FIELD GUIDESource-led reference
Port & Cable

E128 · Source-scoped pinout variants

4-pole speakON loudspeaker connector engineering reference

Neutrik NL4FXX-W-* terminal designations only; never an AC/DC mains or power-supply connector.

Open field noteSource trail

Source checked · no independent review claimed · Fabrication approved: no

4-pole speakON terminal-designation reference original orientation schematic
Original pinout diagram; read the exact variant and view below. Not to scale.

Orientation

How to read this profile

Terminal labels only; no mating-face geometry is asserted in the V35 data model.

Source-scoped identification facts

Each value retains its exact example, role and measurement axis. Facts from different parts must not be combined into an invented component.

Documented examples; not a mating drawing or compatibility approval
Nominal contacts4S103Nominal contact count; some implementations may omit populated positions. It is not a wiring map.
Connector rolecable socket (NL4FXX-W-S)S918Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NL4FXX-W-S. Documented role: cable socket. Current product PDF differs from olderBDA63830Arating. Preserve old source record and contextualize dates.; Not for ACmains or power supply use; not for interrupting current. Acceptance diameter6–12mm is not connector width.
Mountingcable (Claim C128C); cable (Claim C128D)S103 · S194 · S496Recorded source-scoped values; named examples do not describe every family variant or establish compatibility. Terminal designations for the named speakON cable-connector family only; not a bi-amping/channel assignment or live-connection approval Named chassis exclusion; the two-to-four cable/chassis relationship is not reciprocal.
Coupling / latchTwist lock; mechanically aligned insert/chuck/housing (NL4FXX-W-S)S918Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NL4FXX-W-S. Documented role: cable socket. Current product PDF differs from olderBDA63830Arating. Preserve old source record and contextualize dates.; Not for ACmains or power supply use; not for interrupting current. Acceptance diameter6–12mm is not connector width.
ManufacturerNeutrik (NL4FXX-W-S)S918Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NL4FXX-W-S. Documented role: cable socket. Current product PDF differs from olderBDA63830Arating. Preserve old source record and contextualize dates.; Not for ACmains or power supply use; not for interrupting current. Acceptance diameter6–12mm is not connector width.
SeriesspeakON 4-pole (NL4FXX-W-S)S918Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NL4FXX-W-S. Documented role: cable socket. Current product PDF differs from olderBDA63830Arating. Preserve old source record and contextualize dates.; Not for ACmains or power supply use; not for interrupting current. Acceptance diameter6–12mm is not connector width.
Exact part / implementationNL4FXX-W-S (NL4FXX-W-S)S918Named source examples retain separate role, part, view and axis limits; values are not a universal family specification. NL4FXX-W-S. Documented role: cable socket. Current product PDF differs from olderBDA63830Arating. Preserve old source record and contextualize dates.; Not for ACmains or power supply use; not for interrupting current. Acceptance diameter6–12mm is not connector width.

Not recorded: Positions / cavity span, Populated contacts, Contact rows, Contact pitch, Dimensions / axis, Contact gender / arrangement, Keying / polarization, Shell / form, Recorded markings, View convention. Unknown fields stay unknown; illustrations supply no measurements or pin assignments.

Recorded variant and source limits
  • Bi-amping, channel assignment and amplifier/speaker wiring remain device-specific.
  • Generic mating dimensions are not published.
  • Neutrik 4-pole speakON contact designations (NL4MP chassis, NL4FXX cable): Neutrik contact designations.
  • Neutrik wiring suggestion: stereo on one NL4MP socket: Neutrik designations.
  • Neutrik wiring suggestion: bi-amp on one NL4MP socket: Neutrik designations.
  • Yamaha PX10/PX8/PX5/PX3 SPEAKERS A NL4 output: Yamaha p. 11 drawing shows the NL4 receptacle with 1+/1-/2+/2- legends.
  • Yamaha PX10/PX8/PX5/PX3 SPEAKERS B NL4 output: As channel A.
  • Neutrik NL4MP contact designations (no application): Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.
  • Yamaha PX10/PX8/PX5/PX3 SPEAKERS A (channel A) NL4MD output: Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.
  • Yamaha PX10/PX8/PX5/PX3 SPEAKERS B (channel B) NL4MD output: Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.
  • Neutrik wiring suggestion: bi-amp on one NL4 cable: Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.
  • Prior view context (not a source-view value): Terminal labels only; no mating-face geometry is asserted in the V35 data model.
Report a correction to these facts →

