Mxr phase 90 script logo schematic software

The mxr phase 90 modulation is controlled by one knob which set the speed of the effect frequency of the lfo. Includes all the parts and materials you need to build a phase 90 script logo version, including the pcb. Mxr csp026 handwired 1974 vintage phase 90 pedal features. Ronsound yesterdays technology today, the art of e.

Its a great time to upgrade your home music studio gear with the largest selection at. The first period is known as the script period, in reference to. The circuit is composed by four phase shifting stages, and delivers the. Like other pedals of the time, mxr pedals prior to 1981 did not have leds, ac adaptor jacks, or truebypass switching.

Blog history historia evolution evolucion mxr phase 90 effect pedal. The phase 90 was the first pedal sold by mxr and helped launch the company in 1974. If anyone is interested in the evh phase 90 pedal please read this. Mxr phase 90 modifications by douglas kovach march 28th 2015 how it all began. First up is the script logo phase 90 which gets its name from the elaborate script font used on the casing. Honoring van halens history with the phase 90, mxr gave eddie a signature version of the effect.

Not sure why anyone would waste time trying to draw a schematic. Anyone interested in drawing a schematic of the new model of phase 90. The first mxr effects pedal was the m101 mxr phase 90 phaser. If you wish to buy a mxr phase 90, take a look and listen to the script logo and the vintage reissue pedals dont overlook the phase 45. I dont know how but i stumbled across this thing call the script mod. We chose to use this layout since the 741 ics seem to be part of the magic sound of the old script logo version. The pcb parts placement diagram was dated late 1977 so i assume this is the 1978 version if anyone can confirm.

P90 readyfortransfer printed circuit board layout for use only if you are a complete diy person who wants to etch and drill your own pcb. The mxr phase 45, a milder version of the phase 90, followed, as well as a programmable version, the phase 100. Includes a matched set of jfet transistors selected for the best sound possible. The differences between both models are small and in this way, the block logo. When mxr went to the block logo, the circuits were the. The mxr m101 phase 90 pedal gives you classic phasing with variable speed control. As simple as it gets the burntorange phase 45 with its mxr script logo is the very picture of stompbox elegance. Phase 90 circuit board revisions the pedal custom shop. The vintage script logo models had a much warmer and more organic tone than the later block logo versions. The mxr phase 90 classic phase tone comes from the addition of added distortion to the guitar signal. Evh phase 90 same as the early custom shop script model again, some boards are red mask rather than green. First let me state for the record that though i have often heard of and read about the mxr phase 90, the brand name was not on my list of coveted vintage pedals to own.

The phase 90 was instrumental in creating the guitar tones on the early van halen records. This is the holy grail of phase 90s and has been in such high demand that mxr reissued the pedal made using the same circuit board as the original one seen below. It is a warm, thick phase that sounds great with distorted guitar tones and that is really the strength of this unit. The pedal can also be switched to deliver an edgier phase tone. The older script logo pedals are fantastic with no mods. I bought a new mxr phase 90 pedal from the music store i work at. The mxr phase 90 has a magical swirling sound that adds a subtle depth to your tone. Follow the bill of materials, the layout diagram and general build instructions.

Mxr m101 phase 90 dunlop reissue mxr custom shop csp001 variphase pedal phase 90 in wah housing mxr custom shop csp026 handwired 1974 vintage phase 90 dunlop reissue mxr custom shop csp099 phase 99 dual phase 90 mxr custom shop csp101s script phase 90 dunlop reissue. The mxr evh eddie van halen phase 90 captures the warm, hypnotic tone of the script logo phase 90 that figured so prominently on the early van halen records. Instantly toggle between a vintage, script logo phase tone and a more modern block logo phaser. Mxr went bust in 1984, but dunlop picked up production in the late80s, relaunching the block logo phase 90 for a new generation. It has a single knobspeedthat adjusts the rate of phase. See how the jacks and led wouldnt line up with the other boxes. And true to the original, the 45 is strictly battery powered, so. True to the classic mxr phase 90 design, this custom shop script phase 90 lets you define a wide range of classic phasing effects with the twist of just a single knob.

Although this study covers the script logo circuit, the components are labeled following the block logo model. The mxr evh phase 90 shifter is a limitededition version of the legendary mxr phase 90. The first phase 90s came with the coveted script logo, but mxr swapped it for the block logo in 77. This mod is part of the stinkfoot stage 1 phase 90 mod, by the way. Vary the speed from a subtle, long cycle to a fast, watery warble with endless vintage vibrations in between. Single 9 volt battery or dunlop ecb003 ac adapter not included get your mxr evh phase 90 today at the guaranteed lowest price from sam ash direct with our 45day return and 60day price protection policy.

