Extron V-Lock Wall Bracket (part number 70-534-02) — black replacement V-Lock wall assembly, sold as a pair, for the System INTEGRATOR SI 26 and SI 28 two-way surface mount speakers. Extron lists this part as retired.

Each assembly is the wall-mounted half of the V-Lock system: a wall plate plus the locking stage that carries the V-lock groove. Fitting it inverts the usual order of work. The plate goes on the wall first, on its own, with the stage rotated 90° out of the way so the fixings are reachable, and speaker cable passed through the wiring access hole. Only then does the speaker go up. An SI 26 lifts over the groove and slides straight down until it locks. An SI 28 is heavier and hooks differently — the right edge of its box bracket engages first, the speaker swivels until the left edge catches, and then it slides down. Final aim is set with the hex cap screw behind the Extron badge, torqued clockwise six to eight turns until the speaker cannot be lifted out.

Key Capabilities

• Replacement wall plate and locking stage for SI 26 and SI 28 speakers.
• Supplied as two individual mounting kits, one per speaker, with an Allen hex tool.
• Three primary and four secondary mounting holes in the wall plate.
• Stage rotates 90° to expose the wall fixings during installation.
• Wiring access hole passes speaker cable behind the plate.
• Provision for the seismic safety cable to be reattached to the speaker.
• Hex cap screw locks the aimed angle and deters removal of the speaker.

Where It Is Used

Legacy SI 26 and SI 28 installations in schools, universities, corporate training rooms and municipal buildings — ordered when a bracket has been damaged, when speakers are being relocated during a refit, or when an estate needs spares for a discontinued mounting system.

Specifications at a Glance

• Compatible speakers: System INTEGRATOR SI 26, SI 28
• Sold as: pair, black
• Wall plate holes: 3 primary, 4 secondary
• Kit contents: two mounting kits plus Allen hex tool
• Status: retired Extron part number

Also referenced as Extron VLockWallBracket, V-Lock-Wall-Bracket, part number 7053402.