The above amplifier was purchased from the original hiwatt amplification company circa 1985, was originally custom built produced for pete townshend the who circa 19711972. Free downloadable tone stack calculator mac mac programs like tone generator for mac, preflopper poker calculator mac os x, fractal time calculator. The hiwatt comes off of the 220k plate resistor, the marshall feed comes off of the 100k cathode resistor. The common filenames for the programs installer are calc.
For example, how does changing the treble setting impact the bass frequencies and vice versa. I have never played a current production hiwatt, but when faced with the same decision that you find yourself in now, i went with a vintage hiwatt 1975 dr 103. He attended technical school in the late 1950s, and did apprenticeships at marconi electronics and mullard. The valve saturation stays clean with all of those lovely harmonics. Jun 08, 2010 the tone stack frequency is the frequency of the mid control in active mode. Oh i have a work around for that problem if you or anyone is interested. Hiwatt custom 20 watt ministack amplifier musicians friend. In this post, well implement a simple stack based calculator also known as reverse polish style.
Starting in the late 1960s, together with marshall and vox, hiwatt contributed to the sonic image popularly termed british sound. When marshall copied the fender 5f6a bassman almost verbatim to create the jtm45 amplifier the fender tmb tone stack came with it and its still being designed into new amps today. As promised for andrew k and anyone else that is interested this is a tone stack comparison between the standard fender, dumble and hiwatt. Heres a good example of the rich hiwatt tone he got in 82. That being said i do have a desire to break out into the real world and get an amp. The tone stack calculator is designed to help you check out the design and response curves of a variety of tone stacks used in popular guitar amplifiers. Controls include gain, fine, 3band eq, and a cleanclean gain switch. With all the modeling going on these days i thought it might be of value to show the transfer curves of the tone stacks in fender, marshall and vox ac30tb tube amps. First, well assume that the driving circuit has an output impedance of zero. Hiwatt is more percussive and faster with less sustain. Entwistle used several 100w hiwatt cr103 amps and one of his frankenstein precision basses for that show and his tone is heavy on the mids.
This thing on the other hand delivers such a punch that it will blow the marshall stack out of his feet, while still delivering consistent balanced tone. Used hiwatt custom hiwatt 20hd guitar stack guitar center. Nov 07, 2016 the hiwatt is a plate fed tone stack with a cathode bypass cap. My tube amp is a black heart little giant with a 12ax7 and an el84 and it has a marshall tone stack as shown below. Passive klangregelnetzwerke kann man mit dem tone stack calculator. Ive owned and restored five hiwatt amps with great success. In passive mode the tone stack is frequency scaled by the ratio of the entered value to the default value. The fendermarshallvox tmb treble mid bass tone stack has been around since the 1950s and has become a staple with fender and marshall amps.
Setting system time signature and bpm touch the metronome icon on the upper menu to access settings for the time signature, and to manually set the bpm. To keep the mathematics from becoming overwhelming, well make a few assumptions. The above amplifier has a unique tone circuit which was specifically designed by david reeves hiwatt for pete townshend of the who circa 197172. Here is the classic james tone stack as used, for example, in the 120watt orange graphic. While working his day job, young reeves also started working evenings in a small room over plato music on crown passage in morden from 19641968. Hiwatt is a british company who manufactures amplifiers for electric guitars and electric basses. It does not account for coupling capacitor bass attenuation. Because this type of tone stack really loads down the guitar signal being able to eliminate the tone stack is a valuable option. My 57 reissue strat currently serves me by use of a guitarpo. To use tonestack with a physical midi clock, or a midi clock from another app, put the use internal clock switch on the midi settings menu in the off position.
Old ampegs have baxandall tone circuits they have a mid knob, but its seperate from the bass and treble controls, like the fac and the hf drive are seperate from the bass and treble in the orange. On this page i use the 5f6a bassmans tone stack but all the stacks component values can vary in other amps. Tone stack calculator grapher for mac the gear page. Hiwatt cp103 and dr103w pete townshends guitar gear whotabs. To see how component values affect the tone stacks output you can use the duncan amps tone stack calculator program discussed below.
I recommend the deluxe edition of that album since it has the whole performance. Tonestack offers you an enormous range of amps, cabs and effects. The treble knob is less of a gain on a fixed frequency than shift between an upper mid and a treble boost. If you throw el34s in an old ampeg, you get a very similar tone to an old orange. The tone stack frequency is the frequency of the mid control in active mode. Simply click on the appropriate tab to bring up a different schematic. Love aint for keepin the who toronto 121782 youtube. Built by hand in england, every custom shop amplifier is soaktested before it leaves the factory to serve a new generation of musicians. Hiwatt custom 20hd mini stack is well, a mini about 43 inches highversion of the hiwatt stacks head and 2 cabs two channels, clean and distorted works off footswitch or button on front. If we would crank both amps at full tilt, hiwatt would bark, and marshall would scream out of fear. Hiwatt dr103 all purpose 100w heads with mullard 4xel34 power tubes and 4xecc83 preamp tubes.
