Banana jack colour schemes: Difference between revisions

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== Considerations ==
== Considerations ==
In the UK Rapid only sell 4mm bannana sockets in {{font color|white|black|&nbsp;black&nbsp;}}, {{font color|white|red|&nbsp;red&nbsp;}}, {{font color|black|white|&nbsp;white&nbsp;}}, {{font color|white|green|&nbsp;green&nbsp;}}, {{font color|white|blue|&nbsp;blue&nbsp;}} and {{font color|black|yellow|&nbsp;yellow&nbsp;}}.<ref>[http://www.rapidonline.com/cables-connectors/4mm-insulated-test-socket-83057 4mm Insulated Test Socket], Rapid Electronics Limited</ref>
In the UK Rapid only sell 4&nbsp;mm bannana sockets in {{font color|white|black|&nbsp;black&nbsp;}}, {{font color|white|red|&nbsp;red&nbsp;}}, {{font color|black|white|&nbsp;white&nbsp;}}, {{font color|white|green|&nbsp;green&nbsp;}}, {{font color|white|blue|&nbsp;blue&nbsp;}} and {{font color|black|yellow|&nbsp;yellow&nbsp;}}.<ref>[https://web.archive.org/web/20150606211113/http://www.rapidonline.com/Cables-Connectors/4mm-Insulated-Test-Socket-83057 4&nbsp;mm Insulated Test Socket], Rapid Electronics Limited</ref>


There isn't always a clear distinction between audio and control signals. It's more important to distinguish between inputs and outputs. There might be some unusual connections such as inputs with restrictions and ground for external patching.<ref>[http://electro-music.com/forum/post-232550.html Frac rack Banana Jack...some spec guidlines], Electro-music forum, March 2009</ref><ref name="ccyi">[https://www.muffwiggler.com/forum/viewtopic.php?p=206828 If you could color code your inputs....], Muff Wiggler forum, April 2010</ref>
There isn't always a clear distinction between audio and control signals. It's more important to distinguish between inputs and outputs. There might be some unusual connections such as inputs with restrictions and ground for external patching.<ref>[http://electro-music.com/forum/post-232550.html Frac rack Banana Jack...some spec guidlines], Electro-music forum, March 2009</ref><ref name="ccyi">[https://www.modwiggler.com/forum/viewtopic.php?p=206828 If you could color code your inputs....], Mod Wiggler forum, April 2010</ref>


