2020-12-05T17:26:01Z

Rasteri:

2020-06-02T13:05:07Z

Rasteri:

=SC1000 New Firmware version 1.3 - check video below for details!=

For the SC1000 hardware/firmware/software repository, go to [https://github.com/rasteri/SC1000 https://github.com/rasteri/SC1000]

Welcome to the scratch technology wiki

A (perhaps ill-advised) attempt to get the burgeoning scratch mod community to pool information and resources in a common place.

Please feel free to add as much information as you can - even if you can't be bothered formatting it properly. I'm more concerned with quantity than quality at this point :)

== Pages that exist so far ==
* '''[[Community projects]]''' - A list of turntablist-oriented electronics projects
* '''[[Crossfader circuit]]''' - a guide to crossfader audio circuitry
* '''[[Faders]]''' - summary of fader technologies, from a mechanical and electronic standpoint
* '''[[Nanofader]]''' - description of a very simple and cheap scratch mixer circuit
* '''[[Numark PT-01]]''' - reverse engineering of the popular Numark portable turntable
* '''[[Technics Mods]]''' - Modifications that can be done to the Technics SL-1200 and 1210
* '''[[Mixer Mods]]''' - Modifications that can be done to mixers such as the Vestax PMCPro series and the Stanton SA series
* '''[[PMC Pro]]''' - A still incomplete guide to the Vestax PMC Pro range of mixers, going into far too much technical detail

Main Page

2020-06-02T13:03:00Z

Rasteri:

Main Page

2020-06-02T13:02:49Z

Rasteri:

=SC1000=
==New Firmware version 1.3 - check video below for details!==

For the SC1000 hardware/firmware/software repository, go to [https://github.com/rasteri/SC1000 https://github.com/rasteri/SC1000]

Welcome to the scratch technology wiki

A (perhaps ill-advised) attempt to get the burgeoning scratch mod community to pool information and resources in a common place.

Please feel free to add as much information as you can - even if you can't be bothered formatting it properly. I'm more concerned with quantity than quality at this point :)

== Pages that exist so far ==
* '''[[Community projects]]''' - A list of turntablist-oriented electronics projects
* '''[[Crossfader circuit]]''' - a guide to crossfader audio circuitry
* '''[[Faders]]''' - summary of fader technologies, from a mechanical and electronic standpoint
* '''[[Nanofader]]''' - description of a very simple and cheap scratch mixer circuit
* '''[[Numark PT-01]]''' - reverse engineering of the popular Numark portable turntable
* '''[[Technics Mods]]''' - Modifications that can be done to the Technics SL-1200 and 1210
* '''[[Mixer Mods]]''' - Modifications that can be done to mixers such as the Vestax PMCPro series and the Stanton SA series
* '''[[PMC Pro]]''' - A still incomplete guide to the Vestax PMC Pro range of mixers, going into far too much technical detail

Faders

2020-05-26T10:02:47Z

Rasteri: /* Contactless */

The crossfader is the component of the DJ mixer that is most important to turntablists.

== Intro ==
Early DJ crossfaders were a simple carbon-track design, and contained two pairs of Logarithmic curves. This made the crossfader essentially equivalent to two back-to-back input faders. These were adequate for looping and beat-juggling, but made performing even basic scratches very difficult. In addition, the faders simply weren't designed to withstand the number of cycles a typical turntablist would put them through in a day, let alone a few years. As a result, many/most early scratch DJs used the phono/line selector switch to cut instead.

By the early 90s, performance mixers (such as the mx-2200) had faders with sharper curves, and used a carbon/plastic hybrid design to increase the durability. Still later mixers, such as the Vestax PMC Pro series, switched the passive fader design for VCA circuits. These allowed advanced features like control voltage filtering (increasing fader life even further) and curve adjustment.

The current generation of performance mixers have a wide variety of novel non-contact methods of sensing fader position.

