", "Based on hypothetical modifications to a Trainwreck Express. ", "FAS Hot Rod is my version of what a modded Marshall should be. The cathode capacitor charges up and the bias point shifts dramatically. Corey James Member The bright cap is different, the mid resistor is much greater, the source impedance of the drive "pot" is different, etc., etc, etc. ", "I always used the Fat switch with the real amp." Implementing second-order filters in a real tube amp is difficult and costly so is rarely seen. This cleaned up this area of the build nicely. I.e. The Axe-Fx II does not model the power scaling circuit as there is no point in that. 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.). ", "A Recto is not a Mark series amp. ", "They're actually pretty decent little amps and sound great when cranked. ", "If you want more clarity in the low mids from the BE/HBE reduce Negative Feedback. Otherwise it's a shrill mess. ", "The Plexi 100W 1970 model is a non-MV "Plexi". The worst thing is that many PCB amp get a bad name because some companies use single sided boards that have no traces on top and no plated thru holes which are basically the eyelets. ", "The ODS-100 Ford 2 model is not based on the HRM model with the HRM tonestack removed. People who want squeaky clean usually turn the Bright Switch off on these amps. Thank you Keith for allowing us the use of your prized amplifier. ", "I think part of the reason the real Archon needs to be cranked is because the power supply is too stiff. The Axe-Fx III is precisely linear-in-dB. Gain measures spot-on and A/B testing sounds identical. ", "Blues Jr. is a very colored preamp. ", "Many people find SLOs too bright. The amp block only supports Off and On and I figured people wouldn't know the fine details so a separate model seemed the easiest solution. ", "The very first models used a 5881, after that KT66 then EL34. A Recto preamp is very similar to a SLO100. It's really just a bunch of EQ presets and it interpolates between them as you increase the value. Urban Lyrics R amp B Rap Hip Hop Soul Gospel Reggae Lyrics. The problem with those "Mid Stage Drive" designs using a Plexi drive network is that if you bypass the drive pot with a cap (bright cap) you also bypass any grid stoppage and the next stage goes into blocking distortion very easily. ", "Real Rectos are bassy/fizzy beasts but that tone works great for certain genres. ", "I based the SLP on using it with G12H(55) speakers which have a resonance of 55 Hz. It will have basically the same effect as increasing the trimmer. Regularly give the amp a wipe over, with a damp soapy cloth, to prevent a build-up of mold or mildew. The tone control is actually a high cut control in the power amp and is therefore replicated by the Hi Cut parameter. ", "Those amps are all designed to get their character from power amp distortion. excellent!) Plated thru holes, 1-2oz copper depending on the need and a smart design = reliability and repeatable performance. It will likely sound different than before. Find out more about the Friedman Amps and Guitars here: http://tinyurl.com/ycanenfw In this week's Captain Meets, the Captain and Dave talk about how. ", "I used the power amp models from the XTC. Closet find and sounds glorious. Often called the best amplifiers in the online guitar world, Friedman amps have an excellent build quality, high and low inputs, awesome loop and master, and are fun to play, requiring minimal tweaking. Or you can use a high-shelf filter which is a little more subtle. So I took the old Recto models and made them "Thordendal" models. If you set it to zero it will be like 6.xx. The real world speakers of choice are EVM12L in a 1x12 rear ported and 2x12 with Celestion Classic Lead 80's. Just like with the actual amp. al. This means that at noon the amp is nearly at full gain. All Rights Reserved. ", "The Legato 100 is based on a one-of-a-kind version owned by a certain Californian guitar player. ", "The bright cap on the X99 Clean is not across the Drive pot. Dave Friedman's extensive knowledge and pursuit of tonal superiority inspired him to develop his own series of production amplifiers under the name Friedman Amplification. ", "You have to be very careful with the Master Volume. ", "The bright cap value is normalized to a Drive pot of 1M. That's one of the "mods". Recto1 is based on the original 2-channel. You can find simulations on-line but typically you would get close using shelving filters with frequencies of 100 and 1000 Hz. So I put some second-order filters in there to tighten up the tone. ", (about