Patch cords are color coded to indicate their length.<ref>Buchla 200e User's Guide, p. 2</ref>
Patch cords are color coded to indicate their length.<ref>Buchla 200e User's Guide, p. 2</ref>
Line 11: Line 11:
On [[Buchla Electronic Musical Instruments|Buchla]] synthesizers the audio and contol paths and control are kept seperate. The control path uses EF Johnson banana jacks and swings between +/-15V, while the audio path is at 1.228V RMS, (+4dBu professional line level) and uses 0.141" Tini-Jax.<ref name="wb">[http://buchlatech.blogspot.co.uk/2008/10/why-buchla.html Why Buchla?], Buchla tech blog, 4 Oct 2008</ref><ref name="as">[http://buchlatech.blogspot.co.uk/2008/10/good-thing-about-standards-so-many-to.html The Good Thing About Standards: So Many To Choose From], Buchla Tech blog, 7 October 2007</ref>
On [[Buchla Electronic Musical Instruments|Buchla]] synthesizers the audio and contol paths and control are kept seperate. The control path uses EF Johnson banana jacks and swings between +/-15V, while the audio path is at 1.228V RMS, (+4dBu professional line level) and uses 0.141" Tini-Jax.<ref name="wb">[http://buchlatech.blogspot.co.uk/2008/10/why-buchla.html Why Buchla?], Buchla tech blog, 4 Oct 2008</ref><ref name="as">[http://buchlatech.blogspot.co.uk/2008/10/good-thing-about-standards-so-many-to.html The Good Thing About Standards: So Many To Choose From], Buchla Tech blog, 7 October 2007</ref>
{|class="wikitable"
{|class="wikitable"
!Function!!Color<ref name="as"/><ref name="ccyi"/><ref>[http://www.soundonsound.com/reviews/buchla-200e-part-1 Buchla 200e: Part 1] by Gordon Reid, SOS, Dec 2005</ref>!!Comment
!Signal!!Color<ref name="as" /><ref name="ccyi" /><ref>[http://www.soundonsound.com/reviews/buchla-200e-part-1 Buchla 200e: Part 1] by Gordon Reid, SOS, Dec 2005</ref>!!Comment
|-
|-
|Pulse input||{{font color|black|orange|&nbsp;orange&nbsp;}}||Gate/trigger/clock.
| Pulse input||{{font color|black|orange|&nbsp;orange&nbsp;}}||Gate/trigger/clock.
|-
|-
|Pulse output||{{font color|white|red|&nbsp;red&nbsp;}}||Gate/trigger/clock. Until the late 70s red was for both pulse input and output.<ref>[http://buchlatech.blogspot.co.uk/2008/10/audities-foundation-got-whatever-parts.html The 266 project], Buchla tech blog, 4 Oct 2008</ref>
| Pulse output||{{font color|white|red|&nbsp;red&nbsp;}}||Gate/trigger/clock. Until the late 70s red was for both pulse input and output.<ref>[http://buchlatech.blogspot.co.uk/2008/10/audities-foundation-got-whatever-parts.html The 266 project], Buchla tech blog, 4 Oct 2008</ref>
|-
|-
|CV input||{{font color|white|black|&nbsp;black&nbsp;}} or {{font color|white|grey|&nbsp;grey&nbsp;}}||Grey for [[Buchla 292e|292e]] velocity CV in.<ref name="sjcl">[https://www.muffwiggler.com/forum/viewtopic.php?p=477117 serge jack color logic], Muff Wiggler forum, May 2011</ref>
| CV input||{{font color|white|black|&nbsp;black&nbsp;}} or {{font color|white|grey|&nbsp;grey&nbsp;}}||Grey for [[Buchla 292e|292e]] velocity CV in.<ref name="sjcl">[https://www.modwiggler.com/forum/viewtopic.php?p=477117 serge jack color logic], Mod Wiggler forum, May 2011</ref>
|-
|-
|CV output||{{font color|white|blue|&nbsp;blue&nbsp;}}, {{font color|white|green|&nbsp;green&nbsp;}} or {{font color|white|purple|&nbsp;purple&nbsp;}}||Green is second channel/style of some CV out (e.g. velocity out), purple is third channel/style of some CV out (e.g. [[Buchla 296e|296e]] even outs).<ref name="sjcl"/>
| CV output||{{font color|white|blue|&nbsp;blue&nbsp;}}, {{font color|white|green|&nbsp;green&nbsp;}} or {{font color|white|purple|&nbsp;purple&nbsp;}}||Green is second channel/style of some CV out (e.g. velocity out), purple is third channel/style of some CV out (e.g. [[Buchla 296e|296e]] even outs).<ref name="sjcl" />
|}
|}


== BugBrand ==
== BugBrand ==
Most modular synth signals can be thought of as either audio or control. The system ground jack provides a ground for connecting to external systems with screened (3.5 mm or 1/4") jacks, so that the signal can be carried with single wire cables (white in Bugbrand interface packs).<ref>[http://www.bugbrand.co.uk/index.php?main_page=index&cPath=2_21 OldBlue Overview (archive)], BugBrand</ref><ref>[https://www.muffwiggler.com/forum/viewtopic.php?t=153752 Connecting eurorack with bugbrand 1 frame (grounding)], Muff Wiggler forum, Jan 2016</ref>
Most modular synth signals can be thought of as either audio or control. The system ground jack provides a ground for connecting to external systems with screened (3.5 mm or 1/4") jacks, so that the signal can be carried with single wire cables (white in Bugbrand interface packs).<ref>[http://www.bugbrand.co.uk/index.php?main_page=index&cPath=2_21 OldBlue Overview (archive)], BugBrand</ref><ref>[https://www.modwiggler.com/forum/viewtopic.php?t=153752 Connecting eurorack with bugbrand 1 frame (grounding)], Mod Wiggler forum, Jan 2016</ref>
{|class="wikitable"
{|class="wikitable"
!Function!!Color<ref>[http://www.bugbrand.co.uk/bugbrand_old/pages/modular.htm Technicals], BugBrand Modular Synth</ref>!!Comment
!Signal!!Color<ref>[http://www.bugbrand.co.uk/bugbrand_old/pages/modular.htm Technicals], BugBrand Modular Synth</ref>!!Comment
|-
|-
|CV in||{{font color|white|blue|&nbsp;blue&nbsp;}}||
| CV in||{{font color|white|blue|&nbsp;blue&nbsp;}}||
|-
|-
|CV out||{{font color|white|red|&nbsp;red&nbsp;}}||
| CV out||{{font color|white|red|&nbsp;red&nbsp;}}||
|-
|-
| Audio in||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
| Audio in||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
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| Audio out||{{font color|white|green|&nbsp;green&nbsp;}}||
| Audio out||{{font color|white|green|&nbsp;green&nbsp;}}||
|-
|-
|System ground||{{font color|white|black|&nbsp;black&nbsp;}}||
| System ground||{{font color|white|black|&nbsp;black&nbsp;}}||
|}
|}


