

Mogami GOLD SPEAKER SO-20 20' speakON Speaker Cable
- 20-foot amplifier-to-cabinet speaker cable
- 4-pole Neutrik speakON male connectors
- 14 AWG four-conductor cable
- Gold-contact straight connectors
- Low-inductance star wiring design
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The Mogami GOLD SPEAKER SO-20 is a 20-foot amplifier-to-speaker-cabinet cable for professional audio systems using 4-pole speakON connections. It is intended to carry amplified speaker-level signal between a power amplifier or bass head and a compatible cabinet. This is a speaker cable, not an instrument or line-level audio cable.
Built around Mogami W2921 quad speaker cable, the GOLD SPEAKER SO-20 uses four highly stranded 14 AWG conductors. Its low-resistance construction is designed to support efficient power transfer in demanding amplifier-to-cabinet runs. The four-conductor format also supports low-inductance star wiring.
This cable is well suited to bass rigs, live-sound speaker systems, and other setups where a secure speakON connection is preferred. The 20-foot length provides useful placement flexibility for an amplifier and cabinet on stage or in a rehearsal space. Its black PVC jacket keeps the installation appearance clean and professional.
Neutrik 4-pole speakON male plugs are fitted at both ends, providing twist-lock speaker connections. Gold contacts are specified for the connectors. Straight connector bodies make the cable easy to route from rear-mounted amplifier and cabinet connections.
The GOLD SPEAKER SO-20 fits into systems that already use 4-pole speakON-equipped amplifiers and speaker cabinets. It provides a ready-terminated alternative to assembling a bulk speaker cable and connectors separately. Mogami includes its limited lifetime manufacturer warranty with the cable.
Key Features
- 20-Foot Length: Provides flexible amplifier-to-cabinet placement.
- W2921 Speaker Cable: Uses Mogami quad speaker cable construction.
- Four 14 AWG Conductors: Supports low-resistance speaker-level signal transfer.
- Star Wiring Design: Helps maintain low inductance in the cable.
- 4-Pole speakON Plugs: Provides secure twist-lock speaker connections.
- Gold Contacts: Specified connector contacts complement the terminated design.
Design & Installation
The GOLD SPEAKER SO-20 uses a black flexible PVC outer jacket over four individually insulated NEGLEX oxygen-free copper conductors. The W2921 cable has a nominal 11.3 mm outer jacket diameter, while each insulated conductor measures 3.4 mm overall. Straight Neutrik 4-pole speakON connectors are installed at both cable ends.
Connect one end to a compatible amplifier speaker output and the other to a compatible speaker-cabinet input, then twist the speakON connectors to lock them in place. Confirm that the amplifier and cabinet use compatible 4-pole speakON connections and follow the equipment manufacturers' wiring and impedance requirements. Use this cable only for amplifier-to-passive-speaker connections, not for line-level audio or instrument connections.
| Brand | Mogami |
|---|---|
| Model | GOLD SPEAKER SO-20 |
| UPC | 801813179040 |
| Product Type | Amplifier-to-cabinet speaker cable |
| Cable Length | 20 ft |
| Cable Length (Metric) | 6.1 m |
| Bulk Cable Model | Mogami W2921 |
| Cable Construction | Quad speaker cable |
| Number of Conductors | 4 |
| Conductor Gauge | 14 AWG |
| Conductor Cross-Section | 2.53 mm² |
| Conductor Material | Bare NEGLEX oxygen-free copper |
| Conductor Strand Construction | 7/32/0.12 |
| Insulation Material | PVC |
| Insulated Conductor Diameter | 3.4 mm (0.134 in) |
| Jacket Material | Flexible PVC |
| Jacket Color | Matte black |
| Cable Outer Diameter | 11.3 mm (0.445 in) |
| Wiring Configuration | Low-inductance star wiring |
| DC Resistance | 0.008 ohm/m typical at 20°C |
| DC Resistance (Imperial) | 0.0024 ohm/ft typical at 20°C |
| Inductance, Conductors 1-2 | 0.7 µH/m at 1 kHz, 20°C |
| Inductance, Conductors 1-2 (Imperial) | 0.21 µH/ft at 1 kHz, 20°C |
| Inductance, Conductors 1-3 | 0.3 µH/m at 1 kHz, 20°C |
| Inductance, Conductors 1-3 (Imperial) | 0.09 µH/ft at 1 kHz, 20°C |
| Capacitance 1-2 at 100 Hz | 127 pF/m |
| Capacitance 1-2 at 1 kHz | 110 pF/m |
| Capacitance 1-2 at 10 kHz | 101 pF/m |
| Capacitance 1-2 at 50 kHz | 92 pF/m |
| Capacitance 1-2 at 100 kHz | 90 pF/m |
| Capacitance 1-3 at 100 Hz | 102 pF/m |
| Capacitance 1-3 at 1 kHz | 89 pF/m |
| Capacitance 1-3 at 10 kHz | 89 pF/m |
| Capacitance 1-3 at 50 kHz | 74 pF/m |
| Capacitance 1-3 at 100 kHz | 71 pF/m |
| Insulation Resistance | 10,000 megohm·m minimum at 125 VDC, 20°C |
| Voltage Breakdown | 500 VDC for 15 seconds |
| Operating Temperature | -20°C to 70°C (-4°F to 158°F) |
| Cable Standard | UL13 CL2, 75°C |
| Connector Brand | Neutrik |
| Connector Type | speakON male to speakON male |
| Connector Pole Count | 4-pole |
| Connector Orientation | Straight to straight |
| Contact Finish | Gold contacts |
| Package Weight | 2.9 lb |
| Package Dimensions | 9 x 9 x 2.13 in |
| Included Items | One 20-foot Mogami GOLD SPEAKER SO-20 cable |
| Warranty | Limited lifetime manufacturer warranty |
Will this work with my amplifier and speaker cabinet?
It is intended for an amplifier and speaker cabinet equipped with compatible 4-pole speakON connections. Confirm connector compatibility and the required speaker wiring configuration in your amplifier and cabinet documentation.
Can I use this as a guitar or instrument cable?
No. This is a speaker-level cable designed to connect a power amplifier or amplifier head to a speaker cabinet. It should not be used in place of an instrument or line-level audio cable.
How long is the GOLD SPEAKER SO-20?
The cable is 20 feet long, or approximately 6.1 meters. This measurement is for the finished cable assembly.
What connectors are included?
It has straight Neutrik 4-pole speakON male plugs on both ends. The connectors are specified with gold contacts.
What cable is used inside this assembly?
The GOLD SPEAKER SO-20 is made with Mogami W2921 four-conductor speaker cable. Each conductor is 14 AWG and uses stranded NEGLEX oxygen-free copper.
Is a warranty included?
Yes. The cable includes Mogami's limited lifetime manufacturer warranty. Warranty coverage is subject to the manufacturer's terms.
Shipping
- Free 2nd-Day Air shipping on this item
- FREE Next-Day Air on orders over $499
- Orders placed on business days are typically processed the same day, delivery estimates are shown at checkout.
Warranty & Returns
- Authorized Dealer, Audio Watt Inc. is an authorized dealer, every item is factory sealed with full US manufacturer warranty
- 60-Day Returns, Hassle-free returns, see our return policy for details
- Price Match Promise, We match verified prices from authorized US retailers, see policy for terms

Mogami GOLD SPEAKER SO-20 20' speakON Speaker Cable


