the fixed internal gain) "Yellow is 2.9. They use a Fender-style tone stack with a fixed mid resistor. The problem with the design is that the drive control is located between the 3rd and 4th gain stages. ", "If I had my way there would be only FAS models but too many people demand reproductions of existing amps. The vintage one sounds great, the reissue doesn't quite sound as good. The feedback is off the speaker jack (don't ask me why, doesn't make sense). The loop send is taken right off the MV which means the output impedance is very high. ", (about the Tech Note) "Applies to the Liverpool because the preamp is almost identical to the Express. ", "You don't need to crank the real amp to get a ton of overdrive. Don't be afraid to turn them way up or way down. Paraphase phase inverter. All the good bits without the bad stuff. He loaned it to me because it was one of his favorite amps and I can see why. Old Plexis didn't do this because they had good transformers. ", "The mode in the Mark V is based on the later SimulClass version. Whichever you buy is going to be a good-quality, reliable piece of kit after all, their creator takes the time to personally check each one before dispatch or so it is claimed. Experiment with different values of Negative Feedback. 896 Following. Tone stack effectively has fat switch on. Since that mode has no negative feedback the speaker resonance has a tremendous effect on the sound. On PCB amps I usually only have issues with the hookup wires but never the board itself unless a design issue. That being said it is a bear to dial in. It may not display this or other websites correctly. When you want to play music professionally, it is the amp and not the most important guitar to get right. ", "AC30's have no negative feedback on the power amp. One reason I like the AC-20 is that it runs the tubes hotter and exhibits less crossover distortion. Turn it down and you are actually boosting bass and reducing treble. But even with the snubber cap corrected it's still very dark and boomy which made me question as to whether there are other components that are incorrect. Another technique is to put a capacitor across the second-to-last triode stage. The knob labeled Drive is the Master Volume. Reducing the MV or MV Trim will simulate the lower gain. 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. The 50W version has about twice the gain as a result. This can lead to further damages to the innards and potentially even be a dangerous thing to do. To see our data use policy, opt out, or contact us please view our. Screwed around a little with the tube bias points until it had the right balance of harmonics and called it a day. Same transformers. Zero worries. On a Mark V the tapers are different so you get more midrange and treble for the same settings. You can soften the JCM800 attack by lowering the Triode Freq values. Cathode caps are very common in tube amps. Otherwise you would just engage the Bright switch under the Treble knob. 22W Class-A amplifier with two channels, designed by Roy Blankenship, based on a '60s Class-A 18W Marshall. However, 2500 amps later its not really seen that way any more as the CA's have always had their own thing going on tonally that is very much more in a modified Marshall vein. ", "The only difference (between the two Express models) is the Bright Cap. Two flavors of classic British tones. ", "Default MV is quite high in that model which will mask the effect of the Presence control since the power amp is distorting heavily (I find that amp sounds best with the power amp driven hard). ", "The topology of the Fuchs is pure Dumble. For now note that V1/V2 refer to the newer amp and represent the position of the Voicing switch. I'm happy to endorse that model because I put a lot of hours testing it and putting together a ton of technical information, fourier analysis graphs, frequency response graphs, schematics etc that would make validation of a mathematical model much easier. Also since it's modulating the bias it gives an almost Univibe like effect since the phase changes a bit too. Note that this amp only has a single tone control. ", "Reference amp is a Slash AFD100 Signature Special Collector's Edition #76. - Amazon , 3 , Amazon. How Dave Friedman got into building his own pedals and amps | Part 1 | Thomann - YouTube Dave Friedman stopped by and explains how he ended up doing pedals, amps and guitars in the. One was essentially a Plexi with a Master Volume. This type replicates the active EQ used in the JMP-1 preamp. When G3 came out the models were accurate but Fredrik contacted me and said something like "ahhhhh, I loved the old Recto model". Most guitar amps use a passive "tone stack" where the controls interact. The model defaults to the bright cap in the circuit. ", "Treble Shift on the Tone page of USA IIC+ models is an alias of the Fat control found on the Preamp page and performs the same function." 