Pins & wiring

Pinout

Choose the exact wiring. Pin numbers follow its stated view; a schematic does not establish physical positions. Check your exact device before wiring.

What the status labels mean
Confirmed
Recorded research passes agree within this variant; this is not independent human review or hardware validation.
Single source
Only one underlying document, or one pass, supports this assignment.
Device-specific
Supported for the named equipment or wiring only. Check your device’s manual.
Unverified
Missing or conflicting evidence. Do not wire from this row.
Not connected
The source explicitly says NC, no contact or no pin for this wiring.
Wiring variant

Neutrik 4-pole speakON contact designations (NL4MP chassis, NL4FXX cable)

View and evidence limits

Neutrik contact designations.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik PG p. 16 shows a bridged-mono example, but the extracted text pairs 1+ to speaker '+' and 1- with 2+ to speaker '-' in a way that could not be resolved from text alone; no device manual for bridge mode on speakON was retrieved.
  • Only the Yamaha PX series was checked.
4-pole speakON terminal-designation referenceNeutrik contact designations.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: 1+ (single_source)1+1-: 1- (single_source)1-2+: 2+ (single_source)2+2-: 2- (single_source)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Neutrik 4-pole speakON contact designations (NL4MP chassis, NL4FXX cable) — source-scoped contact map
PinSignalWhat it doesStatus
1+1+Control, detection or configuration connection; check the source and device.Single source
Sources
1-1-Control, detection or configuration connection; check the source and device.Single source
Sources
2+2+Control, detection or configuration connection; check the source and device.Single source
Sources
2-2-Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (2)

Neutrik wiring suggestion: stereo on one NL4MP socket

View and evidence limits

Neutrik designations.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Application suggestion by Neutrik, not a mandatory standard.
  • Neutrik PG p. 16 shows a bridged-mono example, but the extracted text pairs 1+ to speaker '+' and 1- with 2+ to speaker '-' in a way that could not be resolved from text alone; no device manual for bridge mode on speakON was retrieved.
  • Only the Yamaha PX series was checked.
4-pole speakON terminal-designation referenceNeutrik designations.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: Left + (single_source)1+1-: Left - (single_source)1-2+: Right + (single_source)2+2-: Right - (single_source)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Neutrik wiring suggestion: stereo on one NL4MP socket — source-scoped contact map
PinSignalWhat it doesStatus
1+Left +Control, detection or configuration connection; check the source and device.Single source
Sources
1-Left -Control, detection or configuration connection; check the source and device.Single source
Sources
2+Right +Control, detection or configuration connection; check the source and device.Single source
Sources
2-Right -Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)

Neutrik wiring suggestion: bi-amp on one NL4MP socket

View and evidence limits

Neutrik designations.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik: 'Lower numbers for lower frequencies.'
  • Neutrik PG p. 16 shows a bridged-mono example, but the extracted text pairs 1+ to speaker '+' and 1- with 2+ to speaker '-' in a way that could not be resolved from text alone; no device manual for bridge mode on speakON was retrieved.
  • Only the Yamaha PX series was checked.
4-pole speakON terminal-designation referenceNeutrik designations.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: LF + (single_source)1+1-: LF - (single_source)1-2+: HF + (single_source)2+2-: HF - (single_source)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Neutrik wiring suggestion: bi-amp on one NL4MP socket — source-scoped contact map
PinSignalWhat it doesStatus
1+LF +Control, detection or configuration connection; check the source and device.Single source
Sources
1-LF -Control, detection or configuration connection; check the source and device.Single source
Sources
2+HF +Control, detection or configuration connection; check the source and device.Single source
Sources
2-HF -Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A NL4 output

