an almost vocal quality me so I turn down the Depth and reduce feedback! 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