Differences between a hiwatt and a marshall discussion in amp input normal. There is greater overall attenuation and a slight shift upward in the frequency at which gain is minimum, but the response is not dramatically different. But i was hearing different results then what was shown in the tsc. I was using the marshall circuit in the tsc, and my amp is a marshall. Here is the tone stack from the hiwatt cp103, better known as the amp. In, headphone jack, and speakers out 28ohm my cabs contain 10 hiwatt speakers. Differences between a hiwatt and a marshall fender. Tone stack calculator free download windows version. Its a program written in c that is supposed to take the operations of a stack calculator and store the operands of a mathematical expression. For a lowimpedance driver like a cathode follower, this is a highlyaccurate assumption. Tube amp tone control stacks and settings aperio guitar.
Just listen to some live stuff by jethro tull from about 19701972 just as sweet and thick as any marshall tone from around the same time. It had two inputs like the marshall master volume heads of the same vintage, and it had a little more preamp gain than a marshall. If your browser opensruns program files, the installation will be automatic. Tone stack bypass or raw switch this is a great mod for pretty much any amp with a tmb treble mid bass tone stack. There are a couple of things you need to know about the hiwatt design that make things seem a little backwards if youre used to other british amp heads. Hi james, youre right, i dont discuss nearly enough british gear in my column. The mid controls more of the overall contour of the entire tone stack. The bass knob is more of a fixedfreqency gain control. Look at splawn, splawn uses plate load tone stacks but have an extra gain stageor two up front and also a. Outofthebox, tonestack comes with 6 amps, 6 cabs and 21 effects. As there have been a few comments about the fabled dumble amps i thought id share my findings with you. Aug 08, 2014 it needs to be noted that hiwatt was not one of these companies.
It is intended to be of interest to amplifier technicians, amp modifiers, hobbyists and students. Fender modern, vox, marshall, james passive predecessor to baxandall, fender e series, steve bench, hiwatt tone stack, and now the big muff tone stack used in fx units. Aug 17, 2010 the marshall clean tone comes across as very weak and distorted when compared sidebyside with the hiwatt s obvious clean prowess. If youve ever heard foreigners hot blooded, that is what that hiwatt sounded like. Hylight electronics was the brainchild of british audio engineer david reeves. In the mid 70s, i had the opportunity to take some private lessons with bill connors return to forevers first, and best, electric guitarist when he lived in the san francisco bay area. David would also scale down his rig for tvappearances in 1970a71 using only one hiwatt head and a wem cabinet. In fact, what may appear at first as a simple variation and copy on the marshall superlead in what was the form of the hiwatt custom 100 dr103 head, further examination quickly reveals that the design itself was actually far from it. When an operation is performed, the last two values on the stack are removed and used as the operands, then the result of the operation is placed on the stack. The mid knob, in addition to its other duties, controls how loudly the entire signal leaves the tone. To simplify the mathematics, well make two important assumptions.
People with a working concept of the tone stack sometimes talk about the mid control as a way to fill in the big valley missing from midrange frequency response created by the way the two other tone controls work. Tone stack calculator grapher for mac discussion in ampscabs tech corner. On this page i use the 5f6a bassmans tone stack but all the stack s component values can vary in other amps. The vst plugin described on this page emulates a typical marshall tonestack. Trusted windows pc download tone stack calculator 1. This is in part by design, as i live in a small apartment and a large amp would not win me points amongst the neighbors. Hiwatt dr103 all purpose 100w heads with mullard 4xel34 power.
Download the latest version of tone stack calculator free. I was experimenting in my amp circuit trying some cap values i had worked out in the tone stack calculator. After youve downloaded crossover check out our youtube tutorial video to the left, or visit the crossover chrome os walkthrough for specific steps. Skip to main content skip to footer site5111780038 used 111780038 hiwatt custom hiwatt 20hd guitar stack. The implementation is almost entirely done with functions, with only one special type and no pattern matching at all, so it is a great testing ground for the concepts introduced in this series. Can someone explain fender tone stack interaction to. After that, all you have to do is select the tonestack parameter you want to map to and then manipulate an element on your midi controller that you intend to use. To see how component values affect the tone stack s output you can use the duncan amps tone stack calculator program discussed below. Here is what i just thought of could be causing this. Can someone explain fender tone stack interaction to newbie. Build 25 released, added support for large fonts and to allow resizing of the window. You can access this feature by going to app settings midi and turning on the midi learn units switch. I was able to find a vintage hiwatt for less than a current production hiwatt new or. Like nysbob said, the whos live at leeds album 1970 is a good showcase of hiwatt tones, for both bass and guitar.