== Kilpatrick Audio ==
== Castle Rocktronics ==
Tries to have a different colours for each different type of input, although just one colour for all outputs.<ref name="cr">[http://castlerocktronics.com/modular/articles/CR-000_-_Power_Supply_and_System_Overview.pdf Power distribution & system overview], Castle Rocktronics</ref>
=== Front panel ===

Regards audio and control signals as interchangeable.<ref name="kfts">[http://www.kilpatrickaudio.com/manuals/kformat/spec/kilpatrick_format-spec-1.0.pdf Kilpatrick Format Technical Specifications]</ref>
{|class="wikitable"
{|class="wikitable"
!Function!!Color<ref name="kfts"/>!!Comment
!Signal!!Color<ref name="cr" />!!Comment
|-
|-
|CV/audio output||{{font color|white|grey|&nbsp;grey&nbsp;}}||
| Output||{{font color|white|red|&nbsp;red&nbsp;}}||Often audio, but also CVs, envelopes and triggers.<ref name="cr" />
|-
|-
|CV/audio input||{{font color|white|black|&nbsp;black&nbsp;}}||
| Input||{{font color|white|black|&nbsp;black&nbsp;}}||Audio, CV or digital. Examples: Filter input, mixer input, data input.<ref name="cr" />
|-
|-
| CV in||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||Envelopes, LFOs and other analog control signals. Anything where the actual voltage matters. Examples: Cut-off frequency, gain.<ref name="cr" />
|Pulse and gate output||{{font color|white|red|&nbsp;red&nbsp;}}||
|-
|-
| Clock in||{{font color|white|blue|&nbsp;blue&nbsp;}}||Digital. Not necessarily a fixed frequency, any input that causes the circuit to “step forward” by one on a rising or falling edge. Examples: Counters, step-sequencers.<ref name="cr" />
|Pulse and gate Input||{{font color|black|white|&nbsp;white&nbsp;}}||
|-
| Trigger in||{{font color|white|green|&nbsp;green&nbsp;}}||Digital. One-shot events that trigger on a rising or falling edge. Examples: percussion, resets.<ref name="cr" />
|-
| Gate in||{{font color|black|white|&nbsp;white&nbsp;}}||Digital inputs that act according to whether they are high or low, rather than triggering on an edge. Examples: Analog switches.<ref name="cr" />
|}
|}


=== Internal power ===
== CGS ==
[[CatGirl Synth|CGS]] mostly uses the Serge scheme, sometimes colorful just for fun.