==Fader requirements==
Turntablists have the following requirements in a crossfader :

* '''Low friction''' - the wiper should move with as little friction as possible.
* '''High durability''' - the fader should be able to withstand significant lateral and forward-backward force at all wiper positions.
* '''Long operational lifecycle''' - the faders lifecycle should be specified in the millions of operations, ideally tens of millions.
* '''Small dead zones''' - faders often have dead zones or "lag" at each end of the wiper travel, where the movement of the wiper has no effect. Large dead zones affect the ability of the mixer circuit to reduce the cut-in distance.

Other factors to consider include :

* '''Wiper weight''' - The inertia of a fader depends on its mass. For example, the Focus Fader is extremely light and thus has very little inertia, whereas the large metal stem base used in Vestax PCV faders gives them a much larger inertia.
* '''Rebound damping''' - different faders have different means of damping the wiper when it hits the interior wall of the enclosure. This affects both the amount of mechanical noise generated by the fader, as well as the efficacy of some scratch techniques that might involve bouncing the fader against the damping material. The ALPS faders used in early Vestax PMC Pro mixers have no damping whatsoever, whereas Pioneer's Magvel fader used in its most recent performance mixers have a full range of interchangeable rubber stoppers with different rebound characteristics.

==Design approaches==

===Mechanical characteristics===

Generally speaking there are two types of fader mechanical designs :

====Spring suspension====
Wipers in spring suspension faders are suspended between two metal springs - an upper spring that pushes upwards against the top of the metal enclosure, and the lower metal brush that actually makes electrical contact with the fader's carbon tracks.

These faders are cheap as they contain very few parts, and can be made very small. However, they are not very durable due to there being no strong wiper support structure and generally have a short lifespan due to the brush contacts being an integral part of the support mechanism. In addition, they are usually lubricated with a fairly viscous lubricant so are not ideal for turntablists.

Most DJ faders are of this type, including (until recently) those found in premium mixers such as the Pioneer DJM series and inexpensive passive designs such as the [[Raiden]] and [[Frisk]] faders. They are not however generally found in performance mixers for the above reason.

====Railed====
The wiper slides along one or more polished steel rails, which allows for greatly improved durability and lifespan as the mechanical support is separated from the electrical mechanism. This also allows for position sensing methods other than the traditional metal brush/carbon track combination.

Most of the faders found in performance mixers are of this type, but can be separated into two categories :

* '''Short bodied''' - these have the rails placed horizontally side-by-side. This allows the fader enclosure to be of a similar size to spring suspension designs, but some designs do not have great angular stability in the wiper as the rails are not very far apart. Performance-oriented faders in this format include :
**'''Audioinnovate [[Mini Innofader]]'''
**'''Rane [[Rane Magnetic Fader|Magnetic Fader]]'''
**'''Behringer/Rodec [[Infinium]]'''
**Various hobbyist '''[[Mini Focus Fader|miniature variations of the Focus Fader]]'''.

* '''Long bodied''' - these have the rails places vertically, one above the other. This design keeps the wiper very stable, but require a lot more space inside the mixer to accommodate the taller fader enclosure. Performance-oriented faders in this format include :
**'''Vestax [[PCV]]''' and its '''[[CF-CC]]''' variant
**'''Eclectic Breaks [[Pro X Fade]]'''
**'''Audioinnovate [[Innofader]]'''

The [[Focus Fader|Stanton CFF1 (aka Focus Fader)]] and [[Ecler Eternal]] are both combinations of long-bodied and short-bodied designs, in that the rails are side-by-side like a short bodied fader, but the enclosures themselves are long-bodied to fit in the sensors.

===Electronic characteristics===

Fader electronics can be again divided into two groups, carbon-track-based and contactless.

====Carbon track====
Most faders are based on the principle of metal brushes, usually brass or stainless-steel, contacting a PCB covered in a carbon track. The carbon track increases in resistance along its length, and this change in resistance can be used to control an audio circuit.