Playing a hiwatt at a loud volume is well an experience. The stack is also found in sound city amplifiers like the sc105. I remember trying out a late 1970s hiwatt half stack in a music store many years ago. The calculator plots gain versus frequency based on the characteristics of the tube, resistor values, and the capacitor value. Here is the tone stack from the hiwatt cp103, better known as the amp created for the who. These are placed right in the treble tone stack for a hiwatt. May 15, 2019 download tone stack calculator free duncan amps. Kit that builds on dave cigna and duncan munros work in duncans tonestack calculator. The fanes are part of the equation and sound very deep and warm and work great with the spikey tone. Look at splawn, splawn uses plate load tone stacks but have an extra gain stageor two up front and also a ton of treble snubber caps. Below, it is explained, how the tonestack was discretized. When i played through one for the first time a dr103 made in 1972, all of a sudden, my marshalls felt very thin in tone in comparison.
The tone stack calculator is designed to help you check out the design and. Amp similar to hiwatt on the cheap music player network. Patricks day sale take 15% off thousands of listings for a limited time. Hiwatt has proudly crafted truly handmade amplifiers and cabinets, serving the worlds best players since 1966. The t20 looks every inch a proper hiwatt and seems to be well built especially for the asking price. The gotchca for those that tinker is the 500k bass pot on hiwatt tone has to be true log not the fake ones. The duncan tone stack calculator does what you want to but you have to run in a windows enviroment, sorry mixn4him, aug 1, 2014. Hiwatts 4x12 cabinets also play an important part in the their overall tonesomething i first discovered with a marshall major, ironically enough.
This amp has the james style tone, which youll see can come very close to the fender curve. With fendertype stacks the bass and treble knobs mostly just. But if someone says you cant get singing lead tones out of a hiwatt, then, thats a lie. Tone stack calculator is a 32 bit application, and has not been tested to run under windows 3. Use the document level analysis to get a sense of the overall tone of the document, and use the sentence level analysis to identify specific areas of your content where tones are the strongest. The tone stack calculator is designed to help you check out the design. The tone stack explained in english for humans pick roar. Tone stack calculator download shows the response curves and. To start out, you teach tonestack midi by a feature called midi learn.
Hiwatt tone stack, and now the big muff tone stack used in fx units. Values can be altered simply by doubleclicking on the component. This technique is often used for the preamps bright channel. The hiwatt dr103 custom 100 featured an 11tube chassis pushing 100 watts through two separate channels that used either two or four inputs.
I am by no means a hiwatt expert but just scored a vintage dr103 from around 1974 with all original mullard valves, and by god it is nice. The resulting algorithm was then used to implement a vst plugin, which can be downloaded for free at the end of this page. The unauthorized use, reproduction, or passing on of individual content items. Ive got both hiwatt and marshall amps, and they are certainly apples and oranges.
Just add an spst onoff miniswitch to the mid pots or 6. A baxandall, like many old hifi amps, which can give you a scooped tone if you turn up both controls quite a. Add to all this the many powerful guitar effects that tonestack brings to ios for the first time. The result is a warm, responsive tone with the natural behavior you find in analog units.
Your mod changed the way the tone stack reacts, there are many mod you can try there, and listen to the result. The hiwatt is a plate fed tone stack with a cathode bypass cap. This powerful little package has a pair of 10 speakers driven by a bold 20 watts. The next plot below assumes the tone stack is driven by a 12ax7 voltage amplifier with an output impedance of 39k and a followon grid resistor representing an input impedance of 1m. Its also equipped with an effects loop, footswitch input, and headphone jack. Download tone stack calculator calculate the response curves of guitar amplifiers with multiple. Rare hiwatt mica 220pf cap for tone stack you are viewing a auction for one old tested lemco mica 220pf as used in vintage hiwatt dr 50 watt or 100 watt amplifiers. Commonly found in hifi designs usually centred around a midrange frequency of 1khz, while most guitar amp tone circuits are centred around a midrange frequency from 300hz to 500hz. The tone analyzer service analyzes text at the document level and the sentence level.
Among new amps, reeves and mywatt seem to be the best options. Hi all, ive created a crossplatform mobile app called tonestack kit that builds on dave. The horizontal axis is a log scale of frequency from 10hz to 10khz and the vertical scale is from 15db to 0db. Yes your observation about hiwatt tone is no illusion, i use the mid at close to zero a lot in my rig. Hiwatt was always the amp a band could rely on back in the 1970s and it would have been a tragedy if, in an attempt to get the price down, the company had let its standards slip. The fendermarshallvox tmb treble mid bass tone stack has been around. Anything above 5s on the treble and bass are going to yield a midcut. Hiwatt cp103 and dr103w pete townshends guitar gear. The hiwatt dr103 is notably louder and can also run much cleaner than100 watt marshalls when needed and they also have tremendous headroom available.
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