{|class="wikitable"
{|class="wikitable"
!Signal!!Color<ref>[http://serge-fans.com/new.html#FAQ Serge Fans FAQ]</ref><ref>[http://www.carbon111.com/serge_index.html Serge Guidebook] by Rich Gold.</ref><ref>Ken Stone</ref>!!Comment
!Function!!Color<ref name="kfts"/>!!Comment
|-
|-
| +15V||{{font color|white|red|&nbsp;red&nbsp;}}||
| Audio or signal||{{font color|white|black|&nbsp;black&nbsp;}}||AC coupled signals
|-
|-
| -15V||{{font color|white|grey|&nbsp;grey&nbsp;}}||
| CVs||{{font color|white|blue|&nbsp;blue&nbsp;}}||DC coupled signals
|-
|-
|AGND and DGND||{{font color|white|black|&nbsp;black&nbsp;}}||
| Pulse in/out||{{font color|white|red|&nbsp;red&nbsp;}}||Trigger signals
|-
| [[Wired-OR]] capable gate/trig output||{{font color|black|orange|&nbsp;orange&nbsp;}}||
|}
|}


== Castle Rocktronics ==
== Ciat-Lonbarde ==
Cool colors are inputs and hot colors are outputs.
Tries to have a different colours for each different type of input, although just one colour for all outputs.<ref name="cr">[http://castlerocktronics.com/modular/articles/CR-000_-_Power_Supply_and_System_Overview.pdf Power distribution & system overview], Castle Rocktronics</ref>
{|class="wikitable"
!Signal!!Color<ref>[https://web.archive.org/web/20200114173534/http://www.ciat-lonbarde.net/plumbutter/index.html Plumbutter] by Ciat-Lonbarde</ref><ref>[http://www.modwiggler.com/forum/viewtopic.php?t=35461&start=20 serge jack color logic], Mod Wiggler forum, Mar 2013</ref><ref>[https://www.modwiggler.com/forum/viewtopic.php?f=65&t=195308&p=2741388&hilit=Ciat+Lonbarde+color#p2741388 Plumbutter 2 quick start], Mod Wiggler forum, Jan 2018</ref>!!Comment
|-
| Ground||{{font color|white|black|&nbsp;black&nbsp;}}||To connect other gear.
|-
| CV in||{{font color|white|blue|&nbsp;blue&nbsp;}}||
|-
| Clock/trig in||{{font color|white|green|&nbsp;green&nbsp;}}||
|-
| FM in||{{font color|white|purple|&nbsp;purple&nbsp;}}||
|-
| Pulse out & clock/trig in||{{font color|white|brown|&nbsp;brown&nbsp;}}||
|-
| Random out||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|-
| Audio out||{{font color|black|white|&nbsp;white&nbsp;}}||
|-
| Ultrasound out||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
|-
| Pulse out||{{font color|white|red|&nbsp;red&nbsp;}}||
|-
| CV out||{{font color|black|orange|&nbsp;orange&nbsp;}}||
|}


== Elby Designs Panther ==
Elby Designs Panther 3.5mm (EuroRack) and 4&nbsp;mm banana jacks colour scheme is expanded from the one used by Serge (AC, DC and logic). Differentiating between input, output and special for each signal type.<ref>[http://www.elby-designs.com/webtek/panther/panther-jacks.htm Panther Jacks – 3.5mm and 4&nbsp;mm Coloured Jacks]</ref>
{| class="wikitable"
!rowspan="2"|signal!!colspan="3"|colour!!rowspan="2"|comment
|-
!in!!out!!special
|-
| AC||{{font color|white|black|&nbsp;black&nbsp;}}||{{font color|black|white|&nbsp;white&nbsp;}}||{{font color|white|grey|&nbsp;grey&nbsp;}}||e.g. VCO
|-
| DC||{{font color|white|blue|&nbsp;blue&nbsp;}}||{{font color|white|green|&nbsp;green&nbsp;}}||{{font color|white|purple|&nbsp;purple&nbsp;}}||e.g. CVs
|-
| Logic||{{font color|white|red|&nbsp;red&nbsp;}}||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||{{font color|black|orange|&nbsp;orange&nbsp;}}||e.g. gates and triggers
|}

