The SAJP411 steel recessed jack plate provides a professional solution for PA speaker cabinet builders, sound technicians, and mobile DJs who need reliable dual-connector mounting options. This versatile plate accommodates either dual Speakon or dual XLR connectors using the industry-standard Series D mounting pattern.

Built from durable steel construction with a black powder-coated finish, this jack plate delivers the strength needed for road use and frequent cable changes. The recessed design protects connectors from damage while providing easy access for quick connections during setup and teardown.

The plate measures 6 3/4" x 5 1/2" overall and requires a cabinet cutout of 5 1/4" x 3 7/8". The Series D mounting holes accept standard Speakon NL4MP or XLR connectors (sold separately), making this plate compatible with most professional audio connector systems. The serviceable design allows for easy connector replacement or upgrades without cabinet modifications.

This jack plate works well for custom PA builds, speaker cabinet repairs, or upgrading existing systems with dual-connector capability. Sound companies building line array elements or floor monitors benefit from the dual-connector design that enables daisy-chaining multiple cabinets. Churches and venues upgrading older speaker systems can modernize their connectivity while maintaining cabinet integrity.

Installation requires basic woodworking tools and appropriate connectors for your specific application. The plate ships ready to mount with your choice of Speakon or XLR connectors.

Seismic Audio backs the SAJP411 with a one-year warranty and ships nationwide to keep your PA system projects moving forward.

Technical Specifications

Frequently Asked Questions

What connectors work with this jack plate?

The SAJP411 uses the industry-standard Series D mounting pattern, which accommodates Neutrik Speakon NL4MP connectors or standard XLR panel-mount connectors. The mounting holes are sized specifically for these professional audio connector types. Connectors are sold separately, allowing you to choose the specific connector type that matches your PA system requirements.

What cabinet cutout size do I need for installation?

You'll need to cut a rectangular opening measuring 5 1/4" x 3 7/8" in your speaker cabinet. The jack plate's overall dimensions are 6 3/4" x 5 1/2", providing adequate overlap around the cutout for secure mounting. Use a router or jigsaw for clean cuts, and test-fit the plate before final installation to ensure proper alignment.

Can I use this for both input and output connections on the same cabinet?

Yes, the dual-connector design makes this jack plate ideal for daisy-chaining applications where you need both input from your amplifier and output to additional speakers. This setup is common in line array systems, floor monitor chains, and multi-speaker installations where signal needs to pass through multiple cabinets in series.

Will this work for upgrading older PA speaker cabinets?

Absolutely. The SAJP411 works well for modernizing older cabinets that may have outdated 1/4" phone jacks or damaged connector plates. The recessed design and standard mounting pattern make it compatible with most professional speaker cabinet construction. You may need to modify the existing cutout to match the required 5 1/4" x 3 7/8" dimensions.

How does the recessed design benefit road use?

The recessed design protects connectors from impact damage during transport and storage by keeping them below the cabinet surface level. This reduces the risk of bent connector pins or housing damage when speakers are stacked or moved. The steel construction adds durability for frequent cable changes and the rigors of mobile sound applications.

WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer. For more information, go to: www.P65Warnings.ca.gov