Early mixer designs actually made the fader a part of the audio signal path, allowing the change in resistance of the wiper to adjust the relative volume level of the output. Later mixers used the fader to generate a control voltage for a [[wikipedia:Voltage Controlled Amplifier|Voltage Controlled Amplifier]], allowing techniques such as filtering and curve adjustment. A more in-depth discussion of the crossfader support circuitry can be found in the [[crossfader circuit]] page.

Disadvantages to the carbon-track design include :

* '''Increased friction''' - since the metal brush has to be in contact with the carbon track, naturally this means there will be some friction. This can be moderated by reducing the force of the brushes and lubricating the carbon track.
* '''Limited lifespan''' - every time the wiper is moved, a few atoms of the carbon track are scraped off, and as such the lifespan of the fader is limited. Exactly how limited this is depends on the formulation of the carbon track and the maintenance level of the fader.
* '''Susceptibility to contamination''' - The brushes and tracks can gather dust and dirt, which reduces the quality of the contact and can introduce unwanted noise.

====Contactless====

As an alternative there are a number of contactless faders in the market, each based on one of these technologies :

*'''Photointerruptor''' - Invented by [[DJ Focus]], these were the first contactless performance faders to be created, and relied on the principle of the wiper interrupting a beam of infrared light at each end of the wiper travel. Faders based on this technology include :
**'''[[Focus Fader|Stanton CFF1]]''', based on Focus' earlier homebrew prototype.
**'''[[Focus Fader|Stanton CFF2]]''', which expanded the principle to include photointerruptors along the entire length of the wiper travel for full analogue position sensing.

*'''Photo Reflector''' - designs based on reflecting light off the wiper. Designs of this sort include:
** '''American Audio [[QD5 MK2]]''' optical fader

** '''Behringer/Rodec [[Infinium]]''' which is a very advanced design incorporating multiple angled sensors and a reflector printed with a [[wikipedia:Gray code|Gray code]] pattern.
**Various hobbyist '''[[Mini Focus Fader|miniature variations of the Focus Fader]]'''.

*'''Magnetic hall effect''' which use [[wikipedia:Hall effect sensor|Hall effect sensors]] to detect the position of a [[wikipedia:Neodymium magnet|Neodymium magnet]] attached to the wiper. Faders based on this technology include :
**'''Rane [[Rane Magnetic Fader|Magnetic Fader]]''', which was the first magnetic fader to be released, and first seen on the Rane [[TTM-56]] mixer.
**'''Vestax [[CF-X2]]''', as seen in the Vestax [[PMC-05Pro|PMC-05ProIV]] mixer and available as an option for the VCI-380 controller.

*'''Magnetic [[wikipedia:Reed switch|Reed switch]]''', which actuates when a magnet attached to the wiper is close enough. This technique was recently impletemented by '''Wax Inspektor''' in his [[Waxcutter]], but other people had experimented with them previously. It has the distinction of being the only truly passive contactless design, but it has never been commercialized.

*'''Capacitive''' sensor technology, which uses the wiper to modify the effective relative permitivity of the dielectric of multiple linearly spaced capacitor plates innit. So far the only faders based on this technology have come from Audioinnovate, i.e. :
**'''[[Innofader]]'''
**'''[[Mini Innofader]]'''

*'''Inductive''' sensor technology - lord knows how this works. I'm still investigating.
** '''Vestax [[Samurai Fader]]''' presumably(?) uses this principle
**'''[[Ecler Eternal]]''', available as an option for many Ecler HAK/NUO mixers

Faders

2020-05-26T10:02:13Z

Rasteri: /* Contactless */

The crossfader is the component of the DJ mixer that is most important to turntablists.