== Loudest Warning ==
People have also used the Serge STS or Random*Source schemes.
{|class="wikitable"
{|class="wikitable"
!Signal!!Color<ref>Charlie Kerr</ref><ref>[https://www.modwiggler.com/forum/viewtopic.php?f=17&t=97747&start=300 <nowiki>[IC]</nowiki> 4U Single Function 'Sergesque' panels], Mod Wiggler Forum, 20 Aug 2014, 09:24</ref>!!Comment
!Function!!Color<ref name="cr"/>!!Comment
|-
|-
|Output||{{font color|white|red|&nbsp;red&nbsp;}}||Often audio, but also CVs, envelopes and triggers.<ref name="cr"/>
| CV in||{{font color|white|blue|&nbsp;blue&nbsp;}}||
|-
|-
|Input||{{font color|white|black|&nbsp;black&nbsp;}}||Audio, CV or digital. Examples: Filter input, mixer input, data input.<ref name="cr"/>
| CV out||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|-
|-
|CV in||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||Envelopes, LFOs and other analog control signals. Anything where the actual voltage matters. Examples: Cut-off frequency, gain.<ref name="cr"/>
| AC/audio in||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
|-
|-
| AC/audio out||{{font color|white|green|&nbsp;green&nbsp;}}||
|Clock in||{{font color|white|blue|&nbsp;blue&nbsp;}}||Digital. Not necessarily a fixed frequency, any input that causes the circuit to “step forward” by one on a rising or falling edge. Examples: Counters, step-sequencers.<ref name="cr"/>
|-
|-
|Trigger in||{{font color|white|green|&nbsp;green&nbsp;}}||Digital. One-shot events that trigger on a rising or falling edge. Examples: percussion, resets.<ref name="cr"/>
| Logic/trigger/gate in||{{font color|black|white|&nbsp;white&nbsp;}}||
|-
|-
| Logic/trigger/gate out||{{font color|white|red|&nbsp;red&nbsp;}}||
|Gate in||{{font color|black|white|&nbsp;white&nbsp;}}||Digital inputs that act according to whether they are high or low, rather than triggering on an edge. Examples: Analog switches.<ref name="cr"/>
|-
| Sync in||{{font color|white|purple|&nbsp;purple&nbsp;}}||
|-
| Special out||{{font color|black|orange|&nbsp;orange&nbsp;}}||e.g. wirable OR
|-
| Ground||{{font color|white|black|&nbsp;black&nbsp;}}||
|}

== Kilpatrick Audio ==
=== Front panel ===
Regards audio and control signals as interchangeable.<ref name="kfts">[https://web.archive.org/web/20160429142536/http://kilpatrickaudio.com/manuals/kformat/spec/kilpatrick_format-spec-1.0.pdf Kilpatrick Format Technical Specifications]</ref>
{|class="wikitable"
!Signal!!Color<ref name="kfts" />!!Comment
|-
| CV/audio input||{{font color|white|black|&nbsp;black&nbsp;}}||
|-
| CV/audio output||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|-
| Pulse and gate Input||{{font color|black|white|&nbsp;white&nbsp;}}||
|-
| Pulse and gate output||{{font color|white|red|&nbsp;red&nbsp;}}||
|}

=== Internal power ===
{|class="wikitable"
!Signal!!Color<ref name="kfts" />!!Comment
|-
| +15V||{{font color|white|red|&nbsp;red&nbsp;}}||
|-
| -15V||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|-
| AGND and DGND||{{font color|white|black|&nbsp;black&nbsp;}}||
|}
|}


== Modcan-A ==
== Modcan-A ==
{|class="wikitable"
{|class="wikitable"
!Function!!Color<ref>[http://www.modcan.com/amodules/A%20Series%20manual.pdf Modcan A Series manual]</ref>!!Comment
!Signal!!Color<ref>[http://www.modcan.com/amodules/A%20Series%20manual.pdf Modcan A Series manual]</ref>!!Comment
|-
|-
|signal in||{{font color|white|grey|&nbsp;grey&nbsp;}}||
| Signal in||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|-
|-
|CV in||{{font color|black|white|&nbsp;white&nbsp;}}||
| CV in||{{font color|black|white|&nbsp;white&nbsp;}}||
|-
|-
|signal or CV out||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
| Signal or CV out||{{font color|black|yellow|&nbsp;yellow&nbsp;}}||
|-
|-
|gate/trigger/logic/sync in or out||{{font color|white|red|&nbsp;red&nbsp;}}||
| Gate/trigger/logic/sync in or out||{{font color|white|red|&nbsp;red&nbsp;}}||
|}
|}