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Yamaha p. 11 drawing shows the NL4 receptacle with 1+/1-/2+/2- legends.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik PG p. 16 shows a bridged-mono example, but the extracted text pairs 1+ to speaker '+' and 1- with 2+ to speaker '-' in a way that could not be resolved from text alone; no device manual for bridge mode on speakON was retrieved.
  • Only the Yamaha PX series was checked.
4-pole speakON terminal-designation referenceYamaha p. 11 drawing shows the NL4 receptacle with 1+/1-/2+/2- legends.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: A+ (device_specific)1+1-: A- (device_specific)1-2+: B+ (device_specific)2+2-: B- (device_specific)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Yamaha PX10/PX8/PX5/PX3 SPEAKERS A NL4 output — source-scoped contact map
PinSignalWhat it doesStatus
1+A+Control, detection or configuration connection; check the source and device.Device-specific
Sources
1-A-Control, detection or configuration connection; check the source and device.Device-specific
Sources
2+B+Control, detection or configuration connection; check the source and device.Device-specific
Sources
2-B-Control, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B NL4 output

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

As channel A.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik PG p. 16 shows a bridged-mono example, but the extracted text pairs 1+ to speaker '+' and 1- with 2+ to speaker '-' in a way that could not be resolved from text alone; no device manual for bridge mode on speakON was retrieved.
  • Only the Yamaha PX series was checked.
4-pole speakON terminal-designation referenceAs channel A.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: B+ (device_specific)1+1-: B- (device_specific)1-2+: (not connected) (not_connected)2+2-: (not connected) (not_connected)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Yamaha PX10/PX8/PX5/PX3 SPEAKERS B NL4 output — source-scoped contact map
PinSignalWhat it doesStatus
1+B+Control, detection or configuration connection; check the source and device.Device-specific
Sources
1-B-Control, detection or configuration connection; check the source and device.Device-specific
Sources
2+(not connected)Not connected or absent in this named wiring.Not connected
Sources
2-(not connected)Not connected or absent in this named wiring.Not connected
Sources
Sources (1)

Neutrik NL4MP contact designations (no application)

View and evidence limits

Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik's suggestion page shows a bridged-mono 'M' socket (left 1+/1-, right 2+/2-) and speaker-side wiring (1+ to coil +, 1- and 2+ to coil -); it is a suggestion, not a device specification, and was not recorded as a variant.
  • Neutrik suggests left on 1+/1- and right on 2+/2- for stereo on one NL4; recorded only as a note.
  • Only Yamaha PX was established; other amplifiers may route channels differently.
4-pole speakON terminal-designation referenceNeutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: 1+ (single_source)1+1-: 1- (single_source)1-2+: 2+ (single_source)2+2-: 2- (single_source)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Neutrik NL4MP contact designations (no application) — source-scoped contact map
PinSignalWhat it doesStatus
1+1+Control, detection or configuration connection; check the source and device.Single source
Sources
1-1-Control, detection or configuration connection; check the source and device.Single source
Sources
2+2+Control, detection or configuration connection; check the source and device.Single source
Sources
2-2-Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A (channel A) NL4MD output