== Intro ==
Early DJ crossfaders were a simple carbon-track design, and contained two pairs of Logarithmic curves. This made the crossfader essentially equivalent to two back-to-back input faders. These were adequate for looping and beat-juggling, but made performing even basic scratches very difficult. In addition, the faders simply weren't designed to withstand the number of cycles a typical turntablist would put them through in a day, let alone a few years. As a result, many/most early scratch DJs used the phono/line selector switch to cut instead.

By the early 90s, performance mixers (such as the mx-2200) had faders with sharper curves, and used a carbon/plastic hybrid design to increase the durability. Still later mixers, such as the Vestax PMC Pro series, switched the passive fader design for VCA circuits. These allowed advanced features like control voltage filtering (increasing fader life even further) and curve adjustment.

The current generation of performance mixers have a wide variety of novel non-contact methods of sensing fader position.

==Fader requirements==
Turntablists have the following requirements in a crossfader :

* '''Low friction''' - the wiper should move with as little friction as possible.
* '''High durability''' - the fader should be able to withstand significant lateral and forward-backward force at all wiper positions.
* '''Long operational lifecycle''' - the faders lifecycle should be specified in the millions of operations, ideally tens of millions.
* '''Small dead zones''' - faders often have dead zones or "lag" at each end of the wiper travel, where the movement of the wiper has no effect. Large dead zones affect the ability of the mixer circuit to reduce the cut-in distance.

Other factors to consider include :

* '''Wiper weight''' - The inertia of a fader depends on its mass. For example, the Focus Fader is extremely light and thus has very little inertia, whereas the large metal stem base used in Vestax PCV faders gives them a much larger inertia.
* '''Rebound damping''' - different faders have different means of damping the wiper when it hits the interior wall of the enclosure. This affects both the amount of mechanical noise generated by the fader, as well as the efficacy of some scratch techniques that might involve bouncing the fader against the damping material. The ALPS faders used in early Vestax PMC Pro mixers have no damping whatsoever, whereas Pioneer's Magvel fader used in its most recent performance mixers have a full range of interchangeable rubber stoppers with different rebound characteristics.

==Design approaches==

===Mechanical characteristics===

Generally speaking there are two types of fader mechanical designs :

====Spring suspension====
Wipers in spring suspension faders are suspended between two metal springs - an upper spring that pushes upwards against the top of the metal enclosure, and the lower metal brush that actually makes electrical contact with the fader's carbon tracks.

These faders are cheap as they contain very few parts, and can be made very small. However, they are not very durable due to there being no strong wiper support structure and generally have a short lifespan due to the brush contacts being an integral part of the support mechanism. In addition, they are usually lubricated with a fairly viscous lubricant so are not ideal for turntablists.

Most DJ faders are of this type, including (until recently) those found in premium mixers such as the Pioneer DJM series and inexpensive passive designs such as the [[Raiden]] and [[Frisk]] faders. They are not however generally found in performance mixers for the above reason.

====Railed====
The wiper slides along one or more polished steel rails, which allows for greatly improved durability and lifespan as the mechanical support is separated from the electrical mechanism. This also allows for position sensing methods other than the traditional metal brush/carbon track combination.

Most of the faders found in performance mixers are of this type, but can be separated into two categories :

* '''Short bodied''' - these have the rails placed horizontally side-by-side. This allows the fader enclosure to be of a similar size to spring suspension designs, but some designs do not have great angular stability in the wiper as the rails are not very far apart. Performance-oriented faders in this format include :
**'''Audioinnovate [[Mini Innofader]]'''
**'''Rane [[Rane Magnetic Fader|Magnetic Fader]]'''
**'''Behringer/Rodec [[Infinium]]'''
**Various hobbyist '''[[Mini Focus Fader|miniature variations of the Focus Fader]]'''.