== Serge ==
== Serge ==
The Serge scheme is more about the type signal than its function but with some flexibility e.g. some CVs can go negative. Many black inputs are AC coupled, but most black outputs are not.<ref name="maint">[https://www.muffwiggler.com/forum/viewtopic.php?t=24954 Serge Maintenance Info], Muff Wiggler forum, Nov 2010</ref><ref name="if">[https://www.muffwiggler.com/forum/viewtopic.php?p=205598 If you could color code your inputs....], Muff Wiggler forum, Apr 2010</ref>
The [[Serge Modular Music System|Serge]] scheme is more about the type signal than its function but with some flexibility e.g. some CVs can go negative. Many black inputs are AC coupled, but most black outputs are not.<ref name="maint">[https://www.modwiggler.com/forum/viewtopic.php?t=24954 Serge Maintenance Info], Mod Wiggler forum, Nov 2010</ref><ref name="if">[https://www.modwiggler.com/forum/viewtopic.php?p=205598 If you could color code your inputs....], Mod Wiggler forum, Apr 2010</ref>


{|class="wikitable"
{|class="wikitable"
!Function!!Color<ref>[http://serge-fans.com/new.html#FAQ Serge Fans FAQ]</ref><ref>[http://www.carbon111.com/serge_index.html Serge Guidebook] by Rich Gold.</ref>!!Comment
!Signal!!Color<ref>[https://web.archive.org/web/20210722001640/http://serge.synth.net/documents/1976sergemanual.pdf Introduction to the use of the Serge Modular Music System], 1976, p. 14</ref><ref>[http://serge-fans.com/new.html#FAQ Serge Fans FAQ]</ref><ref>[http://www.carbon111.com/serge_index.html Serge Guidebook] by Rich Gold.</ref>!!Comment
|-
|Trigger pulses in/out||{{font color|white|red|&nbsp;red&nbsp;}}||
|-
|CVs in/out||{{font color|white|blue|&nbsp;blue&nbsp;}}||
|-
|-
|audio or signal||{{font color|white|black|&nbsp;black&nbsp;}}||AC coupled signals
|Bipolar CV in/out||{{font color|white|black|&nbsp;black&nbsp;}}||
|-
|-
|CVs||{{font color|white|blue|&nbsp;blue&nbsp;}}||DC coupled signals
|Audio in/out||{{font color|white|black|&nbsp;black&nbsp;}}||
|-
|-
|pulse in/out||{{font color|white|red|&nbsp;red&nbsp;}}||trigger signals
|Special functions in/out||{{font color|black|yellow|&nbsp;yellow&nbsp;}},{{font color|black|orange|&nbsp;orange&nbsp;}},{{font color|white|green|&nbsp;green&nbsp;}}<ref name="animal"/>||
|-
|-
|sync||{{font color|white|purple|&nbsp;purple&nbsp;}}||pink noise out on the Animal panel<ref>[http://carbon111.com/animal.html The Serge "Animal" - a massive modular in 4U]</ref><ref name="animal">[https://www.muffwiggler.com/forum/viewtopic.php?p=507650&highlight=#507650 Best of CGS Build Thread], Muff Wiggler forum, 1 Jul 2011</ref>
|Sync in||{{font color|white|purple|&nbsp;purple&nbsp;}}||Pink noise out on the Animal panel<ref>[http://carbon111.com/animal.html The Serge "Animal" - a massive modular in 4U]</ref><ref name="animal">[https://www.modwiggler.com/forum/viewtopic.php?p=507650&highlight=#507650 Best of CGS Build Thread], Mod Wiggler forum, 1 Jul 2011</ref>
|-
|-
|White Noise out<ref>[https://www.modwiggler.com/forum/viewtopic.php?f=19&t=24954 Serge Maintenance Info], Mod Wiggler Forum, Nov. 2010</ref>||{{font color|white|grey|&nbsp;grey&nbsp;}}||
|special uses||{{font color|black|yellow|&nbsp;yellow&nbsp;}} or {{font color|white|green|&nbsp;yellow&nbsp;}}<ref name="animal"/>||
|}
|}


Line 117: Line 200:


== External links ==
== External links ==
* [http://www.comdyna.com/gp6panb.htm Comdyna GP-6 analog computer patch panel] and color coding, just for curiosity.
* [https://web.archive.org/web/20170825015720/http://www.comdyna.com/gp6panb.htm Comdyna GP-6 analog computer patch panel] and color coding, just for curiosity.
* [http://electro-music.com/forum/post-232550.html Frac rack Banana Jack...some spec guidlines], Electro-music.com forum, Mar 2009
* [http://electro-music.com/forum/post-232550.html Frac rack Banana Jack...some spec guidlines], Electro-music.com forum, Mar 2009
* [https://www.muffwiggler.com/forum/viewtopic.php?p=1453367 Color Coding of Knobs, Inputs and Outputs], Muff Wiggler forum, Feb 2014
* [https://www.modwiggler.com/forum/viewtopic.php?p=1453367 Color Coding of Knobs, Inputs and Outputs], Mod Wiggler forum, Feb 2014


[[Category:Connectors]]
[[Category:Connectors]]

Latest revision as of 18:46, 15 February 2023

Banana jack colour schemes used by modular synth brands for which some reference has been found. Note that there is no universal accepted standard.

Considerations

In the UK Rapid only sell 4 mm bannana sockets in  black ,  red ,  white ,  green ,  blue  and  yellow .[1]

There isn't always a clear distinction between audio and control signals. It's more important to distinguish between inputs and outputs. There might be some unusual connections such as inputs with restrictions and ground for external patching.[2][3]

Patch cords are color coded to indicate their length.[4]

Buchla 200e

On Buchla synthesizers the audio and contol paths and control are kept seperate. The control path uses EF Johnson banana jacks and swings between +/-15V, while the audio path is at 1.228V RMS, (+4dBu professional line level) and uses 0.141" Tini-Jax.[5][6]

Signal Color[6][3][7] Comment
Pulse input  orange  Gate/trigger/clock.
Pulse output  red  Gate/trigger/clock. Until the late 70s red was for both pulse input and output.[8]
CV input  black  or  grey  Grey for 292e velocity CV in.[9]
CV output  blue ,  green  or  purple  Green is second channel/style of some CV out (e.g. velocity out), purple is third channel/style of some CV out (e.g. 296e even outs).[9]

BugBrand

Most modular synth signals can be thought of as either audio or control. The system ground jack provides a ground for connecting to external systems with screened (3.5 mm or 1/4") jacks, so that the signal can be carried with single wire cables (white in Bugbrand interface packs).[10][11]

Signal Color[12] Comment
CV in  blue 
CV out  red 
Audio in  yellow 
Audio out  green 
System ground  black 

Castle Rocktronics

Tries to have a different colours for each different type of input, although just one colour for all outputs.[13]

Signal Color[13] Comment
Output  red  Often audio, but also CVs, envelopes and triggers.[13]
Input  black  Audio, CV or digital. Examples: Filter input, mixer input, data input.[13]
CV in  yellow  Envelopes, LFOs and other analog control signals. Anything where the actual voltage matters. Examples: Cut-off frequency, gain.[13]
Clock in  blue  Digital. Not necessarily a fixed frequency, any input that causes the circuit to “step forward” by one on a rising or falling edge. Examples: Counters, step-sequencers.[13]
Trigger in  green  Digital. One-shot events that trigger on a rising or falling edge. Examples: percussion, resets.[13]
Gate in  white  Digital inputs that act according to whether they are high or low, rather than triggering on an edge. Examples: Analog switches.[13]

CGS

CGS mostly uses the Serge scheme, sometimes colorful just for fun.

Signal Color[14][15][16] Comment
Audio or signal  black  AC coupled signals
CVs  blue  DC coupled signals
Pulse in/out  red  Trigger signals
Wired-OR capable gate/trig output  orange 

Ciat-Lonbarde

Cool colors are inputs and hot colors are outputs.

Signal Color[17][18][19] Comment
Ground  black  To connect other gear.
CV in  blue 
Clock/trig in  green 
FM in  purple 
Pulse out & clock/trig in  brown 
Random out  grey 
Audio out  white 
Ultrasound out  yellow 
Pulse out  red 
CV out  orange 

Elby Designs Panther

Elby Designs Panther 3.5mm (EuroRack) and 4 mm banana jacks colour scheme is expanded from the one used by Serge (AC, DC and logic). Differentiating between input, output and special for each signal type.[20]

signal colour comment
in out special
AC  black   white   grey  e.g. VCO
DC  blue   green   purple  e.g. CVs
Logic  red   yellow   orange  e.g. gates and triggers

Loudest Warning

People have also used the Serge STS or Random*Source schemes.