M101 phase 90 clean, then stock pedal m101 phase 90. But the evh 90 also features the allnew script switch that lets you instantly toggle between a vintage, script logo phase tone and a more modern, inyourface block logo phaser. Handwired circuit board built 1974 spec components switchcraft inputoutput jacks carling bypass switch hard bypass, true bypass is an option handselected transistors matched to produce warm, deep phasing original script logo orange finish. Add shimmer to lead passages or jetplane resonance to muted strumming. If you want lush, warm and sweet phase tone that all of yesteryears greats used, this is your pedal. History of the mxr phase 90 effect pedal puzzlesounds. Ronsound custom effects mods sams photofacts ronsound swag pcbs gift certificates ecommerce, open. Original circuit design for smooth and lush 4stage phasing. The original model had a simple orange enclosure with a script style mxr logo. The only thing i have done to them is to add a depth knob, cause some guys want the ability to control this.

Handwired circuit board built 1974 spec components switchcraft inputoutput jacks carling bypass switch hard bypass, true bypass is an option handselected transistors matched to produce warm, deep phasing original script logo. It is the first selfcontained unit which offers programmable phase shifting through independently adjustable speed and intensity controlsk the fourposition intensity control allows for adjustment of sweep width, and also provides regeneration of the processed signal. This is a mxr tm phase 90 tm script version phase shifter replica known here as the p90. Cutting the feedback resistor out makes the effect more mellow, making the pedal sound a little more like the original script logo pedals from the 70s. Sadly the one i wanted, script reissue with led and dc power jack, was pretty expensive.

The 4stage jfet module is based on the mxr phase 90 and features nos 2n5952 jfets and 4 separate single opamps. Ive decided to use the lfo high cut to not have to twiddle with the depth knob when changing the rate. The most noticeable difference between this model and the future iterations. I managed to find my old mxr 90 with block letters and no led. Script logo, circuit, bass, electric, guitar, layout, logos, building. The part of the circuit where the actual phase shifting occurs is on its own separate module board, meaning you can change out the module to create completely different styles of phasing. I do have rack effects so maybe i could use that for one and the phase 90 for the other type tones. Looking at tonepads schematic, shouldnt sw1 of the script mod go to pin 6. Plus, the evh 90 sports the greatest graphics in the history of rock. Mxr effects effects schematics footswitches repairs rons stuff sale amp schematics synth schematics coming soon. And it comes dressed in the original smooth orange paint job and script logo with an led and ac power jack, direct from the mxr custom shop.

I also found a schematic for a phase 90 with a led. The mxr custom shop script phase 90 brings back the headroom and clarity of the original, along with its ultra warm and smooth phasing and reduced midrange swell. With this beautiful reissue of the 45, mxr may coax this sweetsounding pedal into the limelight yet. And it comes dressed in the original smooth orange paint job and script logo with an led, direct from the mxr custom shop. The phase 90 had only very minor changes over the years, and the dyna comp didnt change significantly at all. Page 2 9volt and run another cable from the swoosh to chords nominal intput level 20 dbv ac adapter such as the dunlop phase 90 s output jack to nominal output level 20 dbv works well with bass, keyboards ecb003ecb003eu or a dc brick.

The evh 90 captures the warm, hypnotic tone of the vintage. Mxr phase 90 script mod r28 c11 c12 wrong power adapter diode fix distortion get a small screwdriver and turn the white potentiometer inside until the phaser sound comes back. Summary of contents for dunlop mxr m101 phase 90 page 1 m101 phase 90 92503016096 revb. The circuit is designed around a phase shifting stage with an input buffer to avoid tone sucking. Regular block logo phase 90 m101 some boards are red instead of green mask, but the same layout. Is a 74 script logo mxr phase 90 considered a low drainage. Complete with the red, white and black striped look of his frankenstein guitar, this version features contemporary appointments such as an led indicator and 9volt power supply option, as well as a script button, which enables the user to change between the sound of the vintage script logo. So this version with the ic chip has a script mxr on the bottom lid but a block mxr logo on front. The layout is very similar to the original mxr layout. Add an mxr custom shop script phase 90 to your pedalboard and instantly transport your tone back to the early.

There was a transitional period in which some phase 90s with script logos had box logo circuits, and vice versa. Mxr evh flanger cloned with the unchained button engaged, which is just a preset set of settings. Im sure everyone has an official mxr vintage script phase 90 schematic. Whether youre using it to get van halens tone in a box, or building out your own sound, the phase 90 is one of the most popular phasers on the market for a reason. If you are building this to fit in a 1590b size enclosure, do not use ic sockets. At about 9 oclock, the script phase 90 dishes out a smooth and mellow modulation that adds a nice and subtle accent to your sound an excellent effect for rhythm playing. The ics will have to be soldered directly onto the pcb due to space limitations. Ive had an original 74 bud box scripty, an original block logo, various. Like many other pedals of the day, mxr pedals prior to 1981 did not have leds, ac adaptor jacks, or.

Officially called the mxr custom shop csp026 handwired 1974 vintage phase 90 pedal. The phase 90 was used on the first two van halen albums. Officially called the mxr custom shop csp026 handwired 1974 vintage phase 90 pedal the fuzz pedal is an analogman sunface bc109. Turns out all i had to do was put a pedal with a buffer boss in front of it and the problem went away.