* '''Long bodied''' - these have the rails places vertically, one above the other. This design keeps the wiper very stable, but require a lot more space inside the mixer to accommodate the taller fader enclosure. Performance-oriented faders in this format include :
**'''Vestax [[PCV]]''' and its '''[[CF-CC]]''' variant
**'''Eclectic Breaks [[Pro X Fade]]'''
**'''Audioinnovate [[Innofader]]'''

The [[Focus Fader|Stanton CFF1 (aka Focus Fader)]] and [[Ecler Eternal]] are both combinations of long-bodied and short-bodied designs, in that the rails are side-by-side like a short bodied fader, but the enclosures themselves are long-bodied to fit in the sensors.

===Electronic characteristics===

Fader electronics can be again divided into two groups, carbon-track-based and contactless.

====Carbon track====
Most faders are based on the principle of metal brushes, usually brass or stainless-steel, contacting a PCB covered in a carbon track. The carbon track increases in resistance along its length, and this change in resistance can be used to control an audio circuit.

Early mixer designs actually made the fader a part of the audio signal path, allowing the change in resistance of the wiper to adjust the relative volume level of the output. Later mixers used the fader to generate a control voltage for a [[wikipedia:Voltage Controlled Amplifier|Voltage Controlled Amplifier]], allowing techniques such as filtering and curve adjustment. A more in-depth discussion of the crossfader support circuitry can be found in the [[crossfader circuit]] page.

Disadvantages to the carbon-track design include :

* '''Increased friction''' - since the metal brush has to be in contact with the carbon track, naturally this means there will be some friction. This can be moderated by reducing the force of the brushes and lubricating the carbon track.
* '''Limited lifespan''' - every time the wiper is moved, a few atoms of the carbon track are scraped off, and as such the lifespan of the fader is limited. Exactly how limited this is depends on the formulation of the carbon track and the maintenance level of the fader.
* '''Susceptibility to contamination''' - The brushes and tracks can gather dust and dirt, which reduces the quality of the contact and can introduce unwanted noise.

====Contactless====

As an alternative there are a number of contactless faders in the market, each based on one of these technologies :

*'''Photointerruptor''' - Invented by [[DJ Focus]], these were the first contactless performance faders to be created, and relied on the principle of the wiper interrupting a beam of infrared light at each end of the wiper travel. Faders based on this technology include :
**'''[[Focus Fader|Stanton CFF1]]''', based on Focus' earlier homebrew prototype.
**'''[[Focus Fader|Stanton CFF2]]''', which expanded the principle to include photointerruptors along the entire length of the wiper travel for full analogue position sensing.

*'''Photo Reflector''' - designs based on reflecting light off the wiper. Designs of this sort include:
** '''American Audio [[QD5 MK2]]''' optical fader

** '''Behringer/Rodec [[Infinium]]''' which is a very advanced design incorporating multiple angled sensors and a reflector printed with a [[wikipedia:Gray code|Gray code]] pattern.
**Various hobbyist '''[[Mini Focus Fader|miniature variations of the Focus Fader]]'''.

*'''Magnetic hall effect''' which use [[wikipedia:Hall effect sensor|Hall effect sensors]] to detect the position of a [[wikipedia:Neodymium magnet|Neodymium magnet]] attached to the wiper. Faders based on this technology include :
**'''Rane [[Rane Magnetic Fader|Magnetic Fader]]''', which was the first magnetic fader to be released, and first seen on the Rane [[TTM-56]] mixer.
**'''[[Ecler Eternal]]''', available as an option for many Ecler HAK/NUO mixers
**'''Vestax [[CF-X2]]''', as seen in the Vestax [[PMC-05Pro|PMC-05ProIV]] mixer and available as an option for the VCI-380 controller.

*'''Magnetic [[wikipedia:Reed switch|Reed switch]]''', which actuates when a magnet attached to the wiper is close enough. This technique was recently impletemented by '''Wax Inspektor''' in his [[Waxcutter]], but other people had experimented with them previously. It has the distinction of being the only truly passive contactless design, but it has never been commercialized.

