AUDAC TRM224/B – 70/100V Transformer Module for VEXO112/115, Black

What is the AUDAC TRM224/B 70/100V transformer module?

The AUDAC TRM224/B is a 70/100V line transformer module that converts the passive VEXO112 and VEXO115 loudspeakers for use on distributed constant-voltage systems. It offers 240 W and 120 W power taps on a 100 V line and 120 W and 60 W taps on a 70 V line. The black module lets integrators run high-performance VEXO cabinets in large multi-speaker installations such as auditoriums, houses of worship and sports facilities.

How does the AUDAC TRM224/B 70/100V transformer module work?

The TRM224 is supplied as a complete aluminium backplate with a copper toroidal transformer already integrated. Installation is done by removing the standard backplate from the passive VEXO112 or VEXO115 and fitting the 70/100V backplate in its place. On a 100 V line, the module provides taps of 20.83 Ω (240 W), 41.67 Ω (240 W) and 83.33 Ω (120 W); on a 70 V line, the 41.67 Ω tap delivers 120 W and the 83.33 Ω tap delivers 60 W, while the 20.83 Ω tap is not used. The secondary impedance is 8 Ω to match the loudspeaker, and frequency response is 50 Hz – 20 kHz (±3 dB). The amplifier line connects through an external 8-pin terminal block, and the module connects to the loudspeaker internally with a 2-pin connector. Mounting hardware is included: an M8 x 80 mm (3.15 in) mounting bolt, a Ø 90 mm (3.54 in) metal washer, a rubber washer, an M8 washer and an M8 spring washer. Selecting a lower tap lets designers balance the level of each cabinet against the total power budget of the 70 V or 100 V amplifier. The module is finished in black (RAL9005) to match the cabinet, and the same module is available in white as the TRM224/W.

What are the key features of the AUDAC TRM224/B 70/100V transformer module?

• Converts VEXO112 and VEXO115 — The module adapts the passive VEXO112 and VEXO115 loudspeakers for 70 V and 100 V distributed systems.
• 240 W and 120 W taps — On a 100 V line it offers 240 W and 120 W taps, and on a 70 V line 120 W and 60 W taps.
• Integrated backplate — The transformer comes mounted on an aluminium backplate that replaces the speaker's standard backplate.
• Copper toroidal transformer — A toroidal transformer design provides 50 Hz – 20 kHz (±3 dB) response.
• Terminal block line connection — An external 8-pin terminal block accepts the amplifier line for a secure connection.
• Mounting hardware included — The bolt and washer set needed to install the module ships in the box.
• Color-matched finish — The black RAL9005 finish matches the black VEXO cabinets.

Where is the AUDAC TRM224/B 70/100V transformer module typically used?

• Auditorium
• House of worship
• Multi-purpose room
• All-hands room
• Sports facilities

Technical Specifications

Frequently Asked Questions