D 10:4L - Receiver Lab Gruppen - Free user manual and instructions
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| Product Type | Professional 4-Channel Amplifier |
| Model | D 10:4L |
| Brand | Lab Gruppen |
| Dimensions (W x H x D) | 483 x 88 x 405 mm (19" x 3.5" x 15.9") |
| Weight | Approximately 12 kg (26.5 lbs) |
| Power Supply | 100–240 V AC, 50/60 Hz |
| Total Output Power | Up to 10,000 W (peak) |
| Channels | 4 independently configurable |
| Amplifier Class | Class D with regulated switch-mode power supply |
| DSP Processing | Built-in with presets and user-defined settings |
| Input Connectors | XLR balanced (2 inputs per channel) |
| Output Connectors | Speakon NL4 (1 per channel) |
| Cooling | Variable-speed fans, front-to-rear airflow |
| Protection Features | Short circuit, thermal, overvoltage, and DC protection |
| Remote Control | Via Ethernet (TCP/IP) and GPIO ports |
| Front Panel Indicators | Power, signal, limit, protect, and clip LEDs |
| Maintenance | Regular dust cleaning; no user-serviceable parts inside |
| Safety Certifications | CE, UL, ETL, RoHS |
| Spare Parts | Contact Lab Gruppen service for modules and fans |
| Repairability | Repair by authorized service centers only |
| Warranty | 5 years (limited) for professional use |
Frequently Asked Questions - D 10:4L Lab Gruppen
How do I connect my Lab Gruppen D 10:4L to speakers?
Use Speakon NL4 connectors on the output panel. Each channel has one NL4 output. Ensure the speaker cable is wired correctly (typically pins 1+ and 1- for a single channel).
Can I use the D 10:4L with 70V/100V distributed audio systems?
The D 10:4L is designed for low-impedance (2, 4, 8 ohm) operation only. For constant-voltage systems, use a dedicated line transformer or a Lab Gruppen amplifier with E Series options.
How do I set up the DSP presets?
Use the Lab Gruppen PLM Creator software or the front panel interface. Connect via Ethernet, launch the software, and select from factory presets or create custom EQ, crossover, delay, and limiter settings.
What is the total power output of the D 10:4L?
The amplifier delivers up to 10,000 W peak total across all channels. Continuous power depends on load: e.g., 4 x 2500 W at 4 ohms, 4 x 1250 W at 8 ohms.
How do I update the firmware?
Download the latest firmware from Lab Gruppen's official website. Connect the amplifier via Ethernet, use the PLM Creator software, and follow the update wizard. Do not power off during update.
Why is the 'Limit' LED flashing?
Flashing limit LED indicates the amplifier is approaching its maximum output. Check for clipping in the source signal or reduce the input level. Prolonged limiting may cause thermal shutdown.
Can I bridge channels to get more power?
Yes, channels 1 and 2 can be bridged, and similarly channels 3 and 4. Use Speakon NL4 with pins connected appropriately. Refer to the manual for bridged wiring configurations.
How do I clean the amplifier?
Disconnect from mains. Use a soft, dry cloth to wipe the exterior. For intakes, use a low-pressure air blower or vacuum to remove dust. Do not use liquids or solvents.
What should I do if the amplifier does not power on?
Check the power cord and AC mains. Ensure the power switch is on. If the red 'Protect' LED is lit, there may be a short circuit or overheating. Power off and check connections. Contact support if persists.
Is the D 10:4L rack-mountable?
Yes, it fits a standard 19-inch rack with 2U height. Use rack ears provided. Ensure adequate ventilation around the unit; do not block front or rear vents.
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USER MANUAL D 10:4L Lab Gruppen
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Product information
Brand : Lab Gruppen
Model : D 10:4L
Category : Receiver