Operating Manual for Genelec 1234A Smart Active Monitor

Quick Guide

The Genelec 1234A is a high-performance Smart Active Monitor designed for large control rooms. Setup requires the Genelec Loudspeaker Manager (GLM) software for calibration. The system consists of a monitor enclosure and a separate RAM-XL amplifier unit. Ensure the amplifier and enclosure serial numbers match, as they are calibrated as a pair. Proper ventilation and flush mounting are recommended for optimal acoustic performance.

General Description

The 1234A system includes a 160-litre enclosure with two 305 mm bass drivers, a 130 mm midrange driver, and a 25 mm treble driver. The midrange and treble drivers are mounted in a rotatable Directivity Control Waveguide (DCW) to allow for horizontal or vertical orientation. The RAM-XL amplifier provides high-precision digital signal processing and overload protection.

Installation and Mounting

Flush mounting is strongly recommended for acoustical reasons. When flush mounting, ensure the enclosure is flush with the wall surface. If using a decorative cloth frame, ensure the material is acoustically transparent. The DCW plate can be rotated by unscrewing the eight M5 fixing screws with a 4 mm Allen key. Ensure the midrange and treble drivers are aligned vertically (treble on top) for optimum stereo symmetry.

Connections

The RAM-XL amplifier connects to the monitor enclosure using the provided 4-pole Speakon cables. Connect the "WOOFER" and "MIDRANGE/TWEETER" sockets on the amplifier to the corresponding sockets on the monitor. The "LED" connector is for the front panel warning light. The "CONTROL NETWORK" RJ45 sockets are used for the GLM network; do not connect these to an Ethernet LAN.

Setup and Use

The 1234A is configured using GLM software. Link all monitors and subwoofers in a daisy-chain using CAT5 (RJ45) cables from the GLM Adapter to the "CONTROL NETWORK" connectors. Connect the GLM Adapter to your computer via USB. Place the Genelec measurement microphone at the listening position, pointing upwards at ear height. Follow the GLM software instructions to measure and calibrate the system. You can store settings into the monitors if you do not wish to keep a computer connected.

Operation

The power button on the RAM-XL front panel controls power and testing modes. A short press turns the unit on or off. Intelligent Signal Sensing (ISS) can be activated via GLM software to automatically put the monitor into power-saving standby mode when no audio signal is detected. The front panel light indicates status: green for normal operation, yellow for GLM activity, and red for overload or error conditions.

Maintenance and Safety

Periodically check the protective grille on the cooling fan on the back of the RAM-XL amplifier for blockages and clean with a vacuum cleaner if necessary. Ensure sufficient clearance (at least 100 mm) behind the amplifier for air circulation. Servicing must only be performed by qualified personnel. Do not open the enclosure or amplifier. Ensure the mains connection is earthed.