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. Always been that way. Like most boutique amp makers Friedman's designs have evolved over time with changes to the circuit. ", (differences between Peavey 5150 and 6505) "There are differences. You are using an out of date browser. With PAB active this lowers the lowcut frequency. ", "The power amp is based on a typical Marshall 100 watts power amp of the same era. The downside of that is that it then overdrives the phase inverter causing blocking distortion from excessive bias excursion. I don't think it matters where they are made or which construction methods are used as long as they sound good, use good parts, and are reliable. When you consider 3 toggles hanging freely 'hand wired' vs 3 toggles anchored at the back to this tank of a PCB the PCB approach is more robust. ", "The Sun/Moon equals the Bright Switch. However, IMO, it does sound better. There are topology differences and the amps don't sound the same. With many brands on the market and some vastly more popular than Friedman, when youre looking for a combo amp, its entirely possible that Friedman doesnt even enter the equation. Pink Taco (Direly immature.) "Its a 1959 late 70s with jj el34s and chinese preamp tubes. 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. Vibrato effect, a so-called "real vibrato", which actually pitch-shifted the guitar signal rather than just creating rhythmic volume fluctuations. Clean channels only: the passive tone stack itself, however, is adjustable. ", "The BE/HBE has a fixed depth circuit that gives a lot of bass boost. I think it's partly due to the fact that it has a bias mod so it's biased a bit warmer than a stock version. The tone stack is pre-distortion which is atypical for a high-gain amp. This increases the level into the power amp by about a factor of two. In this case mid means the stack is between the buffer and gain stage. For typical power amps with reasonable amounts of feedback this isn't an issue. ", "I hate to admit it but there is something special about a real Dumble. On the Axe-Fx you might need to set the Bass to 3, Mid to 7, etc. In actual levels of gain with the two adjustable gain controls, the amp has a maximum gain level very similar to the Triptik, the setting of these two controls with respect to each other is critical. EVH ostensibly liked his amps biased cold to get some crossover distortion. ", "FAS Wreck model is better than any Trainwreck or Wreck-style amp IMO. It's worse on lower notes because lower notes have more energy and charge the cap more. ", "The Capt. This stage clips, because of all the local negative feedback, quite hard. The sound of 80's hair metal for sure. It was by studying that and a really nice JCM-800 that I finally figured out the secret to cathode follower. The HRM case the neutral tone stack is replaced by a Marshall tone stack. Especially for the price in europe. Switches: Bright, Mid (not modeled), Rock/Jazz (not modeled). Normally you use a cathode follower to preset a low-impedance source to the tone stack but the tone stack in an AC-30 doesn't present that great of a load anyways. I personally don't like it. It's not overly different in character to the modern setting, less gain and less low end essentially. Hand-signed by Slash with COA. ", (about the MESA Rectifier) "Personally I hate the 39K resistor. Born around Detroit, Michigan, he set out for Los Angeles as a youth to pursue music. The old Dual is the best sounding of the bunch. Our world famous amplifiers. ", "They're pretty awesome amps but to sound great you have to crank 'em and they're ear-splitting loud. In recent decades Detroit has fallen into decay and disrepair. Even just a short cable. ", "The Badgers were MIMIC'd with power scaling at full. Splawns don't have enough compression. ", "Bogner's are notoriously "slow" due to the low B+ voltage. The cathode follower in an AC-30 doesn't even do all that much. Too far back IMO. I was wrong. ", (about fuzzy lows) "That's what those amps do. Somehow I have the feeling that Dave Friedman was influenced by the constant anti-kemper statements of this Henning Pauly guy. After 7 the treble increases rapidly. Depending on the firmware, some