*'''Capacitive''' sensor technology, which uses the wiper to modify the effective relative permitivity of the dielectric of multiple linearly spaced capacitor plates innit. So far the only faders based on this technology have come from Audioinnovate, i.e. :
**'''[[Innofader]]'''
**'''[[Mini Innofader]]'''

*'''Inductive''' sensor technology - lord knows how this works. I'm still investigating.
** '''Vestax [[Samurai Fader]]''' presumably(?) uses this principle

PMC Pro

2020-05-23T13:31:00Z

Rasteri: /* PMC-05ProIV */

The Vestax PMC Pro series were perhaps the most iconic scratch mixers of all time. They distinguished themselves from the earlier PMC range by using VCA circuitry. Or at least some of them did.

==Series==

===05 series===

Variants :

====PMC-05Pro====
*'''Released : ''' 1995 (according to the book Groove Music)
*'''Mixer Circuit :''' Optocoupler VCA
*'''Faders :''' ALPS
*'''Power supply :''' 15V DC
*'''Service Manual :''' [[File:PMC-05PRO.pdf]]

====PMC-05Pro Qbert/ISP Limited Edition====
*'''Released : ''' 1996 (according to the book Groove Music, also [http://estea.egloos.com/m/1136603 According to here])
*'''Mixer Circuit :''' Optocoupler VCA
*'''Faders :''' ALPS
*'''Power supply :''' 15V DC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05Pro

This model moved the monitor fader behind and to the left of the input faders, had a hamster switch, a master/cue switch, faders instead of pots for channel balance, and a fader for master volume. It also came in a choice of three fetching colours - gold, blue and red.

====PMC-05ProII====

*'''Released : ''' 1999 [http://estea.egloos.com/m/1136603 According to here]
*'''Mixer Circuit :''' JFET VCA (2SK30A-GR)
*'''Faders :''' ALPS or PCV
*'''Power supply :''' 15V DC
*'''Service Manual :''' [[File:PMC-05PRO2.pdf]]

The PMC-05ProII updated the original PMC-05 by adding a decent VCA circuit and a hamster switch.

====PMC-05ProD "Samurai"====
*'''Released : ''' God only knows
*'''Mixer Circuit :''' VCA
*'''Faders :''' [[Samurai Fader]]
*'''Power supply :''' 15V DC
*'''Service Manual :''' ?

====PMC-05ProQ====

*'''Released : ''' 2001 [http://estea.egloos.com/m/1136603 According to here]
*'''Mixer Circuit :''' JFET VCA (2SK30A-GR)?
*'''Faders :''' PCV?
*'''Power supply :''' 15V DC?
*'''Service Manual :''' Unavailable but likely very similar to PMC-05ProII
Like the 05Pro Qbert/ISP Limited edition, but based on the 05ProII's circuitry (maybe?)

====PMC-05ProIII====

*'''Released : ''' 2004 or earlier (earliest mention on vestax site)
*'''Mixer Circuit :''' JFET VCA (2SK30A-GR according to vestax spare parts list)
*'''Faders :''' PCV
*'''Power supply :''' 15V DC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05ProII

Also has an effects loop

====PMC-05ProSL====

Based on the PMC-05PROIII.
*'''Released : ''' 2004 [http://estea.egloos.com/m/1136603 According to here]
*'''Mixer Circuit :''' JFET VCA (2SK30A-GR)
*'''Faders :''' PCV
*'''Power supply :''' 15V DC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05ProIII
Features integrated 24 second sampler / delay.

====PMC-05ProIIIVCA====

*'''Released : ''' 2005 or earlier (earliest mention on vestax site)
*'''Mixer Circuit :''' JFET VCA (2SK117Y)
*'''Faders :''' PCV
*'''Power supply :''' 14V AC
*'''Service manual :''' [http://rasteri.com/servicemanuals/PMC-05ProIIIVCA.pdf]

====PMC-05ProSLVCA====

*'''Mixer Circuit :''' JFET VCA (probably 2SK117Y)
*'''Faders :''' PCV
*'''Power supply :''' 14V AC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05ProIIIVCA

====PMC-05ProIIIDX====

*'''Released :''' 2009 or earlier (That's when skratchworx reviewed it)
*'''Mixer Circuit :''' JFET VCA (probably 2SK117Y)
*'''Faders :''' PCV
*'''Power supply :''' 14V AC
*'''Service Manual :''' pending upload
Includes dedicated Send / Return connections for DVS hookup.