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik's suggestion page shows a bridged-mono 'M' socket (left 1+/1-, right 2+/2-) and speaker-side wiring (1+ to coil +, 1- and 2+ to coil -); it is a suggestion, not a device specification, and was not recorded as a variant.
  • Neutrik suggests left on 1+/1- and right on 2+/2- for stereo on one NL4; recorded only as a note.
  • Only Yamaha PX was established; other amplifiers may route channels differently.
4-pole speakON terminal-designation referenceNeutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: A+ (device_specific)1+1-: A- (device_specific)1-2+: B+ (device_specific)2+2-: B- (device_specific)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Yamaha PX10/PX8/PX5/PX3 SPEAKERS A (channel A) NL4MD output — source-scoped contact map
PinSignalWhat it doesStatus
1+A+Control, detection or configuration connection; check the source and device.Device-specific
Sources
1-A-Control, detection or configuration connection; check the source and device.Device-specific
Sources
2+B+Control, detection or configuration connection; check the source and device.Device-specific
Sources
2-B-Control, detection or configuration connection; check the source and device.Device-specific
Sources
Sources (1)

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B (channel B) NL4MD output

Device-specific wiring. Check your device’s manual before connecting or applying power.

View and evidence limits

Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik's suggestion page shows a bridged-mono 'M' socket (left 1+/1-, right 2+/2-) and speaker-side wiring (1+ to coil +, 1- and 2+ to coil -); it is a suggestion, not a device specification, and was not recorded as a variant.
  • Neutrik suggests left on 1+/1- and right on 2+/2- for stereo on one NL4; recorded only as a note.
  • Only Yamaha PX was established; other amplifiers may route channels differently.
4-pole speakON terminal-designation referenceNeutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: B+ (device_specific)1+1-: B- (device_specific)1-2+: (not connected) (not_connected)2+2-: (not connected) (not_connected)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Yamaha PX10/PX8/PX5/PX3 SPEAKERS B (channel B) NL4MD output — source-scoped contact map
PinSignalWhat it doesStatus
1+B+Control, detection or configuration connection; check the source and device.Device-specific
Sources
1-B-Control, detection or configuration connection; check the source and device.Device-specific
Sources
2+(not connected)Not connected or absent in this named wiring.Not connected
Sources
2-(not connected)Not connected or absent in this named wiring.Not connected
Sources
Sources (1)

Neutrik wiring suggestion: bi-amp on one NL4 cable

View and evidence limits

Neutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.

  • P128 speakON 4-pole — **Agree** on contact names and on the Yamaha PX mapping (channel A socket: 1± = A, 2± = B; channel B socket: 1± = B, 2± not connected) and Neutrik's bi-amp suggestion (1± LF, 2± HF) — A also records Neutrik's stereo suggestion.
  • Neutrik's suggestion page shows a bridged-mono 'M' socket (left 1+/1-, right 2+/2-) and speaker-side wiring (1+ to coil +, 1- and 2+ to coil -); it is a suggestion, not a device specification, and was not recorded as a variant.
  • Neutrik suggests left on 1+/1- and right on 2+/2- for stereo on one NL4; recorded only as a note.
  • Only Yamaha PX was established; other amplifiers may route channels differently.
4-pole speakON terminal-designation referenceNeutrik contact designations 1+, 1-, 2+, 2-; BDA 458 shows the NL4MP from the rear (tab) side. Do not transfer positions to the mating face.SCHEMATIC · physical positions unconfirmedNot to scale · check the named wiring and device manual1+: Low frequency + (single_source)1+1-: Low frequency - (single_source)1-2+: High frequency + (single_source)2+2-: High frequency - (single_source)2-powergrounddataConfigshieldNCUnknown
Schematic only · physical contact positions unconfirmed. Original drawing · not to scale. Scroll sideways if needed.
Neutrik wiring suggestion: bi-amp on one NL4 cable — source-scoped contact map
PinSignalWhat it doesStatus
1+Low frequency +Control, detection or configuration connection; check the source and device.Single source
Sources
1-Low frequency -Control, detection or configuration connection; check the source and device.Single source
Sources
2+High frequency +Control, detection or configuration connection; check the source and device.Single source
Sources
2-High frequency -Control, detection or configuration connection; check the source and device.Single source
Sources
Sources (1)

Unknowns stay unknown.