Signal Color[21][22] Comment
CV in  blue 
CV out  grey 
AC/audio in  yellow 
AC/audio out  green 
Logic/trigger/gate in  white 
Logic/trigger/gate out  red 
Sync in  purple 
Special out  orange  e.g. wirable OR
Ground  black 

Kilpatrick Audio

Front panel

Regards audio and control signals as interchangeable.[23]

Signal Color[23] Comment
CV/audio input  black 
CV/audio output  grey 
Pulse and gate Input  white 
Pulse and gate output  red 

Internal power

Signal Color[23] Comment
+15V  red 
-15V  grey 
AGND and DGND  black 

Modcan-A

Signal Color[24] Comment
Signal in  grey 
CV in  white 
Signal or CV out  yellow 
Gate/trigger/logic/sync in or out  red 

Serge

The Serge scheme is more about the type signal than its function but with some flexibility e.g. some CVs can go negative. Many black inputs are AC coupled, but most black outputs are not.[25][26]

Signal Color[27][28][29] Comment
Trigger pulses in/out  red 
CVs in/out  blue 
Bipolar CV in/out  black 
Audio in/out  black 
Special functions in/out  yellow , orange , green [30]
Sync in  purple  Pink noise out on the Animal panel[31][30]
White Noise out[32]  grey 

References

  1. ^ 4 mm Insulated Test Socket, Rapid Electronics Limited
  2. ^ Frac rack Banana Jack...some spec guidlines, Electro-music forum, March 2009
  3. ^ a b If you could color code your inputs...., Mod Wiggler forum, April 2010
  4. ^ Buchla 200e User's Guide, p. 2
  5. ^ Why Buchla?, Buchla tech blog, 4 Oct 2008
  6. ^ a b The Good Thing About Standards: So Many To Choose From, Buchla Tech blog, 7 October 2007
  7. ^ Buchla 200e: Part 1 by Gordon Reid, SOS, Dec 2005
  8. ^ The 266 project, Buchla tech blog, 4 Oct 2008
  9. ^ a b serge jack color logic, Mod Wiggler forum, May 2011
  10. ^ OldBlue Overview (archive), BugBrand
  11. ^ Connecting eurorack with bugbrand 1 frame (grounding), Mod Wiggler forum, Jan 2016
  12. ^ Technicals, BugBrand Modular Synth
  13. ^ a b c d e f g h Power distribution & system overview, Castle Rocktronics
  14. ^ Serge Fans FAQ
  15. ^ Serge Guidebook by Rich Gold.
  16. ^ Ken Stone
  17. ^ Plumbutter by Ciat-Lonbarde
  18. ^ serge jack color logic, Mod Wiggler forum, Mar 2013
  19. ^ Plumbutter 2 quick start, Mod Wiggler forum, Jan 2018
  20. ^ Panther Jacks – 3.5mm and 4 mm Coloured Jacks
  21. ^ Charlie Kerr
  22. ^ [IC] 4U Single Function 'Sergesque' panels, Mod Wiggler Forum, 20 Aug 2014, 09:24
  23. ^ a b c Kilpatrick Format Technical Specifications
  24. ^ Modcan A Series manual
  25. ^ Serge Maintenance Info, Mod Wiggler forum, Nov 2010
  26. ^ If you could color code your inputs...., Mod Wiggler forum, Apr 2010
  27. ^ Introduction to the use of the Serge Modular Music System, 1976, p. 14
  28. ^ Serge Fans FAQ
  29. ^ Serge Guidebook by Rich Gold.
  30. ^ a b Best of CGS Build Thread, Mod Wiggler forum, 1 Jul 2011
  31. ^ The Serge "Animal" - a massive modular in 4U
  32. ^ Serge Maintenance Info, Mod Wiggler Forum, Nov. 2010

External links

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