====PMC-05ProIV====
*'''Released : ''' 2012
*'''Mixer Circuit :''' JFET VCA (2SK117Y)
*'''Faders :''' CF-X2 Crossfader, IF-PCV Line Faders
*'''Power supply :''' 12V AC
*'''Service Manual :''' ?
Full Redesign from previous models. Additions include integrated MIDI controller for DVS control, front panel fader curve/lag/reverse controls, balanced XLR main outputs, 1/4" booth outputs, and switchable mic/line SUB input. Also features send/return connections for DVS sound cards.

===06 Series===

====PMC-06Pro====
*'''Released : ''' 1997 (According to Bomp Hiphop) or 1998 (according to the book Groove Music)
*'''Mixer Circuit :''' Optocoupler-based VCA
*'''Faders :''' ALPS
*'''Power supply :''' 15V DC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05Pro

====PMC-06T====
Not technically in the pro range - uses a dual-rail supply like the 07, and doesn't actually use a VCA at all so presumably wasn't great for scratching

*'''Released : ''' 1998 (service manual date)
*'''Mixer Circuit :''' [[Crossfader_circuit#Ground_pulldown|Ground Pulldown]]
*'''Faders :''' ALPS?
*'''Power supply :''' 12V AC
*'''Service Manual :''' [[File:Vss-pmc-06t.pdf]]

====PMC-06ProA====
*'''Mixer Circuit :''' JFET VCA (2SK30A-GR)
*'''Faders :''' ALPS or PCV
*'''Power supply :''' 15V DC
*'''Service Manual :''' Unavailable but likely very similar to PMC-05ProII

====PMC-06ProD "Samurai"====
*'''Released : ''' God only knows
*'''Mixer Circuit :''' VCA
*'''Faders :''' [[Samurai Fader]]
*'''Power supply :''' 15V DC
*'''Service Manual :''' ?

====PMC-06ProVCA====

*'''Released : ''' 2004 (according to service manual)
*'''Mixer Circuit :''' JFET VCA (2SK117Y)
*'''Faders :''' PCV
*'''Power supply :''' 14V AC
*'''Service Manual :''' [http://rasteri.com/servicemanuals/PMC-06ProVCA.pdf]

===07 Series===

====PMC-07Pro====
*'''Released : ''' 1997 or 1998 (service manual date is 1997, [http://bombhiphop.com/faq.htm#07PRO Also here])
*'''Mixer Circuit :''' Optocoupler VCA
*'''Faders :''' ALPS
*'''Power supply :''' 12V AC
*'''Service Manual :''' [[File:VSS-PMC-07PRO.pdf]]

====PMC-07ProD "Samurai"====
*'''Released : ''' God only knows
*'''Mixer Circuit :''' VCA
*'''Faders :''' [[Samurai Fader]]
*'''Power supply :''' 15V DC
*'''Service Manual :''' ?

====PMC-007====
*'''Released : ''' 2003 or 2004 (service manual date is 2003)
*'''Mixer Circuit :''' Optocoupler VCA
*'''Faders :''' PCV
*'''Power supply :''' 12V AC
*'''Service Manual :''' pending upload

SC1000 Beta

2020-03-02T11:57:50Z

Rasteri: /* NEW VERSION 0.4 */

==WARNING! THIS FIRMWARE MIGHT FUCK UP YOUR SC1000! INSTALL AT YOUR OWN RISK!!==

Although all you have to do is reflash your SD card to recover it if it fucks up.