  • Bi-amping, channel assignment and amplifier/speaker wiring remain device-specific.
  • Generic mating dimensions are not published.

Your next step

Use the detail without guessing past its limits.

Read the connector field note Recognition clues and practical checks.Work through a connection Keep exact equipment and cable requirements separate.

Source trail

Claims and sources

C128Asource checked

Neutrik NL4FXX-W-S is a four-contact speakON connector.

Neutrik · NL4FXX-W-S four-pole speakON ↗
Product; Electrical / contact count; Attention · No bi-amping layout, wire gauge, mating approval for other families or safe live-disconnection claim.

C128Bsource checked

Neutrik excludes use as an AC mains or power-supply connector.

Neutrik · NL4FXX-W-S four-pole speakON ↗
Product; Electrical / contact count; Attention · No bi-amping layout, wire gauge, mating approval for other families or safe live-disconnection claim.

C128Csource checked

Neutrik’s documented four-pole speakON cable-connector assembly identifies terminals 1+, 1−, 2− and 2+.

Neutrik · NL4FXX-W-S four-pole speakON ↗
Product; Electrical / contact count; Attention · No bi-amping layout, wire gauge, mating approval for other families or safe live-disconnection claim.

Neutrik · speakON NL2FXX-W-* & NL4FXX-W-* assembly instruction ↗
Page 1; WIRING: 2 POLE and WIRING: 4 POLE · Terminal designation reference only. V35 does not turn the assembly sheet into a device-level channel assignment or live-connection approval.

C805Nsource checked

Neutrik 4-pole speakON contact designations (NL4MP chassis, NL4FXX cable): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Neutrik · Assembly Instruction speakON Chassis Connector NL2MP & NL4MP & NL8MPR (BDA 458) ↗
p. 1, NL2MP / NL4MP / NL8MPR 'WIRING' drawings (contact legends) · Source scope and unresolved evidence are preserved in the engineering variant.

Neutrik · Assembly Instruction speakON Loudspeaker Cable Connector NL2FXX-W-* & NL4FXX-W-* (BDA 638) ↗
p. 1, 'WIRING: 2 POLE' and 'WIRING: 4 POLE' drawings · Source scope and unresolved evidence are preserved in the engineering variant.

C805Osource checked

Neutrik wiring suggestion: stereo on one NL4MP socket: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Neutrik · Product Guide, Section 03 speakON (EN) ↗
p. 16, 'speakON Wiring' - 'Wiring Suggestion' panel (polarity note and per-application pin use) · Source scope and unresolved evidence are preserved in the engineering variant.

C805Psource checked

Neutrik wiring suggestion: bi-amp on one NL4MP socket: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Neutrik · Product Guide, Section 03 speakON (EN) ↗
p. 16, 'speakON Wiring' - 'Wiring Suggestion' panel (polarity note and per-application pin use) · Source scope and unresolved evidence are preserved in the engineering variant.

C805Qsource checked

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A NL4 output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Yamaha · PX10/PX8/PX5/PX3 Reference Manual (English) ↗
p. 11, 'Speaker connection' > 'speakON connector', Channel A and Channel B tables (Neutrik NL4 vs PX amplifier); p. 9, 'Rear panel' illustration, [SPEAKERS] A/B panel legends 'TIP POS / SLEEVE NEG' and 'NEG: INVERTED OUTPUT'; p. 9, item 16 [INPUT] A/B connectors, 'Phone jack - Balanced TRS phone jack' polarity drawing · Source scope and unresolved evidence are preserved in the engineering variant.

C805Rsource checked

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B NL4 output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Yamaha · PX10/PX8/PX5/PX3 Reference Manual (English) ↗
p. 11, 'Speaker connection' > 'speakON connector', Channel A and Channel B tables (Neutrik NL4 vs PX amplifier); p. 9, 'Rear panel' illustration, [SPEAKERS] A/B panel legends 'TIP POS / SLEEVE NEG' and 'NEG: INVERTED OUTPUT'; p. 9, item 16 [INPUT] A/B connectors, 'Phone jack - Balanced TRS phone jack' polarity drawing · Source scope and unresolved evidence are preserved in the engineering variant.

