DCM 30 - Uncategorized QSC - Free user manual and instructions
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| Product Type | Professional Audio Power Amplifier |
| Channels | 2-channel stereo |
| Power Output | 300W per channel (8 ohms) |
| Frequency Response | 20 Hz – 20 kHz ±0.5 dB |
| Total Harmonic Distortion | < 0.05% |
| Signal-to-Noise Ratio | > 100 dB |
| Input Impedance | 10 kΩ (balanced) |
| Dimensions (W x H x D) | 482.6 x 88.1 x 300 mm (2U rackmount) |
| Weight | 10.0 kg |
| Power Supply | 100-240V AC, 50/60 Hz, 600 VA |
| Cooling | Variable speed fan, front-to-rear airflow |
| Protection Features | Thermal, short circuit, DC, overcurrent, and RF protection |
| Input Connectors | XLR and 1/4" TRS balanced |
| Output Connectors | Binding posts, SpeakON |
| Front Panel Controls | Input level knobs, power switch, status LEDs |
| Rear Panel Features | Ground lift switch, input sensitivity switch, parallel/dual mode switch |
| Operating Temperature | 0°C to 40°C |
| Storage Temperature | -20°C to 70°C |
| Certifications | CE, FCC Class B, RoHS |
| Intended Use | Live sound, installed sound, tour sound |
| Maintenance | Clean with dry cloth; avoid liquids; check fan filters monthly |
Frequently Asked Questions - DCM 30 QSC
What is the power output of the QSC DCM 30?
The QSC DCM 30 delivers 300W per channel into 8 ohms, with both channels driven.
Can I use this amplifier with 4 ohm speakers?
Yes, the DCM 30 is stable into 4 ohms, providing approximately 500W per channel.
How do I connect the amplifier to a mixing console?
Use balanced XLR or 1/4-inch TRS cables from the console's outputs to the amplifier's input connectors.
What protection features does the DCM 30 have?
It includes thermal, short circuit, DC, overcurrent, and RF protection to safeguard the amplifier and connected speakers.
What is the recommended rack space for installation?
The amplifier occupies 2 rack units (2U). Ensure adequate ventilation, especially if stacking multiple units.
How to clean the DCM 30?
Disconnect power and wipe the exterior with a soft, dry cloth. Do not use solvents or water. Vacuum fan intake grilles monthly.
What is the input sensitivity of the DCM 30?
The input sensitivity is switchable between 0.775V and 1.4V (or 26 dB and 32 dB gain) via a rear panel switch.
Can I bridge the amplifier for more power?
Yes, use bridge mode by setting the rear panel switch and connecting the speaker to the positive red binding posts. Output: approx. 1000W into 8 ohms.
What should I do if the amplifier overheats?
The amplifier will enter thermal protection. Ensure proper airflow (front-to-rear), clean fans, and allow cooling before resuming operation.
Is the DCM 30 compatible with 70V/100V systems?
No, the DCM 30 is a low-impedance amplifier designed for standard 4-16 ohm speakers. For distributed voltage systems, use a QSC CX or similar model.
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