4 IN 8 OUT LOUDSPEAKER MANAGEMENT SYSTEM
Categories: Loudspeaker Management System
The Erthpot Keyer LM48 is a professional-grade digital speaker management system, designed to deliver precise control and advanced audio processing for multi-speaker environments. Featuring an interactive LCD and an intuitive embedded GUI, it enables quick, efficient parameter adjustments and system management. Equipped with a stable, linear-phase 512-tap custom FIR filter, the LM48 ensures accurate, high-quality audio performance. It supports input/output channel duplication, channel binding, and multi-scene saving and recall, offering flexible system configuration and seamless setup changes. With a convenient rotary encoder for menu navigation, the LM48 is user-friendly and integrates effortlessly with other Erthpot audio solutions. Ideal for live sound reinforcement, theatres, nightclubs, concert halls, and similar professional venues, the Keyer LM48 is built to meet the demands of modern audio control applications.
| INPUT INTERFACES | 4 Analog |
|---|---|
| OUTPUT INTERFACES | 8 Analog |
| DISPLAY | Embedded GUI interface, quick adjustment of parameters |
| CONTROL INTERFACES | 1 RJ45 interface, 1 RS232 interface, 1 USB Type B |
| INPUT CHANNEL | Functional module: Mute, Gain, Delay (0-180ms), 31-band Graphic Equalizer, Expander, Compressor. Physical interface: Balanced XLR female connectors XLR female connectors. |
| OUTPUT CHANNEL | Functional module: Delay (0-60ms), Crossover, 15-band Parametric Equalizer (filter type selectable Low Shelf, High Shelf), Gain, Mute, Limiter, Phase. Physical interface: Balanced XLR male connectors. |
| INPUT IMPEDANCE | Balanced: 20KΩ |
| OUTPUT IMPEDANCE | Balanced: 100Ω |
| FREQUENCY RESPONSE | 20Hz～20KHz, ±0.2dB |
| NOISE FLOOR | -90dBu |
| THD+N | ≤0.002% @1kHz, +4dBu |
| CHANNEL ISOLATION | CHANNEL ISOLATION |
| INPUT RANGE | ≤+20dBu (A-Weighting) |
| CROSSOVER | Three types of high and low pass filters: Butterworth, Bessel and Link Witz-Riley |
| EQUALIZER | Parametric Equalizer: Frequency: 20 to 20kHz, Gain: -15 to +15dB, Bandwidth: 0.05 to 4. Graphic Equalizer: Frequency: 20～20kHz, Gain: -15～+15dB |
| MAXIMUM OUTPUT LEVEL | 20dBu |
| MAXIMUM INPUT LEVEL | 20dBu |
| WORKING VOLTAGE | AC 110V～220V, 50Hz/60Hz |
| MAXIMUM POWER | 20W |
| WORKING TEMPERATURE AND HUMIDITY | -10℃～50℃, 10%～90%RH, No condensation |
| CHASSIS | 1U |
| PRODUCT DIMENSION (L×W×H) | 486mm×208mm×44mm |
| NET WEIGHT | 2.7kg |
| PACKAGE DIMENSION (L×W×H) | 590mm×430mm×110mm |
| PACKAGE WEIGHT | 3.2Kg |