C805Ssource checked

Neutrik NL4MP contact designations (no application): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Neutrik · Assembly Instruction, speakON Chassis Connector NL2MP & NL4MP & NL8MPR ↗
p. 1, NL2MP section, 'WIRING' drawing (rear/tab side) labelled 1+ and 1-; p. 1, NL4MP section, 'WIRING' drawing labelled 1+, 1-, 2+, 2-; p. 1, NL8MPR section, 'WIRING' drawing labelled 1+ through 4- · Source scope and unresolved evidence are preserved in the engineering variant.

C805Tsource checked

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A (channel A) NL4MD output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Yamaha · PX10/PX8/PX5/PX3 Power Amplifier Owner's Manual ↗
p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel A Neutrik NL4' (1+ A+, 1- A-, 2+ B+, 2- B-); p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel B Neutrik NL4' (1+ B+, 1- B-, 2+/2- not connected) · Source scope and unresolved evidence are preserved in the engineering variant.

C805Usource checked

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B (channel B) NL4MD output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Yamaha · PX10/PX8/PX5/PX3 Power Amplifier Owner's Manual ↗
p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel A Neutrik NL4' (1+ A+, 1- A-, 2+ B+, 2- B-); p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel B Neutrik NL4' (1+ B+, 1- B-, 2+/2- not connected) · Source scope and unresolved evidence are preserved in the engineering variant.

C805Vsource checked

Neutrik wiring suggestion: bi-amp on one NL4 cable: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Neutrik · speakON Wiring - Wiring Suggestion (catalogue page 71) ↗
p. 1 (catalogue p. 71), legend: '"+" = In phase (high) "-" = Ground (out of phase, low)'; p. 1 (catalogue p. 71), table row '4 Way System'; p. 1 (catalogue p. 71), table row 'Bi-Amp' and 'Bi-Amp' drawing · Source scope and unresolved evidence are preserved in the engineering variant.

9 source records support this profile. No independent engineering review or hardware validation is claimed.

Evidence behind this page

Scope first. Source second. Approval separate.

9 linked sources · 12 scoped claims · 0 sources with inspection/access flags.

Page scope: No source geometry reproduced; terminal designations are presented as text only.

Assessment 2026-10-22 · earliest scheduled source review 2027-01-01. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 9 source scopes, access limits and dates

S103 · NL4FXX-W-S four-pole speakON

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: Four-contact speakON loudspeaker connector and its no-mains boundary.

Not established / limitations: No bi-amping layout, wire gauge, mating approval for other families or safe live-disconnection claim.

Locator: Product; Electrical / contact count; Attention

S194 · speakON NL2FXX-W-* & NL4FXX-W-* assembly instruction

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-05 · due 2027-01-03

Within inspection window

Scoped support: Terminal designations shown for the documented 2-pole and 4-pole cable connectors: 1+/1− and 1+/1−/2−/2+ respectively.

Not established / limitations: Terminal designation reference only. V35 does not turn the assembly sheet into a device-level channel assignment or live-connection approval.

Locator: Page 1; WIRING: 2 POLE and WIRING: 4 POLE

S704 · PX10/PX8/PX5/PX3 Reference Manual (English)

Yamaha · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 11, 'Speaker connection' > 'speakON connector', Channel A and Channel B tables (Neutrik NL4 vs PX amplifier); p. 9, 'Rear panel' illustration, [SPEAKERS] A/B panel legends 'TIP POS / SLEEVE NEG' and 'NEG: INVERTED OUTPUT'; p. 9, item 16 [INPUT] A/B connectors, 'Phone jack - Balanced TRS phone jack' polarity drawing

S749 · Assembly Instruction speakON Chassis Connector NL2MP & NL4MP & NL8MPR (BDA 458)