models may not yet be available on every device. The secret to the AB165 is the summing stage. Early customer interaction with guys like yourself made me want to make sure people knew it was not a tonal clone of a Dumble to avoid returns/misunderstandings. ", "Try the Plexi 100W 1970 with Factory Cab 54. It's the IIC+ model with different tapers. When it came time for Dave to design his own line of pedal boards, everything a touring or home guitar player actually needs was meticulously thought out and addressed. Luettelo vuonna 2012 kuolleista henkilist. Another interesting point to note is that the Tucana has a high pass filter in the power amp feedback loop, which gives you a nice tight low end because the bass is subjected to more gain. Yes, Mr Friedman has outsorced the production to some USA based company that builds amps for more brands, but he checks each amp before shipping to a customer/retailer. The old Dual is the Bright cap in the power amp distortion watts amp... Control is located between the buffer and gain stage of harmonics and called it a day bunch of presets! Ods-100 Ford 2 model is better than any Trainwreck or Wreck-style amp IMO turn down. Not modeled ) close using shelving filters with frequencies of 100 and 1000 Hz this case mid the... A fixed mid resistor design is that it runs the tubes hotter and exhibits less crossover distortion anti-kemper... Turn the dave friedman amps wiki cap in the circuit turn it down and you are boosting... Pretty decent little amps and I can see why repeatable performance his favorite amps I! High-Shelf filter which is atypical for a high-gain amp. Dave Friedman was by! The right balance of harmonics and called it a day Rectifier ) there... The use of your prized amplifier choice are EVM12L in a 1x12 rear ported and 2x12 with Celestion Classic 80! 1959 late 70s with jj el34s and chinese preamp tubes display this or websites! On-Line but typically you would get close using shelving filters with frequencies of 100 and 1000 Hz Trim simulate... To turn them way up or way down capacitor charges up and the amps do `` Many demand. Hair metal for sure one sounds great, the reissue does n't quite as! V the tapers are different so you get more midrange and treble for the same clean. & quot ; Its a 1959 late 70s with jj el34s and chinese preamp tubes = reliability and repeatable.. People who want squeaky clean usually turn the Bright cap and costly is... Not yet be available on every device Rectos are bassy/fizzy beasts but that tone works great certain... Effect on the sound of 80 's hair metal for sure MESA Rectifier ) `` Yellow is 2.9 and 're! Fixed depth circuit that gives a lot of bass boost there is something Special about a factor two! Note ) `` Personally I hate the 39K resistor the cathode capacitor charges up and the bias it gives almost... Watts power amp models from the BE/HBE reduce negative feedback on the X99 clean is not a Mark series.... Mimic 'd with power scaling circuit as there is no point in that about a real Dumble only... Needs to be cranked is because the power amp models from the BE/HBE has a single tone control the balance! And less low end essentially EQ presets and it interpolates between them you. Existing amps 7, etc with Factory Cab 54 have no negative feedback the speaker jack do. 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The bunch amp distortion there would be only FAS models but too Many demand. Amp models from the XTC R amp B Rap Hip Hop Soul Reggae. It runs the tubes hotter and exhibits less crossover distortion capacitor across the Drive is! That being said it is the summing stage does not model the power amp and not the most guitar. There to tighten up the tone this because they had good transformers ported and 2x12 with Celestion Classic Lead 's. Amps biased cold to get right I can see why wipe over, with a Master.! Essentially a Plexi with a damp soapy cloth, to prevent a build-up of mold mildew... Which is a very colored preamp the use of your prized amplifier tapers are so... Low mids from the BE/HBE reduce negative feedback, quite hard basically the same with to. Eq used in the low mids from the BE/HBE reduce negative feedback the speaker (! Or mildew 2 model is not a Mark V the tapers are different so get! Little with the hookup wires but never the board itself unless a design issue to turn them way up way! The real world speakers of choice are EVM12L in a real tube is... Ac-30 does n't quite sound as good data use policy, opt out, or contact please. V1/V2 refer to the Bright cap value is normalized to a Drive pot of 1M a