=NEW VERSION 0.4 - [http://rasteri.com/sc1000v04.zip CLICK HERE TO DOWNLOAD]=

* Recording support! Hold down all buttons at once for a few seconds to enable, beats and samples will both jump to the start of the track to signal this. You MUST stop the recording by holding down all buttons again for 5 seconds before you turn off the SC. Files are written to the USB stick in the format (eg) "sc000001.raw", and can be imported into Audacity (or whatever) as a "raw signed 16bit little-endian 48000KHz" file.
* Perfect loops - when it gets to the end of a file it will loop back to the start with (hopefully) no glitches.
* MIDI bugfixes
* If USB stick is not detected it'll wait 10 seconds before falling back to emergency samples

==Firmware install instructions==

To upgrade your SC1000 firmware:

* Download [http://rasteri.com/sc1000v04.zip THIS FILE], and unzip it to the root of a USB stick.
* Put the usb stick in your SC1000 and turn it on, making sure it's plugged into speakers and/or headphones
* After 20 seconds or so, you should hear a message explaining that your SC1000 has been updated.
* Turn your SC1000 off and on again

You should now be running the latest version of both the operating system and the software.

==How to check what version you are running==

* Turn your SC1000 off
* Turn your beats volume up, samples volume down
* Press and hold ANY track select button on the back of the SC (doesn't matter which)
* Turn your SC1000 back on, keeping the button held
* You will eventually hear a message telling you your operating system version.

Turn the beats volume down and your samples volume up to hear the software version.

==MIDI stuff==

You can now connect USB MIDI devices to the SC1000. You'll need a USB hub to be able to connect both your USB stick and USB MIDI device at the same time.

You should be able to use any class-compliant MIDI device.

The default MIDI mapping is :

* '''Channels 1 & 2'''
** '''Notes''' - Cue points for beats (CH1) and samples (CH2). There are 128 cue points, one for each MIDI note.
** '''Pitch Bend''' - Pitch bend for beats and samples respectively
* '''Channels 3 & 4'''
** '''Notes''' - musical pitch shifting (like a Controller One/PDX3000). Middle C (Note 60) is 0% pitch.
* '''Channel 5'''
** '''Note numbers 0 (C-1) & 1 (C#-1)''' - Start/stop for beats (0) and samples (1)
** '''Note number 127 (G9)''' - Shift button (to delete cue points)

You can define your own MIDI mapping by editing scsettings.txt.

==Lemur==

I've made a preset for the MIDI app Lemur, which runs on Android and iOS phones and tablets.

It uses the default MIDI mapping above, so you should use it without adding mappings to the scsettings.txt file.

The Android version can be connected to the SC1000 with a normal USB cable, but I believe the iOS version will need an adapter like the [https://www.iconnectivity.com/products/midi/iconnectmidi2plus iConnectMIDI2+].

Steps to get this to work :

* [https://liine.net/en/products/lemur/ Install the Lemur app] on your device
* [https://liine.net/en/downloads/lemur Install the Lemur editor] on your computer (PC or Mac)
* [http://rasteri.com/sc1000.jzml Download the SC1000 Lemur preset] on your computer.
* Connect your phone to your computer and download the preset to your device using the Lemur Editor (see advice below).
* Set Lemur to use the appropriate MIDI port.
* Connect your mobile device to the SC1000, and turn it on.
* For android devices, you'll have to switch your device to MIDI mode :
** Wait till you get a notification on your phone about "Charging this phone via USB" and change it to "MIDI via USB". You have to do this within 5 seconds of the SC1000 audio starting, but you can give yourself more time by editing the "mididelay" option in the scsettings.txt file

I found transferring the preset from my computer to my phone to be a massive pain in the arse, and the Lemur staff less than helpful. You're supposed to connect them both to the same network and then the Editor automatically detects the phone, but I found I had to connect my phone to my computer via USB and enable USB tethering before it would connect, and even then I had to fiddle with the IP settings in the editor.