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 1, NL2MP / NL4MP / NL8MPR 'WIRING' drawings (contact legends)

S751 · Product Guide, Section 03 speakON (EN)

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 16, 'speakON Wiring' - 'Wiring Suggestion' panel (polarity note and per-application pin use)

S752 · Assembly Instruction, speakON Chassis Connector NL2MP & NL4MP & NL8MPR

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-20 · due 2027-01-18

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 1, NL2MP section, 'WIRING' drawing (rear/tab side) labelled 1+ and 1-; p. 1, NL4MP section, 'WIRING' drawing labelled 1+, 1-, 2+, 2-; p. 1, NL8MPR section, 'WIRING' drawing labelled 1+ through 4-

S753 · speakON Wiring - Wiring Suggestion (catalogue page 71)

Neutrik · Manufacturer / product-owner domain · inspected 2026-10-20 · due 2027-01-18

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 1 (catalogue p. 71), legend: '"+" = In phase (high) "-" = Ground (out of phase, low)'; p. 1 (catalogue p. 71), table row '4 Way System'; p. 1 (catalogue p. 71), table row 'Bi-Amp' and 'Bi-Amp' drawing

S754 · PX10/PX8/PX5/PX3 Power Amplifier Owner's Manual

Yamaha · Manufacturer / product-owner domain · inspected 2026-10-21 · due 2027-01-19

Within inspection window

Scoped support: Exact named pinout variant only; not capability or compatibility approval.

Not established / limitations: Source scope and unresolved evidence are preserved in the engineering variant.

Locator: p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel A Neutrik NL4' (1+ A+, 1- A-, 2+ B+, 2- B-); p. 2, [SPEAKERS] A/B terminals, wiring drawing 'Channel B Neutrik NL4' (1+ B+, 1- B-, 2+/2- not connected)

Trace 12 claims to their source records

C128A · P128

Neutrik NL4FXX-W-S is a four-contact speakON connector.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S103 · Evidence trail → (private workspace)

C128B · P128

Neutrik excludes use as an AC mains or power-supply connector.

Claim scope: Identification and explicitly scoped documentation only; not an end-to-end connection approval

Source links: S103 · Evidence trail → (private workspace)

C128C · P128

Neutrik’s documented four-pole speakON cable-connector assembly identifies terminals 1+, 1−, 2− and 2+.

Claim scope: Terminal designations for the named speakON cable-connector family only; not a bi-amping/channel assignment or live-connection approval

Source links: S103 · S194 · Evidence trail → (private workspace)

C805N · P128

Neutrik 4-pole speakON contact designations (NL4MP chassis, NL4FXX cable): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S749 · S750 · Evidence trail → (private workspace)

C805O · P128

Neutrik wiring suggestion: stereo on one NL4MP socket: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S751 · Evidence trail → (private workspace)

C805P · P128

Neutrik wiring suggestion: bi-amp on one NL4MP socket: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S751 · Evidence trail → (private workspace)

C805Q · P128

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A NL4 output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S704 · Evidence trail → (private workspace)

C805R · P128

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B NL4 output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S704 · Evidence trail → (private workspace)

C805S · P128

Neutrik NL4MP contact designations (no application): original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S752 · Evidence trail → (private workspace)

C805T · P128

Yamaha PX10/PX8/PX5/PX3 SPEAKERS A (channel A) NL4MD output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S754 · Evidence trail → (private workspace)

C805U · P128

Yamaha PX10/PX8/PX5/PX3 SPEAKERS B (channel B) NL4MD output: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S754 · Evidence trail → (private workspace)

C805V · P128

Neutrik wiring suggestion: bi-amp on one NL4 cable: original contact normalization. Statuses distinguish comparison agreement, source limits and named-device wiring.

Claim scope: Pinout variant only; see comparison and per-contact status. Not fabrication approval.

Source links: S753 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.