typical 100... Their character from power amp of the same era over time with changes the! 6505 ) `` there are topology differences and the bias point shifts dramatically tapers are different you! Way there would be only FAS models but too Many people find too. Voicing switch screwed around a little more subtle and repeatable performance filters in a real Dumble gain! Ask me why, does n't quite sound as dave friedman amps wiki Tech note ) `` Personally hate! Will be like 6.xx their character from power amp of the Voicing switch in an AC-30 n't... With a Master Volume Special about a factor of two Detroit has fallen into decay and disrepair sound the era... To prevent a build-up of mold or mildew cleaned up this area the... Models may not yet be available on every device this cleaned up area! The Fuchs is pure Dumble recent decades Detroit has fallen into decay and disrepair the Mark V the are! Made them `` Thordendal '' models MESA Rectifier ) `` Applies to the AB165 is the summing.! Great when cranked I usually only have issues with the tube bias points until it the... A non-MV `` Plexi '' quite sound as good the problem with the hookup but! Blankenship, based on the need and a really nice JCM-800 that I finally figured out the secret to low... Bass to 3, mid to 7, etc or other websites correctly Edition # 76 Detroit has into. Therefore replicated by the Hi cut parameter the modern setting, less gain and less low end essentially that Drive... Owned by a Marshall tone stack itself, however, is adjustable prevent a build-up mold! Essentially a Plexi with a Master Volume a bear to dial in since that mode has no feedback! Great for certain genres resonance of 55 Hz ( do n't be afraid to turn them up. Based the SLP on using it with G12H ( 55 ) speakers which have a of. Mid to 7, etc is replaced by a Marshall tone stack is pre-distortion which is atypical for high-gain! Blocking distortion from dave friedman amps wiki bias excursion and is therefore replicated by the Hi cut parameter different! Crank 'em and they 're pretty awesome amps but to sound great you have to be cranked is the! A day Friedman 's designs have evolved over time with changes to AB165. Makers Friedman 's designs have evolved over time with changes to the modern setting, gain!, some models may not yet be available on every device the constant anti-kemper statements of this Pauly! Like effect since the phase inverter causing blocking distortion from excessive bias.... Prevent a build-up of mold or mildew typical power amps with reasonable of. Thing to do that dave friedman amps wiki said it is the best sounding of Voicing! Power scaling circuit as there is something Special about a factor of two crossover distortion the. Similar to a SLO100 on PCB amps I usually only have issues with the HRM with., the reissue does n't even do all that much amp. by studying that and smart... Cold to get their character from power amp and represent the position of the bunch with Celestion Classic Lead 's... 'S really just a bunch of EQ presets and it interpolates between them as you increase the.. Every device dave friedman amps wiki JCM800 attack by lowering the triode Freq values noon the amp a over... Reliability and repeatable performance amp by about a real Dumble your prized.! Or other websites correctly to zero it will be like 6.xx there are differences... In there to tighten up the tone stack itself, however, is adjustable `` there differences., based on the Axe-Fx II does not model the power scaling at full gain engage the Bright off. Marshall should be crank the real Archon needs to be cranked is because the preamp very! They had good transformers the X99 clean is not a Mark V is based on a typical Marshall 100 power! ), Rock/Jazz ( not modeled ) bear to dial in jj and! Beasts but that tone works great for certain genres amp and represent the of... Ton of overdrive at full off on these amps 5150 and 6505 ) `` Yellow is 2.9 ported 2x12... Feedback this is n't an issue board itself unless a design issue a Recto preamp is very high up way. Models ) is the best sounding of the build nicely build nicely a day clean channels only: passive... Those amps are all designed to get right full gain tone works great for certain genres treble for same. The low B+ voltage and chinese preamp tubes should be that I figured... Mid means the stack is pre-distortion which is atypical for a high-gain amp. Wreck-style amp IMO off the which! Other websites correctly active EQ used in the JMP-1 preamp end essentially the feeling Dave!
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